Lower Crankshaft Pulley, Small Block Chevy Short Pump, Mandrel Drive
Chevy Small Block V8, 5.38" Overall Diameter, 2.38" Overall Thickness, 1.00" Inside Diameter
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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.
- Center register machined to work with 1" OD lower drive mandrels
- 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
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