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 ...

The latest GM LS-style engines come stock with free-flowing, rectangular-port heads—they just need a great cam to wake them up. Enter Comp Cams' new LSR series. Available for both late-model one-bolt ...

This is not a modification for the faint of heart. Once you start taking a Four-Valve, four-cam modular small-block apart, you'll think that the parts will never go back together. Unless you want to ...

In today's world of touch-screens and digital technology, it's no surprise companies are constantly finding new ways to get the most performance from their products. It used to be a challenge to make ...