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March Performance 20423

March Performance Outward Mount High Water Flow Serpentine Drive Kit (A)=3-9/32" Includes Brackets and Pulleys to Install:

655-20423

Free Shipping Ships directly from the manufacturer on 10/22/19
Save $10 off $199, $45 off $499, $100 off $999. Promo Code: FALLFUN exclusions apply

$1,230.99
March Performance Outward Mount High Water Flow Serpentine Drive Kit (A)=3-9/32" Includes Brackets and Pulleys to Install: $1,230.99
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Outward Mount High Water Flow Serpentine Drive Kit
  • (A)=3-9/32"
    Includes Brackets and Pulleys to Install:
  • Reverse Rotation Short Water Pump
  • Driver Side Alternator
  • Sanden 505 or 508 A/C Compressor
  • Saginaw Press Fit Power Steering Pump
  • March Performance 20423 Details

    Deluxe Series Outward Mount Serpentine Kits

  • High Water Flow Ratio Pulleys
  • Reverse Rotation Water Pump
  • Check Bolt pattern (A) 3-9/32" Bolt Hole Centers; Fits GM L98 & ZZ4 Aluminum Cylinder Heads

    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
    Yes
    Remote Reservoir Power Steering Pump
    1987 Sunbird small remote reservoir pump
    -
    Belt Size
    Dayco 6-rib belt
    103.75"

  • Uses Gates belt #465-K061031

  • Specifications:

    Manufacturer's Part Number:
    20423

    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.

    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

  • Items You Need

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

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.