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Garage Sale - Small Block Chevy Case Aluminum Short Pump Double Groove Upper Pulley

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Garage Sale:
Yes
Garage Sale - Small Block Chevy Case Aluminum Short Pump Double Groove Upper PulleyGarage Sale - Small Block Chevy Case Aluminum Short Pump Double Groove Upper PulleyGarage Sale - Small Block Chevy Case Aluminum Short Pump Double Groove Upper Pulley
Garage Sale - Small Block Chevy Case Aluminum Short Pump Double Groove Upper Pulley

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Garage Sale - Small Block Chevy Case Aluminum Short Pump Double Groove Upper Pulley

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What's in the Box

Speedway Billet Aluminum double groove pulleys for Small Block Chevy feature a 30% reduction. Reduction pulleys have a smaller diameter which slows the speed of your fan, water pump, and alternator to reduce drag for more top-end horsepower. Plus, high RPM water pump operation is improved due to reduced fluid cavitation.

  • High strength billet aluminum construction
  • Superior belt retention with extra-deep grooves
  • 30% reduction slows accessories down for less drag
  • Adds top-end horsepower
  • Reduces water pump impeller speed below cavitation threshold
  • Improved high-RPM cooling capabilities

Fits a 5/8" shaft.

 

This item is garage sale priced because it's old stock. 

 

**NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS** 

Item Details

Short or Long Upper, 30% Double Groove

You may also be interested in:

Universal Water Pump Shim Kit
                        

Water pump pulley shim kit provides proper drive belt alignment with pulleys.  Kit contains two aluminum 1/16" spacer and one 1/8" spacer.

Learn more about using different water pump accessories to best fit your application by reading our tech article.  SBC - Short vs Long Water Pump

Aluminum Lower Pulley Spacer
                        Spaces lower pulley out to match with the upper pulleys. Each spacer is .090" thick aluminum.
                    
Small Block Chevy Cast Alum. Short Pump Double Groove Pulley
                        

Speedway Cast Aluminum double groove pulleys for Small Block Chevy feature a 20% reduction. Reduction pulleys have a smaller diameter which slows the speed of your fan, water pump, and alternator to reduce drag for more top-end horsepower. Plus, high RPM water pump operation is improved due to reduced fluid cavitation.

  • Machined from lightweight cast aluminum
  • Superior belt retention with extra-deep grooves
  • 20% reduction slows accessories down for less drag
  • Adds top-end horsepower
  • Reduces water pump impeller speed below cavitation threshold
  • Improved high-RPM cooling capabilities
  • 910-15482
    • 6-5/8" O.D.

Available for Short style pumps ('55-'68). Fits a 5/8" shaft.

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.  

Aluminum Lower Pulley Screw Kit, Fine Thread
                        

Set of three Allen bolts for lower aluminum water pump pulley.

  • Fine Thread
Speedway Reduction Pulley Combo for Small Block Chevy Short Pump
                        

Kit includes a cast aluminum double groove cast aluminum water pump pulley, crank pulley, and a matched pair of heavy duty belts. Slows water pump speed by 20% for increased horsepower.

  • Upper Pulley Grooves:  Two
  • Lower Pulley Grooves:  Two 
  • Upper Pulley Diameter:  6-5/8" O.D.
  • Lower Pulley Diameter:  5-7/16" O.D.
  • Upper Pulley Snout Hole:  5/8" O.D. (can be drilled out to 3/4")

Fits Small Block Chevy V8 with '55-'68 short-style water pump with 5/8" shaft.

Note: The lower crank pulleys in our combo kits are manufactured thicker than normal stock pulleys.  This requires longer 3/8" bolts to be purchased separately.  Allen head type bolts recommended. 

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.

 

Small Block Chevy Billet Aluminum Water Pump Pulley, 6-7/8 Inch O.D.
                        

Speedway Billet Aluminum double groove pulleys for small block Chevy feature a 30% reduction. Reduction pulleys have a smaller diameter which slows the speed of your fan, water pump, and alternator to reduce drag for more top-end horsepower. Plus, high RPM water pump operation is improved due to reduced fluid cavitation.

  • High strength billet aluminum construction
  • Superior belt retention with extra-deep grooves
  • 30% reduction slows accessories down for less drag
  • Adds top-end horsepower
  • Reduces water pump impeller speed below cavitation threshold
  • Improved high-RPM cooling capabilities

Fits short style pumps ('55-'68) or long style pumps ('69-'86). Fits a 5/8" shaft.

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.