This overlooked engine part controls everything, and most drivers never think about it.

Two cams with similar durations at 0.050-inch tappet lift can behave differently depending on the profiles' intake and exhaust opening and closing points. The characteristics of the same cam can also ...

If we were to ask for a show of hands, it’s a safe bet to assume many enthusiasts would reluctantly admit that camshaft theory is one of those topics that causes more than a little consternation. You ...

There are few things in an engine that are more critical to its behavior and performance than the camshaft. Sure, headers, a better manifold and carburetor can also contribute to improved driveability ...

Airflow in and out is what building horsepower is all about. Every month we attempt to deliver a killer airflow engine combination and uncover the mystery of a particular performance part. This month ...