Product Description
Trick Flow GenX 280cc LS3 Cylinder Heads
6-Bolt HIP Castings| 12 Degree | 67cc Chamber | 4.000"+ Bore
Sold as a Pair of 2 Assembled Heads
Building on the features that make the GenX® 255 for GM LS3 great—like 12° valve angles and relocated valves for reduced valve shrouding and improved piston-to-valve clearance—Trick Flow's GenX® 280 HIP cylinder heads withstand the abuse of high horsepower, power-adder performance demanded by today's racers and engine builders.
Trick Flow’s GenX® 280 heads list of features is long, and it starts with the HIP'd (Hot Isostatic Pressed) castings. This process significantly increases the casting's density for improved tensile and fatigue strength. It continues with industry leading airflow through CNC Competition Ported 280cc intake ports and Trick-Alloy™ powdered metal valve guides for added longevity. Manley Severe Duty intake valves and Extreme Duty Inconel exhaust valves are designed to withstand the abuse of extreme temperatures and stresses of big power adder applications. PAC Racing dual valve springs, titanium retainers, .750-inch thick deck, and 6-bolt-per-cylinder mounting pattern round out the features.
Trick Flow® GenX® 280 HIP cylinder heads for GM LS3 work with all LS3 intake manifolds and LS9/LSA blower assemblies and fit all LS head gasket and engine block combinations. These cylinder heads are available fully assembled.
Features:
- 280cc Intake Ports and 67cc Combustion Chambers
- HIP castings for higher tensile and fatigue strength
- Accepts 3/8" Pushrods
- Powdered Metal Valve Guides
- 2.165" NK-844 Severe Duty Stainless Steel Intake Valves
- 1.600" XH-432 Extreme Duty Inconel Exhaust Valves
- .750" Thick Deck
- 6 Bolt Configuration for use on Aftermarket or OEM Blocks
- Assembled Heads Include Trick Flow LS3 Rocker Stands
Overview:
- Combustion Chamber Volume: 67cc
- Intake Runner Volume: 280cc
- Exhaust Runner Volume: 87cc
- Cylinder Head Style: Assembled
- Cylinder Head Material: Aluminum
- Camshaft Style: Hydraulic Roller
- Intake Port Shape: Rectangular
- Intake Valve Diameter: 2.165"
- CNC-Machined Combustion Chamber: Yes
- CNC-Machined Intake Runner: Yes
- CNC-Machined Exhaust Runner: Yes
- Exhaust Port Shape: Oval
- Exhaust Valve Diameter: 1.600"
- Valve Springs Included: Dual Springs for Hydraulic Roller
- Maximum Valve Lift: 0.650"
- Outside Diameter of Outer Spring: 1.300"
- Retainer Material: Titanium
- Lock Style: 7 Degree Forged
- Valve Stem Seals Included: Yes
- Valve Guide Material: Powdered Metal
- Quantity: Sold as a Set of 2
Notes: Minimum bore diameter 4.000". Includes new rocker arm rail mounts for use with LS3 1.7 ratio rocker arms. OEM rocker arm rail mounts will not work with these heads.
