; Precision machined from high grade, lightweight aluminum castings; Extra-deep belt grooves provide added belt retention during rapid changes in engine RPM; Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower-robbing drag; High RPM water pump operation is improved, reducing impeller speed below cavitation threshold; Uses 36° x 17/32 wide belt

• Cast Aluminum
• Double groove
• 4-bolt dampeners
• Ford 351-400 Cleveland/Boss 302
• Grooves give belt retention
• Diameter slows fan/water pump/alternator speed to reduce drag
• Pump impeller speed below cavitation threshold
• 36° x 17/32W belt.

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Information:

Crankshaft Pulley; Billet; double groove; 4-bolt dampeners; Ford 351-400 Cleveland, Boss 302; Precision machined from high grade, lightweight aluminum castings; Extra-deep belt grooves provide added belt retention during rapid changes in engine RPM; Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower-robbing drag; High RPM water pump operation is improved, reducing impeller speed below cavitation threshold; Uses 36° x 17/32 wide belt.