Outward Mount High Water Flow Serpentine Drive Kit (A)=4-3/16" Includes Brackets and Pulleys to Install:
InfoVehicle Info Needed
MARCH PERFORMANCEPART NUMBER: 655-20409

Outward Mount High Water Flow Serpentine Drive Kit (A)=4-3/16" Includes Brackets and Pulleys to Install:

$1,19500
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Deluxe Series Outward Mount Serpentine Kits
  • High Water Flow Ratio Pulleys
  • Reverse Rotation Water Pump
  • Check Bolt pattern (A) 4-3/16" Bolt Hole Centers; Fits 1969-later Cast Iron & Aftermarket Aluminum Cylinder Heads
    • Outward Mount High Water Flow Serpentine Drive Kit
    • (A)=4-3/16"
      Includes Brackets and Pulleys to Install:
    • Reverse Rotation Short Water Pump
    • Driver Side Alternator
    • Sanden 505 or 508 A/C Compressor

      Kit drives:
      Alternator
      GM 6-12 o'clock mount 6" or 7" dia. alternator
      Yes
      A/C
      Sanden 505 or 508 serpentine compressor
      Yes
      Water Pump
      1984-91 Corvette - Reverse rotation
      Yes
      Saginaw Keyway Power Steering Pump
      1966-74 keyway Saginaw pump with canister
      -
      Saginaw Press Fit Power Steering Pump
      1975-78 press fit Saginaw pump with canister
      -
      Remote Reservoir Power Steering Pump
      1987 Sunbird small remote reservoir pump
      -
      Belt Size
      Dayco 6-rib belt
      92.23"

    • Uses Gates belt #465-K060915

    March Chevy Small Block Blower, Ram Jet and Multi-Carbs Outward Mount Serpentine Kits is designed to solve the issue with mounting your accessories on engines with blowers, superchargers, Ram Jet style fuel injection or multiple carburetors. They replace your low performance V-belts, pulleys, brackets and eliminate any issues with belt throwing. Complete and simple to bolt on...these "Deluxe" outward mount kits use original style mounting brackets to locate your alternator and A/C outside the engine outline and back towards the cylinder heads, ideal for engine compartments with minimal engine to radiator clearance. Precision CNC-machined from solid billet 6061-T6 aluminum to fit perfectly as well as handle high torque and vibration.

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    The high tensile strength of the material combined with the hard coating on all high wear areas means a much longer duty life than common cast pulleys with no chance of any type of fracturing or structural failure. The street rod ratio pulleys allow increased water flow and fan speed, which is critcial at low speed driving. All pulleys and brackets have a "No Polishing" maintenance-free clear powdercoating. An adjustable stainless steel tensioning rod with chrome-moly rod ends and mounting hardware is also included.

     

    Kits Include:

    • Alternator Bracket
    • Alternator Pulley with Fan and Nose Cover
    • Water Pump Pulley with Nose Cover
    • Crankshaft Pulley
    • Two Idler Brackets; One with Dual Idlers, One with Single Idler
    • Heater Hose Extension Fitting
    • Tensioning Rods & Adjustable Rod Ends
    • Grade 8 Mounting Hardware Power Steering Kits Add:
    • Power Steering Bracket & Pulley A/C Kits Add:
    • A/C Bracket, Hardware and Nose Cover Kits Require:
    • Fits most 1955 and newer Chevys and 1963-82 Corvettes with Blower/Supercharger, Ram Jet style fuel injection or multiple carburetors.
    • Will not fit 62-67 Novas with factory shock towers
    • Up to 17'' Clearance from water pump centerline to side of engine compartment (see diagram below)
    • Water pump pulley with nose cover extends 6.5'' from engine block, plus you will need to consider clearance for a mechanical or electric cooling fan
    • A reverse rotation 1984-91 Corvette water pump
    • Two accessory holes in cylinder head for mounting
    • If using ZZ4 timing cover you will have to modify short water pump for clearance
    • GM 10si style alternator with mounting tabs at 6 and 12 O'Clock
    • Power steering kits require power steering pump style specified, must have side motor mounts on 1955-57 Chevy, must use remote reservoir style on Chevelle, Monte Carlo, El Camino, 1970-up Camaro and S-10
    • A/C kits require a Sanden 505 or 508 Compressor
    Part TypeCrankshaft Pulley
    Product LineMarch Chevy Small Block Blower, Ram Jet and Multi-Carbs Outward Mount Serpentine Kits
    BrandMARCH PERFORMANCE
    Package Width19.46
    Weight19.46 PG
    Part CategoryPerformance Parts
    Hardware IncludedYes
    Idler Brackets IncludedYes
    Idler/Tensioner IncludedYes
    Air Conditioning Bracket IncludedYes
    Crankshaft Pulley Grooves6-groove, serpentine
    Alternator Pulley IncludedYes
    Alternator Nose Cover IncludedYes
    Water Pump Pulley GroovesNon-ribbed
    Idler Pulley GroovesNon-ribbed
    Bracket MaterialBillet aluminum
    Pulley Set StyleHigh water flow ratio
    Crankshaft Nose Cover IncludedNo
    Water Pump Pulley IncludedYes
    Alternator Brackets IncludedYes
    Pulley StyleSerpentine Pulley
    Pulley FinishClear powdercoated
    Crankshaft Pulley IncludedYes
    QuantitySold as a kit
    Power Steering Brackets IncludedNo
    Alternator Pulley Grooves6-groove, serpentine
    Air Conditioning Cover IncludedYes
    Air Conditioning Pulley IncludedNo
    Power Steering Pulley IncludedNo
    Alternator Fan IncludedYes
    Idler Cover IncludedNo
    Part FitmentSemi Universal
    Bracket FinishClear powdercoated
    Pulley MaterialBillet Aluminum
    Water Pump Nose Cone IncludedYes
    Vendor Part Number20409
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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    Some parts are not legal for use in California or other states with similar laws / regulations
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