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Quick Fuel SQ-850 Street-Q Carburetor 850CFM

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Quick Fuel SQ-850 Street-Q Carburetor 850CFM
Quick Fuel Technology

|

#424SQ850

Quick Fuel SQ-850 Street-Q Carburetor 850CFM

$782.95

/each

Factory Shipped

$870.95

Save $88.00


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Product Summary

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

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    Key Specs

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

    Need To Know

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    855.313.9176
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    Quick Fuel Technology SQ-850 Details

    Quick Fuel Technology's new Street-Q carburetor is intended to deliver legendary Q-Series performance to hardcore street enthusiasts at a reduced price. The major differences between the Street-Q and the race-bred Q-Series is the substitution of cast metering blocks and a cast throttle body in place of fully-machined billet components. All of the critical functionality is retained - 2-circuit metering, downleg boosters, changeable idle and high-speed air bleeds and 4-corner idle. A universal throttle lever design accommodates Ford A/T kickdowns, 700-R4 bracket mounting holes and the ability to mount brackets for Chrysler vehicles. Available sizes include 650, 750, 850, and 950cfm for mechanical secondary models and a 750 vacuum secondary is also offered.

  • Lightweight die-cast aluminum components
  • Changeable idle and high-speed air bleeds
  • Vacuum And mechanical secondary models
  • 2-circuit metering - 4-Corner idle system
  • Downleg boosters
  • Universal throttle lever design fits Ford A/T Kickdown, 700-R4 mounting holes - accepts brackets for Chrysler vehicles

    • Rebates

    Holley October Promo 10% Off Select Parts Sale

    Holley October Promo 10% Off Select Parts SaleHolleyOctoberPromo10%OffSelectPartsSale

    Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

    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.
    CA Prop 65
    CARB warning

    Quick Fuel Technology SQ-850 Specifications

    KEY SPECS
    MFG. Part #SQ-850
    BrandQuick Fuel Technology
    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    Choke TypeNo Choke
    CFM Range800-899 CFM
    CFM850 CFM
    Carburetor Flange Type4-Barrel Square Bore
    FinishPolished
    Material TypeAluminum
    ColorNatural
    Secondary TypeMechanical
    Fuel Inlet TypeDual
    Gasket(s) IncludedYes
    New or RemanufacturedNew
    Throttle Linkage TypeUniversal
    GENERAL
    BoosterDown-leg
    Bolt Hole Pattern5.160" x 5.625"
    Primary Power Valve4.5 Hg
    Primary Jet Size76
    Secondary Jet Size84
    Primary Outer Air Bleed Sizes Included70
    Primary Inner Air Bleed Sizes Included33
    Secondary Outer Air Bleed Sizes Included70
    Secondary Inner Air Bleed Sizes Included33
    Primary Discharge Nozzle Size0.033
    Secondary Discharge Nozzle Size0.033
    GTIN Code849804016103
    Sold in QuantityEach

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