Product Summary

Mechanical Water Pump Type, Clockwise/Standard Rotation

  • Extra thick fan hub with 3/4" fan snout, 3/4" ultra duty bearings
  • Fan hub press-fit and set-screw retained, Precision impeller
  • 1 to 1 to ratio ensures maximum cooling with minimal power loss
  • CNC machined aluminum construction with deep grooves eliminates thrown belts
  • Ideal for 602 and 604 crate engines as well as others operating below 7000 RPM

Comes as a Kit

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Key Specs

Water Pump TypeMechanical
Water Pump StyleShort Depth
RotationClockwise/Standard
Pump FlowHigh-Volume
Housing MaterialAluminum
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91605240 Details

Water Pump

Speedway's adjustable water pump is tried, tested and true. It has great flow, superior quality and standard features that are typically only available on water pumps costing twice as much. State-of-the-art aluminum casting and a precision impeller provide equal flow to both cylinder banks. If you're using a cog belt on your race car, this is the pump you want since it's adjustable. The 1/2" mount holes in this pump are larger than normal, allowing it to be moved up or down slightly to help with belt tension.

  • Adjustable mounting holes
  • High flow and pressure rates
  • Adjustable cam stop
  • Extra-thick fan hub
  • 3/4" inch heavy duty bearing
  • Pressed-fit and set-screw-retained fan hub
  • Large-diameter shaft and reinforced housing make it ideal for oval-track applications

Learn how to choose the correct water pump for your application by reading our tech article.  SBC - Short vs Long Water Pump. 

 

Pulley Combo

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.

  • Heavy-duty aluminum construction
  • Matched V-belts - 30-5/8" x 3/8" belts
  • 1:1 to 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 used; included in this kit.  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. 

 

Kit Includes

  • (1) Small Block Chevy Adjustable Short Side Water Pump
  • (1) Aluminum Allen Pipe Plugs, 1/2 Inch NPT
  • (2) Aluminum Pipe Bushing Reducer Fittings, 1/2 NPT to 3/8 NPT
  • (1) Speedway 1:1 Pulley Combo, Small Block Chevy Short Pump
  • (1) Aluminum Lower Pulley Screw Kit, Fine Thread
  • (1) Aluminum Lower Pulley Spacer
  • (1) Universal Water Pump Shim Kit
  • (1) Aluminum Freeze Plugs with Return Set
  • (2) Black 90 Degree -8 AN Flare to 1/2 Inch NPT Pipe Adapter Fittings
  • (2) Black Straight -8 AN Flare to 3/8 Inch NPT Pipe Adapter Fittings
  • (2) Fragola 482508-BL AN Flare Tee Fittings, -8 AN to 3/8 NPT, Black
  • (6) Black Socketless Straight Push-On Hose Ends, -8 AN
  • (2) Black 90 Degree Socketless Push-On Hose Ends, -8 AN
  • (1) Aeroquip Special Application Socketless -8 AN Hose, Black, 6Ft Length

 

Charts

Speedway Motors 91605240 Specifications

KEY SPECS
MFG. Part #91605240
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleShort Depth
RotationClockwise/Standard
Pump FlowHigh-Volume
Housing MaterialAluminum
Housing FinishNatural
GENERAL
AdjustableYes
Pulley Type CompatibilityV-Belt
Pulley Diameter5.50"
Groove Count2
Belt Width0.38"
Block to Hub Distance5.625 Inch (5-5/8")
Heater Inlet Size1/2" NPT
Hose ID1.83"
Pilot Shaft Diameter0.75 Inch
Gasket(s) IncludedYes
Hardware IncludedYes
Sold in QuantityKit

Questions & Answers

Fitment

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 400

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  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 400

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  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 265

  • 2-Piece Rear Main Chevy 283

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