Product Summary

Chevy Small Block V8, Chevy 90-Degree V6, Adjustable

  • Extra thick fan hub with 3/4" fan snout, 3/4" ultra duty bearings
  • Fan hub press-fit and set-screw retained, Precision impeller
  • Adjustable cam stop
  • Adjustable mounting holes
  • Higher flow and pressure rate with equal flow to both cylinder banks

Key Specs

MFG. Part #91015582
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleShort
Pump FlowHigh-Volume

Need To Know

Free Shipping on Orders Over $149

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy

Speedway Motors 91015582 Details

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
  • Legal for IMCA Southern Sport Modified class in 2023

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


  1. Water Pump ID Illustration (GIF)
  2. Can also be used as a high-performance replacement on 1971-1982 Corvettes.


Speedway Motors 91015582 Specifications

MFG. Part #91015582
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleShort
Pump FlowHigh-Volume
Housing MaterialAluminum
Housing FinishNatural
Housing ColorNatural
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
Weight6.25 lbs.
Sold in QuantityEach
NotesClearance from back of pump to engine block mount is 1.00" Pulley hub is retained with a set screw. Pump has bosses that can be drilled/tapped on either side for bypass hose attachment.