Product Description
Trick Flow GenX 205cc LS Cylinder Heads - 58cc Chamber
Fits 3.780"+ Bore Cathedral Port LS Engines 4.8L 5.3L 5.7L
Sold as a Pair of 2 Assembled Heads
These Trick Flow GenX® 205 cathedral port cylinder heads for GM 4.8L 5.3L and 5.7L LS engines are fully CNC-machined to significantly increase the performance of GM cars and trucks. Trick Flow 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 205 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 4.8L, 5.3L, 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: 58cc
- Intake Runner Volume: 205cc
- 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: Yes
- CNC-Machined Exhaust Runner: Yes
- Exhaust Port Shape: Oval
- Intake Valves Included: 2.000" Diameter
- Exhaust Valves Included: 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 Guide Material: Powdered Metal
- Valve Seat Material: Ductile Iron
- Quantity: Sold as a Set of 2 Assembled Heads
