Billet Aluminum Water Pump Pulley for Long Water Pump (LWP) engines. Will fit Chevy 396-427-454 engines. Designed for use with stock power steering bracket and alternator bracket. Note: Long water pump Chevy engines are 7.29" from face of water pump pulley to block. Pulley Kit Contents: Water Pump Pulley BBCL1WP Grooves: 1 Diameter: 6.2" Overall Length: 2.15"