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Product Summary

2.89" Overall Diameter, V-Belt Belt Type, Steel

  • Adapts GM alternator to original 5/8" belt
  • Compatible on all Powermaster alternators, generators and most GM alternators
  • Bolt hole length is .71"
  • Zinc-plated for rust and corrosion prevention
  • Premium steel construction

Key Specs

MFG. Part #91016250
BrandSpeedway Motors

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Details

So you've converted your Flathead-powered rod over to 12 volts and bolted a GM alternator in place. Now it's time to install the belt, but your engine pulley is 5/8" and the alternator is 1/2"!

Don’t worry, Speedway has you covered. This alternator pulley allows the use of a 5/8" wide Flathead-style belt on GM externally regulated, SI and one-wire alternators.

Specifications

KEY SPECS
MFG. Part #91016250
BrandSpeedway Motors
GENERAL
Overall Diameter2.89"
Belt TypeV-Belt
Overall Thickness1.28"
Hole Diameter.67"
Belt Width.68"
Material TypeSteel
Inside Diameter1.38"
Groove Count1
Inside Length.52"
FinishZinc Plated
Sold in QuantityEach
NotesBolt hole length is .71" Pulley will work on all Powermaster alternators/generators as well as most GM alternators.