The crank gear (A) is exactly half the size of the cam gear (B). The cam turns only one revolution for every two revolutions of the crank. This is so the exhaust and intake valves will open and dose ...

Quite a few years ago, Iskenderian Racing Cams introduced a gear drive setup for small-block Chevy engines to replace the somewhat undependable chain drive system. The main drawback with Isky's ...

The most reliable means for changing shaft speed remains a mechanical variable-speed transmission. These drives are used to provide a variable output speed from a constant-speed power source (as in a ...