PRW High Performance Aluminum Water Pump - Chev, Big Block Mark Iv, 1969-87 and Some 88-91 Hd Trucks W/Mark Iv Engines (Does Not Fit Corvette Or Trucks Over 1 Ton), Long-Style, 5/8" Pulley Pilot Shaft, 1, 75" Inlet Diameter, Water Pump, Block-To-Hub 7, 3125", As-Caststyle: Longpilot Size: 5/8"Shaft Od: 3/4"Block To Hub Height: 7, 3125"Rotation: Standardinlet Size: 1, 875"PRW'S High Flow Aluminum Water Pumps Are Engineered To Deliver An Increased Water Flow.
