Description:Fits All Bb Chevy Engines When Using A Short Water Pump Fits BB Chevy 396 427 454 472 502 Using A Short Water PumpPulley Diameter Is 6 7/16"Pulley is 1 1/2" TallBolt Pattern is 2 3/4" Center Hole is 1 1/8"Machined from Polished Billet Aluminum
