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Oldsmobile
1/2″-20 x 2 1/2″ Grade 8 Fully Threaded Bolts
Additional gear ratio for ProCharger RaceDrive (integrated gear drive and supercharger combo)
875″ – A1041
Part Number: D1545
Chevrolet Big Block F-3 CrankDrive 481X F-3 OldsmobileCrankDrive (External Gear Drive) The ProCharger CrankDriveTM positions the supercharger higher than other gear drives to allow for better steering component and frame clearance Lightweight design Easy to assemble, disassemble, and swap gear ratios Complete assembly for specific engines, no sourcing additional components Optional alternator drive (SEE FOOTNOTES) Optional fuel pump drive Allows engine to rotate both directions for servicing Optional