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Serpentine Pulleys

351 Cleveland, 351 Modified, 400 Modified Serpentine ConversionClear Powder Coated

Replace your low performance V-belt pulleys while retaining your standard rotation water pump. Simple to bolt on! Increases horsepower and eliminates belt throwing.


Performance Ratios

Increases horsepower by reducing accessory drag. 12.5-15 h.p. at rear wheels typical. Eliminates belt throwing. Designed for normal street driving. CNC machined to run perfectly true. 6061-T6 aluminum for extra strength and wear. Finished with a “No Polishing” clear powdercoat.


High Water Flow Ratios

Increases cooling by speeding up water flow and fan speed. This helps at critical low speed driving where most overheating occurs. Precision CNC machined from billet 6061-T6 aluminum. Finished with a “No Polishing” clear powdercoat.


351 Windsor Serpentine Conversion

Requirements:

  • Factory 4 bolt damper   • Standard rotation water pump   • Driver side lower radiator hose


Note: Damper face to water pump flange face 3.25"

* Cannot use power steering or A/C.

** If you have a aftermarket damper please contact March Performance tech support before ordering.


*Individual Pulleys available on Pulley Kit pages

 

Performance Ratio

Set

Crank Pulley

Water Pump Pulley

Alternator Pulley

1670

6 rib (4 3/8") 2011

6 rib (5 1/2") 2004

6 rib (2 3/8") 206

High Water Flow Ratio

1675

6 rib (6 1/8") 2008

6 rib (5 1/2") 2004

6 rib (2 3/8") 206

 

Optional Water Pump Pulley Cover : 312

Optional Billet Alternator Fan : 221

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