Moroso Crankshaft Pulley SBC & V6 #64110

Part #64110
Small Block Chevrolet and 90 Degree V6 Chevys, double groove, 1969-later (with long water pump), 50% reduction. 4.04" o.d.

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
Use 36 degree x 17/32" wide belt