Small Block Chevy Cast Alum. Long Pump Double Groove Lower Pulley
Chevy Small Block V8, 5.44" Overall Diameter, 2.80" Mounted Length, .79" Inside Diameter
- S/B Chevy, double-groove pulleys, 20% reduction
- Available for long or short water pumps
- 5/8" centering hole
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.
This is a 25% reduction pulley when used with the correct upper pulley, part number 91015476.
- 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" O.D.
Available for long water pumps. 5/8" shaft.
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.
Item DetailsCast Aluminum Lower
NotesMounted length is from the face of the harmonic balancer towards the front of the vehicle. 25% reduction.
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
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