Cast aluminum double groove V-belt upper pulley for '69-'85 Small Block Chevy long style water pumps. Fits over 5/8" water pump snout, but can be drilled out to 3/4" if needed.
- Precision machined aluminum construction
- Lightweight and strong
- Two grooves for V-belts
- Hub surface to first groove center: 2.415"
- Center-to-center of grooves: 11/16"
- Center hole fits a 5/8" shaft (can be drilled out to 3/4" if needed)
- Diameter: 6-5/8"
It may be necessary to shim either or both of the pulleys to achieve perfect belt alignment. There are variances between manufacturers of both water pumps and pulleys.
Water Pump ID Chart (GIF)