Trick Flow GenX® 235 cathedral port cylinder heads are fully CNC-machined to significantly improve the performance of extreme street and race LSX engines. 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. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance. 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. Material was added at the rocker arm mounting points to increase high-rpm valvetrain stability. Trick Flow GenX 235 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. They are available fully assembled or as bare castings. Sold individually.

More From This Category

AFR Cylinder Head, BBF Large Chamber + .250 Exhaust Porters Castings

AFR Cylinder Head, BBF Large Chamber + .250 Exhaust Porters Castings

$3,695.85

AFR Cylinder Head, 12° LS3 Enforcer As Cast, 238cc Int Runner, 72cc Chamber, Bare

AFR Cylinder Head, 12° LS3 Enforcer As Cast, 238cc Int Runner, 72cc Chamber, Bare

$1,422.83

AFR Valve Spring, Solid Roller PAC Triple Spring 1.645 O.D. PAC. #1258, Set of 16

AFR Valve Spring, Solid Roller PAC Triple Spring 1.645 O.D. PAC. #1258, Set of 16

$1,183.26