Free shipping on all orders - Details
Motor Life Events Community Support
ASK OUR EXPERTS
1-866-464-6553
Videos
Holley

Holley 0-80573S 750CFM Factory Refurbished 4bbl Supercharger Carb

Manual Choke Mechanical Secondaries-4150

Part # FR-80573S Be the first to write a review
    Holley Double PumperĀ® 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 Supercharger Double Pumper with a 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 a manual choke for easy control of engine warm up. These carburetors that are intended for use with superchargers, and have a unique capability that allows their power valves to reference the intake manifold vacuum below the supercharger. This allows the power valve to operate as it should, based off intake manifold vacuum. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Without this external referencing, the power valve would be "reading" the supercharger vacuum, which has no bearing on the engine load.

    Features:

    • Tumble polished shiny finish for good looks
    • Small block Chevrolet 1x4, 170 series blower calibration
    • Manual (Cable driven, hand operated) choke for precise cold start control
    • Dual accelerator pumps for addition fuel under initial acceleration
    • Dual feed fuel inlets for constant high volume fuel delivery
    • Mechanical Secondaries for perfect off the line launches
    • 4 corner idle allows you to precisely control your idle system
    • Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
    • Boost referenced power valve for proper enrichment under acceleration
    • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

    About Holley

    Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to finish, Holley has the parts to make your dream a reality.

    Barrels4
    BoosterDown Leg
    Brand Holley
    CFM750
    ChokeManual
    ConditionFactory Refurbished
    Emission Code3
    FinishShiny
    FuelGasoline
    Fuel InletDual
    Marine UseNo
    MaterialZinc
    Model4150
    Primary Main Jet74
    Primary Power Valve10.5
    Primary Pump Nozzle Size28
    Product TypeFactory Refurbished Carburetor
    SecondariesMechanical
    Secondary Main Jet84
    Secondary Pump Nozzle Size31
    Supercharged ApplicationYes
    Throttle Bore1.688 inch
    WarrantyLimited 90 Day
    UPC090127649534
    Part NumberFR-80573S
    3

    This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

    The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

    • 1965 and older U.S. manufactured California Certified vehicles
    • 1967 and older U.S. manufactured Federally Certified vehicles
    • 1967 and older Foreign manufactured vehicle

    The following vehicles are considered Racing Use Only Vehicles:

    • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

    WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

    The following vehicles are considered Emissions Controlled Vehicles:

    • 1966 and newer U.S. manufactured California Certified vehicles
    • 1968 and newer U.S. manufactured Federally Certified vehicles
    • 1968 and newer Foreign manufactured vehicle
    Holley Carburetor Selector
    Notice for Part# 0-80573S
    Instructions for Part# 0-80573S
    Carburetor Numerical Listing for Part #0-80573S
    We have limited stock on this part and on rare occasion receive more orders that can be filled.Ā  If the part is oversold, backorders will be canceled and all payments will be refunded.
    Limited 90 Day: See Details
      Reviews

        Your Review

        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

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

         X  Holleydays 2021
         X  Holleydays 2021