Any gearhead worth his or her salt knows that whether it's a SOHC, DOHC, or OHV engine, the camshaft is considered the brain of a four-cycle internal combustion power plant. The camshaft's profile ...

It's no secret that adding duration and valve lift helps make power. But besides changing camshafts, there is another way to modify valve events-change the rocker-arm ratio. Ford V-8 rocker ratios-at ...

Beginning in the early '70s, it seems as if Pontiac history changed daily. For true hobbyists, the mid-to-late '70s are the most challenging to research since they were clouded by obscurity and ...

This factory photo depicts a GTA when new, loaded with features. Little did the buyers know how badly their cars would devalue after years of service, when none of them worked anymore. In a rush of ...