Details
Moroso 64050 Crankshaft Pulley, Fits Small Block Chevy Engines

Precision machined from high grade, lightweight aluminum castings
Extra-deep belt grooves provide added belt retention during rapid changes in engine RPM
Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower-robbing drag
High RPM water pump operation is improved, reducing impeller speed below cavitation threshold
Fit type: Universal Fit
Cast Aluminum Crankshaft Pulley; 68 Down SBC w/Short Water Pump; Use 36 Deg x W-0.53125 in. Belt; 5.25 in. OD; Single Groove;