V Belt Pulley kit for Ford Small Block 289 & 302 engines (3 bolt crank). This kit will for result in underdrive pulley ratio of 88%. Designed for use with stock alternator and power steering brackets. Fits vehicles with factory 3 bolt fluid dampener and passenger side lower radiator hose. Dampener face to water pump flange face 3 7/8" Ford Pulley Kit Contents: Water Pump Pulley P/N SBFE2WP Grooves: 2 Pulley Diameter: 6.2" Pilot Diameter: 0.625" Crankshaft Pulley: P/N SBFE2CR Grooves: 2 Crank Pulley Diameter: 5.4" Crank Pulley Bolt Pattern: 3 Bolt Alternator Pulley: P/N SBF1ALT Diameter: 2.7" Alternator Shaft Diameter: 11/16"