On the left is the gear-drive cam and its distributor drive gear, while the pair on the right are for conventional chain drive. Notice the different helix angle of the gears. See All 3 Photos Shown ...
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 ...
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