Edelbrock 7891 Accu-Drive Gear Drive Big-Block Chevy

Description

Edelbrock part #7891 Accu-Drive camshaft gear drive kit for big-block Chevy engines replaces a stock timing chain with a precision gear drive system utilizing a compound gear drive train. 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. This Accu-Drive camshaft gear drive kit for big-block Chevy engines 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 precision operation. The set features hardened and ground idler pins from billet steel and are compatible with all standard camshafts. Features Include: – Accurate timing control..No chain to stretch – Provides multiple cam timing adjustments for optimum performance – Smooth cam rotation for precise valve timing

Features

• Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.
• Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.

Specifications

Vehicle Fitment

1965-1972 Chevrolet Biscayne; 1965-1975 Chevrolet Bel Air; 1965-1976 Chevrolet Impala; 1966-1973 Chevrolet Chevelle; 1966-1974 Chevrolet Corvette; 1966-1975 Chevrolet El Camino; 1966-1976 Chevrolet Caprice; 1967-1972 Chevrolet Camaro; 1968-1968 Chevrolet Chevy II; 1968-1969 GMC K15/K1500 Pickup; 1968-1972 Chevrolet K10 Suburban; 1968-1974 Chevrolet C10 Pickup; 1968-1974 Chevrolet C20 Pickup; 1968-1974 Chevrolet C30 Pickup; 1968-1974 Chevrolet K10 Pickup; 1968-1974 Chevrolet K20 Pickup; 1968-1974 Chevrolet K30 Pickup; 1968-1974 GMC C15/C1500 Pickup; 1968-1974 GMC C15/C1500 Suburban; 1968-1974 GMC C25/C2500 Pickup; 1968-1974 GMC C25/C2500 Suburban; 1968-1974 GMC C35/C3500 Pickup; 1968-1974 GMC K15/K1500 Suburban; 1968-1974 GMC K25/K2500 Pickup; 1968-1974 GMC K25/K2500 Suburban; 1968-1974 GMC K35/K3500 Pickup; 1968-1980 Chevrolet C10 Suburban; 1968-1986 Chevrolet C20 Suburban; 1969-1970 Chevrolet Nova; 1970-1972 Chevrolet Kingswood; 1970-1972 Chevrolet Townsman; 1970-1975 Chevrolet Monte Carlo; 1971-1975 GMC Sprint; 1972-1972 Chevrolet Brookwood; 1973-1973 Chevrolet Blazer; 1973-1974 Chevrolet G10 Van; 1973-1974 Chevrolet G20 Van; 1973-1974 Chevrolet G30 Van; 1973-1976 GMC Jimmy; 1973-1985 Chevrolet K20 Suburban; 1975-1976 Chevrolet G30; 1975-1976 GMC G25; 1975-1978 GMC C15; 1975-1978 GMC C15 Suburban; 1975-1978 GMC C25; 1975-1978 GMC C25 Suburban; 1975-1978 GMC C35; 1975-1980 Chevrolet C10; 1975-1986 Chevrolet C20; 1975-1986 Chevrolet C30; 1976-1976 Chevrolet G20; and more – see compatibility chart

Installation Instructions (PDF)