Allstar Performance ALL31030 4-3/4" 2 Groove Crank Pulley

Product description

• pulleys work with power steering pump and pulley to provide a ratio within the GM specified RPM range
• Specifically for short or Corvette water pumps
• 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