Big Block Chevy Mechanical Water Pump High Flow Aluminum Water Pump ---Clockwise (Standard) Rotation ---Short Water Pump (5.75" Tall) ---5/8" Pilot Diameter ---Finish: Black Powder Coated APPLICATION: ---396-427-454 Big Block Engines This mechanical water pump is designed for maximum cooling flow and comes with our Lifetime Warranty. Works with OEM or CVF Racing pulleys and brackets. See our E-Bay store for a complete selection of engine accessories.