Quick view Details AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) MSRP: Now: $3,490.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) MSRP: Now: $3,333.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) MSRP: Now: $3,555.00 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare
Quick view Details PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 MSRP: Now: $3,083.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare
Quick view Details Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 MSRP: Now: $119.95 Add to Cart Compare Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 MSRP: Now: $59.99 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view AFR AFR 12° LS3 Rectangle Port 6-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 6-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view AFR AFR 12° LS3 Rectangle Port 4-Bolt Mongoose 260cc Cylinder Heads – Fully CNC Ported, 69cc Chambers, Assembled (Pair) AFR 12° LS3 4-Bolt Cylinder Heads 260cc – Fully CNC Ported, 69cc Chambers, Assembled (Pair) In Stock, Ready to Ship! AFR's 260cc LS3 Mongoose cylinder heads feature 100% CNC ported intake runners, exhaust runners, and combustion chambers... MSRP: Now: $3,490.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 65cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 65cc Chambers, 3.900"=+ Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or... MSRP: Now: $3,333.00 Add to Cart Compare Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view AFR AFR 15° LS Cathedral Port 4-Bolt Mongoose 230cc Cylinder Heads - Fully CNC Ported, 72cc Chambers, 3.900"+ Bore, Assembled (Pair) AFR 15° LS Cathedral Port 4-Bolt Cylinder Heads 230cc – Fully CNC Ported, 72cc Chambers, Big Bore, Assembled (Pair) In Stock, Ready to Ship! AFR's 230cc LS1 Mongoose cylinder heads are recommended for aggressive street or street/strip... MSRP: Now: $3,333.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster M115 235cc Cathedral Port Cylinder Heads (SET) 4.8L 5.3L 5.7L 6.0L LS1 LS2 LS6 LQ4 LQ9 LM7 LC9 L33 LH6 Frankenstein M115 Monster Series Cathedral Port LS1 Cylinder Head Pair Fits 3.780" and Larger Bore LS Engines when used with 4.030" or larger Head Gaskets In Stock, Ready to Ship! The Monster Series M115 235cc LS1 Cylinder Heads are engineered for... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M712 283cc 12 Degree LS7 Cylinder Heads (SET) Frankenstein Monster M712 283cc LS7 12 Degree Cylinder Head Pair Fits 4.100" and Larger Bore LS Engines when used with a Square Port (LS7) Style Intake Manifold In Stock, Ready to Ship! The Monster Series M712 283cc LS7 Cylinder Heads are engineered... MSRP: Now: $3,555.00 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare Quick view PRC Precision Race Components Texas Speed PRC Gen V LT1 CNC Ported 312cc Cylinder Heads 6.2L L86 L87 PRC LT1 Aftermarket Casting 312cc CNC Cylinder Heads Fits 2014-Newer Gen V LT-Based 6.2L Engines LT1 L86 L87 (Not for LT4) Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! These 100%... MSRP: Now: $3,083.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
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Quick view Frankenstein Engine Dynamics Frankenstein Monster Series M311 273cc 11 Degree LS3 Cylinder Heads (SET) Frankenstein M311 Monster Series 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock, Ready To Ship! The Monster Series M311 273cc LS3 Cylinder Heads are... MSRP: Was: Now: $3,333.00 - $3,478.00 Choose Options Compare
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Quick view Frankenstein Engine Dynamics Frankenstein M311 273cc Boost Monster 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold In Stock Ready to Ship Frankenstein Engine Dynamics' Boost Monster Series... MSRP: Was: Now: $3,999.00 - $4,144.00 Choose Options Compare
Quick view Bluegrass Performance Valve Spring Compressor Tool L82 L83 L84 L86 L87 L8T LT1 LT2 LT4 Gen V Gen 5 Chevy Engine 5.3 6.2 Valve spring Compressor Tool L83 L86 Gen V Gen 5 Chevy LT1 LT4 Engine 5.3 6.2 Bluegrass Performance Part BPPLT1 This quality tool is a must have when changing springs on the new Gen 5 motors. Gen V 5.3 6.2 L83 L86 L82 L84 L87... MSRP: Now: $119.95 Add to Cart Compare Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected
Quick view Bluegrass Performance LS Valve Spring Compressor Tool LS1 LS2 LS3 LQ4 4.8 5.3 5.7 6.0 6.2 LS Valve Spring Compressor Bluegrass Performance Part BPPDVST Exclusive new valve spring removal tool engineered specifically to work with all GM Gen III/IV LS-type engines (excluding LS7). The easy-to-use custom design enables the... MSRP: Now: $59.99 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected
