Billet Aluminum Pulley Kit for Long Water Pump (LWP) engines. Will fit Chevy 350, 283, 302, 327, 305, and 400 engines. Designed for use with stock power steering bracket and alternator bracket. Note: Long water pump Chevy engines are 7.287" from face of water pump pulley to block. Chevy Pulley Kit Contents: Water Pump Pulley P/N SBCL2WP Grooves: 2 Pulley Diameter: 6.6" Pilot Diameter: 0.625" Crankshaft Pulley: P/N SBCL3CR Grooves: 3 Crank Pulley Diameter: 5.4" Crank Pulley Bolt Pattern: 3 Bolt Alternator Pulley: P/N ALTPulley1 Diameter: 2.7" Alternator Shaft Diameter: 11/16"