Billet Aluminum Big Block Chevy V-Belt Water Pump Pulley - Short Water Pump (1V) 1 Groove water pump pulley for Big Block Chevy engines 396 427 454 SWP. Designed for use with stock power steering and alternator brackets. CHEVY 396 427 454 BIG BLOCK ENGINES WITH SHORT WATER PUMP ---1967 - 1972 Chevy Trucks & Cars ---1967 - 1974 Chevy Corvettes Diameter: 6.2" Overall Length: 2.85" Grooves: 1 Bolt Pattern: 4 Bolt Bolt Circle: 2.12" and 1.75" Pilot Diameter: 5/8".
