Product Description
Trick Flow 220cc "Fast As Cast" LS1 Cylinder Heads - 64cc Chamber
Fits 3.900"+ Bore Cathedral Port LS Engines LS1 LS6 LS2 LQ4 LQ9
Sold as a Pair of 2 Assembled Heads
Trick Flow GenX® 220 cylinder heads for GM 5.7L LS1 engines are the best value in GM LS performance. These cathedral port heads incorporate features of Trick Flow's fully CNC-ported LS heads such as 13.5° valve angles, decreased valve shrouding, increased mid-lift airflow, relocated spark plugs, CNC-profiled combustion chambers with port-to-valve seat blending (bowl blending), improved rocker arm-to-valve cover clearance, and rigid casting design in a more affordable "Fast As Cast" version that flows nearly as much as Trick Flow's competition ported heads. The special Fast As Cast runner design duplicates the port shape and profile of fully CNC-ported runners, resulting in near-CNC-ported performance for the same price as regular cast cylinder heads.
Trick Flow GenX 220 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 5.7L and 6.0L engines. These fully assembled cylinder heads include valve springs, titanium retainers, forged steel valve locks, and valves.
Overview:
- Combustion Chamber Volume: 64cc
- Intake Runner Volume: 220cc
- Exhaust Runner Volume: 80cc
- Cylinder Head Style: Assembled
- Cylinder Head Material: Cast Aluminum
- Camshaft Style: Hydraulic Roller
- Intake Port Shape: Cathedral
- CNC-Machined Combustion Chamber: Yes
- CNC-Machined Intake Runner: No
- CNC-Machined Exhaust Runner: No
- Intake Valves Included: 2.040" Diameter
- Exhaust Valves Included: 1.570" Diameter
- Valve Springs Included: Dual Hydraulic Roller Springs
- Maximum Valve Lift: 0.650"
- Outside Diameter of Outer Spring: 1.300"
- Retainer Material: Titanium
- Lock Style: 7Degree Forged
- Valve Stem Seals Included: Yes
- Intake Valve Angle: 13.50
- Exhaust Valve Angle: 13.50
- Valve Guide Material: Bronze
- 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 3.900".
