An engine's valvesprings play a critical role in its performance, yet those incorrectly chosen for a given application can cause hobbyists to unknowingly point blame in another direction if an engine ...

Many gearheads buy their cylinder heads fully assembled and don't have to sweat making sure all of the various parts are set up correctly. But for those that build their own, or that just need to swap ...

Thump, thump went the exhaust pipes as the sizzling Three-Valve engine idled with intimidation. Fellow S197 owners looked on with envy as Justin Burcham of JPC Racing warmed up a customer's '06 ...