Product Description
Trick Flow GenX 225cc LS2 Cylinder Heads - 65cc Chamber
Fits 4.000"+ Bore Cathedral Port LS Engines LS2 LQ4 LQ9
Sold as a Pair of 2 Assembled Heads
Trick Flow GenX® 225 cathedral port cylinder heads for GM 6.0L LS2 engines are fully CNC-machined to significantly increase the performance of LS2, LQ4 and LQ9 powered cars and trucks. Trick Flow's engineers altered the valve angles from 15° to 13.5° to decrease valve shrouding, increase mid-lift airflow, and improve rocker arm-to-valve cover clearance. Material was added at the rocker arm mounting points to increase high-rpm valvetrain stability. The spark plugs were relocated in the CNC-profiled combustion chambers to enhance mid-lift airflow and increase the rigidity of the casting for extreme horsepower applications. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance.
Trick Flow GenX 225 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 6.0L engines. These fully assembled cylinder heads include dual .650" hydraulic roller valve springs, titanium retainers, forged steel valve locks, and valves. These 4-Bolt castings are designed for use with factory GM blocks.
Overview:
- Combustion Chamber Volume: 65cc
- Intake Runner Volume: 225cc
- Exhaust Runner Volume: 80cc
- Cylinder Head Style: Assembled
- Cylinder Head Material: Aluminum
- Camshaft Style: Hydraulic Roller
- Intake Port Shape: Cathedral
- CNC-Machined Combustion Chamber: Yes
- CNC-Machined Intake Runner: Yes
- CNC-Machined Exhaust Runner: Yes
- Exhaust Port Shape: Oval
- Intake Valves Included: Yes, 2.055" Diameter
- Exhaust Valves Included: Yes, 1.575" Diameter
- Valve Springs Included: Yes, 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
- Intake Valve Angle: 13.50
- Exhaust Valve Angle: 13.50
- Valve Guides Included: Yes
- Valve Guide Material: Bronze
- Valve Seat Material: Ductile Iron
- Quantity: Sold as a Set of 2 Assembled Heads
Notes: Roller Rocker Arms are highly recommended. Harland Sharp SLS17 rockers recommended per Trick Flow. For use on engines with a minimum bore diameter of 4.000".
