Small Block Chevy Chrome Steel Water Pump Upper Pulley. Fits Small Block Chevy 283-350 Engine. Fits 1969-85 Long Water Pump.
6.30" Diameter with 2.30" Bolt Circle. Will not fit Corvette water pumps or early stock GM trucks. This pulley is a must if your NOT using A/C. To determine if your water pump is short or long. If your alternator is originally on the driver's side then it is a short water pump.If your alternator is orginally on the passenger's side then it is a long waterpump. If you can fit your hand between the waterpump and the timing chain cover then you have a long waterpump.