High Flow Polished Aluminum Short Water Pump for Big Block Chevy 396 427 454 BBC Fits big block Chevrolet ,Suitable for all street or racing applications. Brand new High Volume BBC short style water pump,maded in heavy duty ultra-light weight aluminum Welded 1 3/4" inlet port for lower hose. Billet body and impeller provide tight clearances for excellent flow characteristics. Impellers are machined to maximize volume and pressure,Pump will clear cam belt drives and most blower drives.