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

Trick Flow Cylinder Head, PowerPort Cleveland 225, Comp Port, Assy, 72cc Chamber, 1.46" Sp, Ti Retain, For Ford 351C, Each

Trick Flow Cylinder Head, PowerPort Cleveland 225, Comp Port, Assy, 72cc Chamber, 1.46" Sp, Ti Retain, For Ford 351C, Each

$3,767.10

Trick Flow Cylinder Head, GenX 245, CNC Comp Port, Bare, 70cc CNC Chambers, 6-Bolt, GM LSX, Each

Trick Flow Cylinder Head, GenX 245, CNC Comp Port, Bare, 70cc CNC Chambers, 6-Bolt, GM LSX, Each

$3,129.10