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Speedway 1:1 Pulley Combo, Small Block Chevy Short Pump

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Specs
Material Type:
Aluminum
Sold in Quantity:
Set
Finish:
Natural
Shaft Diameter:
.75
Overall Diameter:
5.50
Belt Width:
.38
Groove Count:
2
Bushing Length:
.38
Bushing Diameter:
.63
Notes
Includes bushing to mount on 3/4" or 5/8" pump.
Speedway 1:1 Pulley Combo, Small Block Chevy Short PumpSpeedway 1:1 Pulley Combo, Small Block Chevy Short PumpSpeedway 1:1 Pulley Combo, Small Block Chevy Short Pump
Speedway 1:1 Pulley Combo, Small Block Chevy Short Pump

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Speedway 1:1 Pulley Combo, Small Block Chevy Short Pump

Details

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What's in the Box

Kit includes a cast aluminum double groove water pump pulley and double groove crank pulley, and a matched pair of heavy duty belts. Has a 1:1 water pump/crankshaft speed ratio.

Fits Small Block Chevy V8 with '55-'68 short-style water pump with either a 5/8" or 3/4" 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

Specs


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

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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.

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  • 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.

 

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Water Pump ID Chart (GIF)