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Proform 650-800 CFM High Performance 4150 Carburetor Main Body Mechanical Secondary Design

Proform 67100C


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Proform 650-800 CFM High Performance 4150 Carburetor Main Body Mechanical Secondary Design $114.99
650-800 CFM High Performance 4150 Carburetor Main Body
  • Mechanical Secondary Design
  • Gasoline
  • Down-Leg Boosters
  • Aluminum Body
  • Fits Holley Double Pumper Models #4777 (650 CFM), #4778 (700 CFM), #4779 (750 CFM), #4780 (800 CFM)

  • Proform 67100C Details

    Mechanical Secondary Carburetors

  • High-Flow Main Body
  • Dyno-Proven Horsepower And Torque Gain
  • Adjustable Screw-In Air Bleeds
  • High-Performance Down-Leg Boosters
  • Maximum Air Flow
  • No Air Horn; Choke Tower; Or Choke Control
  • High-Rate Air-Flow Section Design

  • Specifications:

    Technical Note
    Main body does not retain vacuum advance port in original metering block.
    Accelerator Pump Discharge Nozzle Included
    Air Bleed Material
    Air Bleeds Included
    Booster Type
    Fuel Bowl Gaskets Included
    Fuel Bowl Screw Gaskets Included
    Jet Material
    Jet Sizes Included
    Jets Included
    Main Body Finish
    Main Body Gasket Included
    Main Body Material
    Metering Block Gaskets Included
    Metering Plate Gaskets Included
    Primary Discharge Nozzle Size (in.)
    Primary Inner Air Bleed Sizes Included
    Primary Outer Air Bleed Sizes Included
    Sold individually
    Secondary Discharge Nozzle Size (in.)
    Secondary Inner Air Bleed Sizes Included
    Secondary Outer Air Bleed Sizes Included
    Manufacturer's Part Number:

    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.

  • 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

  • 67100C is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from Quality part I bought this to replace the main body on my Mighty Demon 750 because the venturies melted in a back fire. I waited 4 months for Holley to send me a replacement and never got it. So, I chose the ProForm, and I am very pleased with it. Everything swapped over just fine. The only thing I didn't like was that the description said there would be instructions and a jet kit. There were no instructions and only a replacement set of jets. But overall it worked for what I needed it to do.
    Date published: 2017-05-04
    • y_2018, m_8, d_20, h_1
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
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    • clientName_jegs

    if used on a 750 baseplate what CFM will it flow?

    Asked by: CharlieD2010
    This would flow at the baseplate rating of 750 cfm.
    Answered by: Rusty B
    Date published: 2018-07-11

    Does this work with 2 corner idle or 4 corner idle ?

    Asked by: Don Rutter
    This is designed for 2 corner idle circuits.
    Answered by: Rusty B
    Date published: 2018-04-09
    • y_2018, m_8, d_20, h_1CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations