SMALL BLOCK CHEVY CHROME SHORT WATER PUMP PULLEY KIT 2/3 GROOVE
Steel chromed finish crank and water pump pulleys set. These are for 1955-68 small block Chevy engine with short water pump.
Chevy small block short water pump pulley is a double groove chrome steel water pump pulley. with Diameter: 6.40". Bolt Circle: 1.75". Depth: 2.875".
Chevy small block crank pulley is a triple groove chrome steel crankshaft pulley for short water pumps. with Diameter: 7.30". Bolt Circle: 1.75". Depth: 1.375".
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.