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Proform 67203

650 CFM High Performance 4150 Carburetor Main Body Mechanical Secondary Design

Proform 67203

778-67203

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Proform 67203 650 CFM High Performance 4150 Carburetor Main Body Mechanical Secondary Design $162.99
650 CFM High Performance 4150 Carburetor Main Body
  • Mechanical Secondary Design
  • Gasoline
  • Down-Leg Boosters
  • Zinc Body
  • Flows up to 690 CFM
  • Fits Holley Double Pumper Model #4777 (650 CFM)

  • Proform 67203 Details

    Mechanical Secondary Carburetors

  • Technical Note: Main body does not retain vacuum advance port in original metering block.

  • Specifications:

    Technical Note
    Main body does not retain vacuum advance port in original metering block.
    Accelerator Pump Discharge Nozzle Included
    Yes
    Air Bleed Material
    Brass
    Air Bleeds Included
    Yes
    Booster Type
    Down-leg
    Fuel Bowl Gaskets Included
    Yes
    Fuel Bowl Screw Gaskets Included
    Yes
    Jet Material
    Brass
    Jet Sizes Included
    72/84
    Jets Included
    Yes
    Main Body Finish
    Zinc iridited
    Main Body Gasket Included
    Yes
    Main Body Material
    Cast zinc
    Metering Block Gaskets Included
    Yes
    Metering Plate Gaskets Included
    No
    Primary Discharge Nozzle Size (in.)
    0.031
    Primary Inner Air Bleed Sizes Included
    36
    Primary Outer Air Bleed Sizes Included
    73
    Quantity
    Sold individually
    Secondary Inner Air Bleed Sizes Included
    36
    Secondary Outer Air Bleed Sizes Included
    73
    Manufacturer's Part Number:
    67203

    Proform's High Performance Carburetor Main Body is a 100% new, direct replacement component for your wore out or leaking carb main body. The race inspired design helps add up to 25-50 horsepower. It is packed with features like smooth radius venturis, down-leg or annular boosters, adjustable screw-in air bleeds, air horn and choke plate delete. This main body is developed to get maximum air flow that easily turns your street carb into a high performance race-design carb. This high performance swap is an easy installation utilizing your existing metering blocks, fuel bowls and base plate. Comes complete with instructions, all necessary non-stick replacement gaskets and a high performance jet kit. This main body does not retain vacuum advance port in original metering block.

    Features:
  • 100% New Components, Not re-built
  • All Aluminum Construction (excluding p/n 778-67203, Zinc Construction)
  • Smooth Radius Venturis
  • Choke Horn Deleted
  • High Performance Down-Leg or Annular Boosters
  • Adjustable Screw-In Air Bleeds
  • Easy Swap, Direct Replacement
  • Includes Instructions, Non-Stick Gaskets and Jet Kit

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