Edelbrock Accu-Drive Camshaft Gear Drive (ED7891)

ED7891 - ACCU-DRIVE GEAR DRIVE, BB CHEV

Big Block Chevy, Accurate Timing Control - No Chain to Stretch

Part Number: ED7891

The Accu-Drive camshaft gear drive kit 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 drive system transmits power from the crankshaft gear to a full floating main idler 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, 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 precisionoperation. The set features hardened and ground idler pins from billet steel.
Accurate Timing Control - No Chain to Stretch
Smooth Cam Rotation for Precise Valve Timing
Provides Multiple Cam Timing Adjustments for Optimum Performance
Compatible with all Standard Camshafts
Important Note: Accu-Drive Gear Drives are not recommended for use above 7,000 rpm or on computer-controlled vehicles with knock sensors