Every four-stroke engine has at least two valves per cylinder, so its time you make those valves do your bidding. A new camshaft will unlock power you never thought possible, so let’s learn the basics ...

Since a Pontiac V-8 is a pushrod engine (instead of being an overhead cam design), it afforded us the opportunity to explore a different rocker-arm ratio and determine its impact on power. As built, ...

While race-car performance is the goal of a large cross-section of enthusiasts, the key to completing a very powerful "Cam-Only" LS1 build is a delicate balance of both parts and tuning talent. As ...

"Streetability" be damned-this is an all out, big boy camshaft test for the diehard LS1 crowd. Our rules were simple: If it fits in a stock LS1 and you keep it on the shelf, we want to test it. Can it ...

From classic V8s to modern turbocharged EcoBoosts, smart tuning and the right upgrades can completely change how your car feels on the road. Cold air intakes, camshaft swaps, and ECU remaps are just a ...