55-72 Small Block Single Groove Crankshaft Pulley without AC, (6-3/4" Diameter). Stamped 3755820-BC GM GM Group #: 0.659 GM Part #: 3755820
Important Warning Concerning Crankshaft Pulleys. Stock replacement pulleys are not designed to exceed 400 horsepower or 6,000 RPM. Using reproduction pulleys on engines in excess of these limits my result in catastrophic disintegration of the pulley causi
67-68 Camaro, 64-68 Chevy II, 64-68 Chevelle, 64-68 El Camino, 64-68 Chevy Fullsize, 6-67 Corvette, 67-72 Chevy Truck.