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
  • Drive pulley has a 3.31" O.D. and 2.8" I.D.
  • Cog belts are used to drive dry sump oil pumps and other engine accessories
  • Aluminum drive mandrel

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

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Speedway Motors 91605239 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. 

 

Gilmer Drive & Fittings

  • Gilmer or cog belts are the tried and true belts used to drive dry sump oil pumps and other engine accessories
  • Mandrel drive belt guide washer Made from aluminum with 3" O.D. and 1" bore
  • End cap with a .250" recess to index on mandrel with a 3" O.D
  • Grade 8 mandrel bolt (7/16"-20 thread) fits small block Chevy V8 and our mandrels
  • Mandrel spacer to properly space and align the mandrel pulley pack
  • Aluminum pipe thread to 37° AN adapter fitting
  • -6 AN female to push-on hose barb adapter
  • 90° fuel line hose connector

 

Kit Includes

  • (1) Small Block Chevy Adjustable Short Side Water Pump
  • (1) Brinn 38030 Gilmer Water Pump Drive Pulley, 28 Tooth
  • (1) Brinn 38016 Gilmer Mandrel Drive Pulley, 16 Tooth
  • (1) Brinn 38061 Mandrel Drive Belt Guide Washer
  • (1) Gilmer Replacement Drive Belt 1/2 Wide, 22.5 Inches Long
  • (1) Crank Mandrel Drive End Cap Plate
  • (1) Aluminum 3.250 Crank Drive Mandrel, S/B Chevy
  • (1) Crank Drive Mandrel Bolt, Grade-8, 7/16-20 x 6 Inch
  • (1) Speedway Aluminum Spacer for Crank Mandrel Drive, 3 Inch
  • (2) Aluminum Pipe Bushing Reducer Fittings, 1/2 NPT to 3/8 NPT
  • (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 91605239 Specifications

KEY SPECS
MFG. Part #91605239
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleShort Depth
RotationClockwise/Standard
Pump FlowHigh-Volume
Housing MaterialAluminum
Housing FinishNatural
GENERAL
AdjustableYes
Pulley Type CompatibilitySerpentine
Belt Width1.00"
Block to Hub Distance5.625 Inch (5-5/8")
Heater Inlet Size1/2" NPT
Hose ID1.83"
Shaft Length0.86"
Pilot Shaft Diameter0.75 Inch
Gasket(s) IncludedYes
Hardware IncludedYes
Weight6.25 lbs.
Sold in QuantityKit

Questions & Answers

Fitment

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