B000CNATTW Edelbrock 7890 Accu-Drive Gear Drive

The Edelbrock Accu-Drive Camshaft Gear Drive Kit replaces a stock timing chain with a precision gear drive system. The gear drive can be easily installed by replacing the stock crank and camshaft sprockets with Accu-Drive gears and slipping in the idler assembly. The Accu-Drive gear drive system transmits power from the crankshaft gear to a full floating main idler which drives the camshaft gear. They provide up to eight degrees of cam-timing adjustment in two-degree increments and have offset bushings for easy cam indexing, as well as SAE 8620 steel gears that will operate at higher RPMs. The Accu-Drive Gear Drives are not recommended for use above 7, 000 RPM or on computer-controlled vehicles with knock sensors.
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Replaces a stock timing chain with a precision gear drive system, can be installed easily
Transmits power from the crankshaft gear to a full floating main idler which drives the camshaft gear
Unique feature is the ability of the main idler gear to float to an optimum position between the crankshaft and camshaft gears
Provides up to eight degrees of cam-timing adjustment in two-degree increments
Requires no modifications to the engine block