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Product Summary

Universal Fit, 4-Barrel Carburetor Barrels, 650 CFM CFM

    Key Specs

    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    CFM650 CFM
    Carburetor Flange Type4-Barrel Square Bore
    FinishShiny

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    Details

    650 CFM ALUMINUM DOUBLE PUMPER CARBURETOR W/ ELECTRIC CHOKE

    Electric Choke Mechanical Secondaries-4150

    Holley upgraded their two most popular sizes of double pumper with electric chokes. The 650 and 750 CFM models are available in the classic zinc and shiny polished finishes.

    Holley Double Pumper® carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors. From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you are burning up the street or the quarter mile. The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall and low rear end gears. The Double Pumper is available in a gold dichromate or tumble polished shiny finish and features dual accelerator pumps for additional fuel under initial acceleration; mechanical secondaries for great performance; dual feed fuel inlets for constant high volume fuel delivery and an electric choke for easy control of engine warm up. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.

    Features:

  • Shiny finish for corrosion resistance and classic Holley looks
  • Optimized street/strip calibration that works out-of-the-box
  • Electric choke for precise cold start control
  • Mechanical secondaries for awesome tire turning performance
  • Dual accelerator pumps for additional fuel under initial acceleration
  • Dual feed fuel inlets for constant high volume fuel delivery
  • Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
  • Charts

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Specifications

    KEY SPECS
    MFG. Part #0-4777SAE
    BrandHolley
    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    CFM650 CFM
    Carburetor Flange Type4-Barrel Square Bore
    FinishShiny
    GENERAL
    Choke TypeElectric
    CFM Range600-699 CFM
    Material TypeAluminum
    ColorNatural
    Secondary TypeMechanical
    Model4150
    Overall Height3.250"
    Fuel Inlet TypeDual
    New or RemanufacturedNew
    Throttle Linkage TypeUniversal
    Boosterstraight
    Emission Code3
    Supercharged ApplicationNo
    Throttle Bore1.688 in.
    Vacuum Ports1 timed (spark) port, 1 full, and 1 PCV port
    Bolt Hole Pattern5-3/16" x 5-5/8"
    Carburetor Height3.25
    Primary Power Valve6.5 Hg
    Primary Pump Nozzle Size28
    Primary Jet Size67
    Secondary Jet Size73
    GTIN Code090127005774
    Sold in QuantityEach