Moroso 64111 Moroso Chevrolet Small Block (w/Long Pump) Crankshaft Pulley - Double Groove - Billet Aluminum

Crankshaft Pulley, Billet, double groove, 50% reduction, SBC long water pump

• Fits: SBC and 90° V6 Chevs, 1969-later (with long water pump), 4.04" 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