Edelbrock 7890 Accu-Drive gear drive.
Fits Chevy 283, 327, 350, 400 and 383 stroker engines.
Replace a stock timing chain with a precision gear drive system.
Easily installed, just replace the stock crank and camshaft sprockets with the Accu-Drive gears and slip in the idler assembly.
A unique feature of the Edelbrock Accu-Drive system is the ability of the main idler gear to float to an optimum position between the crankshaft and camshaft gears, assuring absolutely equal load sharing between the crankshaft and the camshaft gears.
The gears are made from billet SAE-1144 steel with induction hardened teeth.
Gear teeth are shaved for precision operation.
The set features hardened and ground idler pins from billet steel.
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