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Product Summary

Universal Fit, 4-Barrel Carburetor Barrels, 850 CFM CFM

    Key Specs

    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    Choke TypeNo Choke
    CFM Range800-899 CFM
    CFM850 CFM

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    Demon Carburetion MAD-850-VS Details

    Holley is proud to announce that the next generation of Race Demon™ carburetors have arrived. They are available in a full range of sizes and options for your street/strip car. They feature billet-aluminum metering blocks, billet aluminum baseplates, large capacity fuel bowls complete with dual sight glasses, dual threaded inlets on each side, and internal baffling to prevent fuel slosh when you are on the track. For high horsepower street and race engines, the aluminum Mighty Demon™ delivers more power and performance for your race car.

    Features:

  • All aluminum polished construction with billet metering blocks and base plate (Now 40% lighter than the original Demons!)
  • Fuel bowls and main body have been redesigned for a sleeker, more stylish appearance
  • Completely re-engineered and re-calibrated for better drivability and full throttle performance
  • Re-designed throttle lever with integrated Ford A/T, 700-R4, and Chrysler kick down options
  • Fuel bowls now have dual threaded inlets on each side, dual sight glass windows, and internal baffling for improved fuel slosh control
  • Secondary fuel bowls include notched floats and jet extensions to prevent fuel starvation during hard launches
  • Changeable idle, high-speed air bleeds And power valve restrictions for precise tuning
  • Billet Baseplate with Idle-Eze™ allows precision fine tuning of the idle speed resulting in a smoother transition from off-idle
  • CARB Warning

    For use on pre-1966 vehicles only

    Emissions warning: this part only legal for sale or use in California 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.

    Demon Carburetion MAD-850-VS Specifications

    KEY SPECS
    MFG. Part #MAD-850-VS
    BrandDemon Carburetion
    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    Choke TypeNo Choke
    CFM Range800-899 CFM
    CFM850 CFM
    Carburetor Flange Type4-Barrel Square Bore
    FinishShiny
    Material TypeAluminum
    ColorSilver
    Secondary TypeVacuum
    Fuel Inlet TypeDual
    New or RemanufacturedNew
    Throttle Linkage TypeUniversal
    GENERAL
    Speedway Motors Catalog Part #425-MAD850VS
    BoosterDown-leg
    Bolt Hole Pattern5.160" x 5.625"
    Carburetor Height3.25
    Primary Power Valve4.5 Hg
    Primary Jet Size82
    Secondary Jet Size84
    Primary Outer Air Bleed Sizes Included73
    Primary Inner Air Bleed Sizes Included33
    Secondary Outer Air Bleed Sizes Included67
    Secondary Inner Air Bleed Sizes Included33
    Primary Discharge Nozzle Size0.033
    GTIN Code090127739952
    Sold in QuantityEach