New head trick flow is getting ready to release.

Trick Flow GenX™ Street Cylinder Heads for GM LSX

AKRON, OH—More and more GM enthusiasts are turning to 4.8L and 5.3L iron block versions of General Motors' LS engine to power their kit cars, hot rods, musclecars, street machines, and sport trucks. And Trick Flow Specialties is ready to help these enthusiasts build serious street power with its new GenX™ Street Cylinder Heads for GM LSX engines.

Starting with the track-proven GenX Street/Strip LS head design, Trick Flow engineers refined the combustion chambers to retain the stock compression ratio and work with the smaller bore diameters of the 4.8L, 5.3L, and 5.7L engines. They also modified the chambers to unshroud the valves and increase airflow and swirl.

The GenX Street heads will be available in three versions:

Option One features standard cast chambers and Fast As Cast™ ports that precisely duplicate the port shape and profile of fully CNC-ported heads, and valve seat-to-port bowl blending for better transition from the chambers to the ports.
Option Two combines the Fast As Cast runners with fully CNC-profiled combustion chambers and bowl blending for improved airflow.
Option Three features fully CNC-machined and bowl-blended chambers and CNC-ported runners for maximum airflow.
In any configuration, GenX Street cylinder heads outflow and outperform factory LS6 heads. GenX Street heads are fully assembled and ready to bolt on right out of the box. The components include lightweight stainless steel 2.000" intake/1.575" exhaust valves, high lift valve springs, chromemoly steel retainers, ductile iron valve seats, and special Trick-Alloy powdered metal valve guides. In addition, these heads retain the use of all stock sensors and fittings and can accommodate aftermarket roller rocker arms. Bare cylinder head castings are also available.

Based in Akron, Ohio, Trick Flow Specialties offers products that provide "Ultimate Bolt-On Performance." Trick Flow's product lines include cylinder heads, intake manifolds, camshafts, valvetrain components, and more.