Product Summary

265, 267, 283, 302, 305, 307, 327, 350, 1 Groove Count

  • Precision machined aluminum construction for superior strength and durability
  • Lightweight versatile design, single groove for V-belt
  • For 1955-1968 Small Block Chevy short 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 #91015471
BrandSpeedway Motors

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Cast aluminum single groove V-belt upper pulley for 55-68 Small Block Chevy short 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 at fan hub to back side of pulley is 2-3/4"
  • From back edge of pulley to center of V-belt groove is 5/16"
  • Fits over a 5/8" water pump shaft (can be drilled to 3/4" if needed)
  • Diameter is 6-5/8"

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


CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #91015471
BrandSpeedway Motors
Overall Length3.00"
Outside Diameter6.60"
Mounted Length2.38"
Shaft Diameter.63"
Bolt Hole Pattern4 on 1.75
Groove Count1
Belt Width.38"
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. Center hole can be drilled to .75" if needed.
Water Pump StyleShort