Allstar Performance ALL31040 6.625" x 5/8" Water Pump Pulley - High Performance Replacement for Chevy, Ford & Mopar Engines - Perfect for Racing, Hot Rods & Engine Upgrades

Specifically for short or Corvette water pumps, pulleys work with power steering pump and pulley to provide a ratio within the GM specified RPM range. Race engine RPM differs greatly from street engines. For 30% less water pump speed and reduced weight and inertia, the crankshaft and water pump pulleys are smaller in diameter than standard reduction pulleys. Acceleration capabilities are greatly enhanced.

2 Groove V-Belt

6.625 in Diameter

Short Water Pump

Small Block Chevy