Billet Aluminum Big Block Ford Water Pump Pulley - V-Belt 2 Groove Water Pump Pulley for Ford Big Block 429 & 460 ("385" series) Engines. APPLICATION ---Ford Big Block "385" series engines ---1968 - 1987 Ford Passenger Cars and Trucks ---Does not fit Boss 429 FITS VEHICLES WITH: ---Factory 4 bolt dampener required ---1970 or newer water pump is required ---Dampener face to water pump flange face 3 1/16" Diameter: 5.9" Overall Length: 2.3" Grooves: 2 Bolt Pattern: 4 Bolt Bolt Circle: 1.75" Pilot Diameter: 5/8" & 3/4".
