Shaft-mounted rocker arms are usually reserved for the high-stress environment of an all-out racing engine-whether it's for drag racing or some other competitive motorsport. Most of us late-model ...

That's not to say we all don't want to tear a motor down and start from scratch with all of the latest goodies. However, a perfectly viable alternative can be had, with a relatively simple yet ...

An engine that just doesn't perform as it should at high speed on the dyno or racetrack can induce a series of checks that usually first includes measuring the pressure and volume of the fuel being ...

Face it: Real engines have roller cams (and we're not talking about factory hydraulic rollers). If you think your flat-tappet mill can make some ponies, then you're in for a real surprise. Cost is ...

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 ...