Moroso 64201 Moroso Chevrolet Big Block (w/Short Pump) Crankshaft Pulley - Single Groove - Billet Aluminum

Crankshaft Pulley, Billet. single groove, 30% reduction, BBC short water pump

• Fits: BBC, 1968-earlier (with short water pump), 5.25" O.D.
• CNC Machined from billet aluminum with hard-coat anodized finish
• Deep precision machined grooves ensure belt retention even during extreme changes in engine RPM
• When crankshaft and water pump pulleys are used together, water pump speed is reduced by approximately 30%
• Uses 36° x 17/32" wide belt