Edelbrock 7890 Accu-Drive Gear Drive Kit Small Block Chevy

The Edelbrock 7890 Accu-Drive gear drive kit replaces the stock timing chain on small-block Chevy engines with a precision gear drive system for accurate timing control and improved performance. Unlike traditional timing chains that stretch over time, this gear drive system provides consistent, reliable valve timing throughout the engine's life.

Key Features:

• Compound gear drive train with full-floating main idler gear design
• Billet SAE-1144 steel gears with induction-hardened, precision-shaved teeth
• Hardened and ground idler pins machined from billet steel
• Multiple cam timing adjustments for optimum performance tuning
• Unique floating idler design ensures equal load sharing between crankshaft and camshaft gears
• Compatible with all standard small-block Chevy camshafts
• No chain stretch or tension issues

Installation:

Installation is straightforward—simply replace the stock crank and camshaft sprockets with the Accu-Drive gears and install the idler assembly. Most applications require no engine block modifications, though some fitting of the axles and front cover may be necessary depending on your specific engine configuration.

The Accu-Drive system transmits power from the crankshaft gear through the floating main idler to the camshaft gear, providing smooth cam rotation and precise valve timing for enhanced engine performance and reliability.