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March Performance Serpentine Conversion Pulley Set - Mid Performance Ratio Big Block Chevy
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Product images may differ from actual product appearance.
655-7640
March Performance 7640 Details
Big Block Chevy With Standard Rotation Long Water Pump
Alternator Belt Size with March Brackets: 42.5'' (Gates #465-K060420) Additional Required Components:
Power Steering Belt Size with March Brackets: 37-3/4'' (Gates #465-K050370)
Specifications:
March Chevy Serpentine Conversion Pulley Sets replace your low performance v-belts, eliminate belt throwing and slip while retaining your standard rotation water pump. These pulley sets are available in three ratios; Performance for limited street/racing applications, Mid Performance for weekend street/track and High Waterflow for daily drivers. Precision CNC machined from 6061-T6 aluminum for extra strength, wear and to run perfectly true. Finished with a ''No Polishing'' clear or protective silver powdercoat for a maintenance-free finish!
Mid Performance Ratios High Water Flow Ratios
Performance Ratios
Uses a smaller performance crank pulley and larger water pump pulley to increase horsepower by reducing accessory drag, with typical gains of 12-15 horsepower at the rear wheels.
Uses performance crank pulley to decrease accessory speed to increase horsepower and a high water flow water pump pulley to maintain cooling.
Increases cooling by speeding up water flow and fan speed. This helps at critical low speed driving where most overheating occurs.
