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Part # 91015484

Small Block Chevy Cast Alum. Short Pump Double Groove Lower Pulley

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  • Machined from lightweight cast aluminum
  • Superior belt retention with extra-deep grooves
  • 20% diameter reduction slows accessories down for less drag

$33.99

each

In Stock


Quantity

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Product Summary

Chevy Small Block V8, 5.4375" Overall Diameter

  • Machined from lightweight cast aluminum
  • Superior belt retention with extra-deep grooves
  • 20% diameter reduction slows accessories down for less drag
  • Adds top-end horsepower
  • Improved high-RPM cooling capabilities

Key Specs

MFG. Part #91015484
Overall Diameter5.4375"
Overall Thickness1.44"
Groove Count2
Belt TypeV-Belt

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Details

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
  • 5-7/16" diameter

Note: The lower crank pulleys 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.  

Item Details

Cast Aluminum Lower

Carb Warning:

FOR RACE/ OFF ROAD USE OR FOR USE ON PRE-1966 VEHICLES.

EMISSIONS WARNING: THIS PART ONLY LEGAL FOR SALE OR USE IN CALIFORNIA FOR RACING (COMPETITION) VEHICLES WHICH MAY NEVER BE USED, REGISTERED, OR LICENSED FOR USE UPON A PUBLIC HIGHWAY, OR IF INSTALLED IN VEHICLES MODEL-YEAR 1965 OR OLDER; MOTORCYCLES MODEL-YEAR 1977 OR OLDER; OR OFF-HIGHWAY RECREATIONAL VEHICLES (SUCH AS OFF-ROAD MOTORCYCLES AND ALL-TERRAIN VEHICLES) MODEL-YEAR 1996 AND OLDER. ANY OTHER USE RENDERS THE VEHICLE TAMPERED AND NOT LEGAL FOR USE ON CALIFORNIA PUBLIC HIGHWAYS (ANY PUBLIC STREET OR ROADWAY, PUBLIC DIRT ROAD, PUBLIC PARK, OR PUBLICLY MAINTAINED RIGHT OF WAY OPEN TO THE USE OF THE PUBLIC FOR VEHICULAR TRAVEL). VIOLATIONS SUBJECT TO $37,500 PENALTY PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION, LOSS OF USE ON CALIFORNIA PUBLIC RIGHT OF WAYS, AND PROOF OF CORRECTION FOR TAMPERING. THERE ARE SIMILAR RESTRICTIONS AND PENALTIES UNDER FEDERAL LAW AND THE LAWS OF ALL OTHER STATES WITH PENALTIES UNDER FEDERAL LAW OF UP TO APPROXIMATELY $45,268 PER TAMPERED VEHICLE AND/OR ENGINE.

Specifications

KEY SPECS
MFG. Part #91015484
BrandSpeedway Motors
Overall Diameter5.4375"
Overall Thickness1.44"
Groove Count2
Belt TypeV-Belt
GENERAL
Material TypeAluminum
FinishPolished
Sold in QuantityEach
Water Pump StyleShort