There's no doubt that the valvetrain is the most complex part of any racing engine. It's also pushed the hardest against some incredible stresses. Nextel Cup teams and some manufacturers are putting ...

Got a cam or valvetrain-related question? We want to hear it! Choosing the right cam and matching valvetrain parts are a key ingredient for wringing maximum power out of an internal combustion engine.

A camshaft can be a huge performance component for an engine-many people know this. Cam lobe design is often regarded as a black art. Many who have mastered it prefer it that way to keep people from ...