High-Flow Aluminum Water Pump: Features a 5/8-inch fan snout, extra-thick fan hub, precision impeller, and equal flow to both cylinder banks for reliable cooling performance., Durable CNC-Machined Construction: Built from state-of-the-art aluminum castings with 3/4-inch ultra-duty bearings and an adjustable cam stop for long-lasting strength., Complete Pulley Combo Included: Comes with a cast aluminum double-groove water pump pulley, double-groove crank pulley, and a matched pair of heavy-duty V-belts., 1:1 Speed Ratio for Efficiency: Pulley system maintains a 1:1 water pump-to-crankshaft ratio to maximize cooling while minimizing horsepower loss in racing applications., Fits Short-Style SBC Pumps: Designed for 1955–1968 Small Block Chevy engines using short-style water pumps with either a.
