Automotive engine valves also, known as check valves, are utilized for air injection in vehicles as part of emission control and exhaust gas recirculation systems. Engine valves are employed in a wide ...

From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...

In the pre-LS era, a typical small-block-powered street car would rev willingly to around 5,000 rpm. You could assemble a cam package for it—even using heavy components—and you probably wouldn't have ...