Billet Aluminum Pulley Kit Small Block Chevy, Short Water Pump (SWP). Chevy V belt Pulley kit for Short Water Pump (SWP) engines. Will fit Chevy 350, 283, 302, 327, 305, and 400 engines. Designed for use with stock power steering bracket and alternator bracket. Note: Short water pump Chevy engines are 5.625" from face of water pump pulley to block. Made in the USA Chevy Pulley Kit Contents: P/N SBCS1WP Grooves: 1 Pulley Diameter: 6.4" Pilot Diameter: 0.625" P/N SBCS2CR Grooves: 2 Crank Pulley Diameter: 5.8" Crank Pulley Bolt Pattern: 3 Bolt P/N SBC1ALT Diameter: 2.7" Alternator Shaft Diameter: 11/16" Chevy Pulley Kit Contents: Water Pump Pulley P/N SBCL1WP Grooves: 1 Pulley Diameter: 6.6" Pilot Diameter: 0.625" Crankshaft Pulley: P/N SBCL2CR Grooves: 2 Crank Pulley Diameter: 6.6" Crank Pulley Bolt Pattern: 4 Bolt Alternator Pulley: P/N ALTPulley1 Diameter: 2.7" Alternator Shaft Diameter: 11/16"