When checking a modification, it is imperative that the test procedure remains constant. The most common component, the cylinder head, is wide open to testing mistakes.

One of the big three, cylinder heads are a critical ingredient in any performance build. Working with the cam profile and intake manifold, the cylinder heads he ...

Dyno-testing cylinder heads and a cam upgrade on a 5.0L pushrod engine.

Read the tech article on Making Sense of Cylinder Head Flow Testing, brought to you by the experts at High Performance Pontiac Magazine.