Product Summary

Chevy Small Block V8, 6.60" Outside Diameter, Aluminum

  • S/B Chevy, double-groove pulleys, 20% reduction
  • Available for long or short water pumps
  • 5/8" centering hole

Key Specs

MFG. Part #91015476
BrandSpeedway Motors

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Speedway Motors 91015476 Details

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.

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.

Item Details

Double Groove, 6-5/8" Diameter

Speedway Motors 91015476 Specifications

MFG. Part #91015476
BrandSpeedway Motors
Outside Diameter6.60"
Mounted Length2.69"
Shaft Diameter.63"
Bolt Hole Pattern2.13
Groove Count2
Belt Width.42"
Belt TypeV-Belt
Material TypeAluminum
Sold in QuantityEach
NotesMounted length is from the face of the water pump pulley mount towards the front of the engine.
Water Pump StyleLong