Our mechanic takes us through the cylinder head and valve train and continues his explanation of how engines really work. The Mechanic is the kind of chap who eat, sleeps and breathes engineering.

Thunder Power's 4-valve cylinder head conversion for big-block Chevys bolts right onto production iron or aftermarket aluminum cylinder blocks. The heads even have the necessary bosses to add an extra ...

Ask any professional racer or engine builder and you'll hear that cylinder-head airflow is the most important factor in achieving the greatest peak horsepower from any engine. For years Pontiac racers ...

We're all familiar with the role injectors and turbochargers play in increasing a diesel engine's horsepower. However, when camshafts and cylinder heads are thrown in the mix, the familiarity isn't ...