It's no big revelation that high-lift rocker arms (those with a greater multiplication ratio than stock rocker arms) generally increase the performance of an engine without necessitating a camshaft ...

Overhead cams are a more efficient method of actuating the valves than with a pushrod, but someone in Detroit never got the memo. And thank goodness they didn't. With production pushrod mills turning ...

Have you ever noticed that some engines just seem to run better and make more power than others? Often, it can be attributed to what might be considered an insignificant detail. Take the lowly stamped ...