Product Summary

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

  • Will work with 1955-1968 Chevy small block V8
  • Steel construction, chrome finish
  • 7-1/8" outside diameter
  • 4 x 1-3/4" bolt pattern
  • Sold individually

Key Specs

MFG. Part #91015421
BrandSpeedway Motors
Water Pump StyleShort

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Speedway Motors 91015421 Details

These upper pulleys for 1955-68 short water pumps feature a single groove with a beautiful chrome finish.  They will work with 283-350 V8 small block Chevy engines.  Sitting flat on the workbench, the pulley is 2-3/4" high in the center at the water pump.

  • Upper pulley
  • 1955-68 283-350 V8 small block Chevy engine
  • Short water pumps
  • Single groove  
  • 7-1/8" Diameter
  • Chrome plated finish

Note:  These upper pulleys will not work with our lower pulley (91015424).  Use our lower pulley (91015422) to correspond for proper alignment with these upper 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

Upper, 7-1/8" Diameter
Not compatible w/ pulley 910-15424

Speedway Motors 91015421 Specifications

MFG. Part #91015421
BrandSpeedway Motors
Water Pump StyleShort
Outside Diameter7.3"
Mounted Length2.72"
Shaft Diameter.63"
Bolt Hole Pattern4 on 1.75
Groove Count1
Belt Width.40"
Belt TypeV-Belt
Material TypeSteel
Sold in QuantityEach
NotesMounted length is from the face of the water pump pulley mount towards the front of the engine.