Product Summary

Chevy Small Block V8, 6.60" Outside Diameter, Aluminum

  • Precision machined aluminum construction for superior strength and durability
  • Lightweight versatile design, single groove for V-belt
  • For 1969-1985 Small Block Chevy long style water pumps
  • Fits over a 5/8" water pump shaft (can be drilled to 3/4" if needed)
  • Diameter is 6-5/8"

Key Specs

MFG. Part #91015475
BrandSpeedway Motors

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Speedway Motors 91015475 Details

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

Item Details

Single Groove, 6-5/8" Diameter


Speedway Motors 91015475 Specifications

MFG. Part #91015475
BrandSpeedway Motors
Outside Diameter6.60"
Mounted Length1.96"
Shaft Diameter.63"
Bolt Hole Pattern4 on 2.15
Groove Count1
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