Product Description
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 builds with displacements up to 427 cubic inches. Capable of flowing 328 CFM at 0.650" lift on a 4.000" bore. Fully CNC-ported and constructed with high-quality components, these heads deliver exceptional airflow and combustion efficiency, making them ideal for racing applications as well as high performance street builds.
Included Components:
- 100% CNC Ported 72cc Combustion Chambers
- 100% CNC Ported Intake (230cc) & Exhaust (86cc) Ports
- Competition 5-angle Valve Job
- 8mm Bead Lock Intake Valve, 2.080" Diameter x 4.900" Overall Valve Length
- 8mm Bead Lock Exhaust Valve, 1.600" Diameter x 4.900" Overall Valve Length
- PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650” maximum lift
- 7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D
- 7° Bead Lock Valve Keepers
- Viton Valve Seals .600" O.D x .495" I.D
- Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D
- Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep
- Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep
- 8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L
Specifications & Features:
- Material: A356 Aluminum
- Intake Port Volume: 230cc
- Intake Port Dimension: 3.250"H x 1.115"W x5/16 top 3/8 bottom
- Intake Port Location: Stock
- Exhaust Port Volume: 86cc
- Exhaust Port Dimension: 1.385" H x 1.695" W
- Exhaust Port Location: Stock
- Combustion Chamber Size: 72cc
- Valve Cover Bolt Pattern: Center Bolt
- Valve Angle: 15°
- Valve Spring Pocket Diameter: 1.510" O.D
- Max Valve Spring Pocket Machining: 1.525" O.D
- Deck Thickness: .750"
- Minimum Bore Diameter: 3.900"
- Spark Plugs: Accepts 14mm x .750" Gasket Seat, or 14mm x .708" Reach Taper Seat Plugs
Heads Sold/Priced as a pair.
