1965-90 Chevrolet Big Block Accu-Drive® Gear Drive

The Accu-Drive® camshaft gear drive kit from Edelbrock replaces a stock timing chain with a precision gear drive system. The gear drive can be easily installed. Just replace the stock crank and camshaft sprockets with Accu-Drive® gears and slip in the idler assembly.

Most Accu-drives require no modifications to the engine block, although some fitting of the axles and front cover may be required. The Accu-Drive® gear system transmits power from the crankshaft gear to a full floating main idle r gear which drives the camshaft gear. 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.

Made in USA

Important: Not for use on stock Chevy hydraulic roller-lifter cam equipped engines. Accu-Drive® gears are not recommended for use above 7000 RPM or on computer controlled vehicles with knock sensors. On some late model small block engines, it will be necessary to check clearance behind the cam gear at the engine block at the 12 o'clock position. Make sure gear clears oil galley bosses on block when i n the most rearward position. Grind or machine block for clearance.