Cast aluminum single 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
- Single groove for V-belt
- From inside of pulley at fan hub to rear edge of pulley is 2"
- From rear edge of pulley to center of V-belt groove is 5/16"
- Center hole fits a 5/8" shaft (can be drilled out to 3/4" if needed)
- Diameter is 6-5/8"
Note: When using in conjunction with an electric fan assembly, be sure to consider the pulley installation screw kit # 910-15440 shown below.
Get the correct pulleys for your application by learning which water pump you have as explained in our tech article. SBC - Short vs Long Water Pump.
- 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)
Single Groove, 6-5/8" Diameter