Product Summary

Chevy Small Block V8, Dual Quad Intake Manifold Type

    Comes as a Kit

    Key Specs

    MFG. Part #9108402
    BrandSpeedway Motors
    Carburetor Barrels4-Barrel
    CFM500 CFM

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    Speedway Motors 9108402 Details

    Looking for the next step you can take to set your car apart from everyone else? With this kit, you can shake things up by adding a unique cross-ram setup onto your Small Block Chevy. This kit makes use of carburetor adapters from Offenhauser which are designed to mount the included Edelbrock AVS2 carburetors onto the included Edelbrock 5425 dual quad manifold. The adapters are aluminum and will provide a smooth transition from carb to intake. Edelbrock's C-26 intake manifold is designed for 1955-1986 262-400 c.i.d. S/B Chevys with a powerband of 1500-5000 rpm. This dual-quad is low profile for hood clearance on most vehicles. Top everything off with the included finned gasser air scoops for the perfect aggressive/nostalgic gasser look!

    Edelbrock’s Annular Flow Booster technology brings superior fuel atomization to all dual-quad applications with the AVS2 500 CFM Carburetor #1904 that is specially calibrated for engines running two four-barrels. Annular Flow Boosters deliver near EFI-like drivability that you can feel as soon as you step on the gas. Fuel distribution is refined by eight equally spaced orifices in the booster rings that replace down-leg boosters which simply dump raw fuel into the venturi. Flat spots are completely eliminated, and throttle response in the low- to mid-RPM range is improved tremendously with no sacrificing of that top-end power that Edelbrock is known for. The AVS2 is unaffected by engine backfires since there are no power valves to blow out. For fast and simple part-throttle tuning, metering rods and springs can be changed in seconds without carburetor removal or fuel draining. AVS2 carbs have the unique ability to "hold a tune” when compared to other carburetors. Your tuning and adjustments stay unchanged, so performance remains consistent. Updated primary and secondary booster clusters in the AVS2 offer the most accurate and up-to-date calibration available for today's fuels and octane levels. Additionally, the unique Qwik-Tune Secondary Air Valve allows for limitless calibration of the secondary circuit. Adjustments can be with simple hand tools in seconds to suit your application. The AVS2 features a two-piece ease-of-tuning design that lets you make float level adjustments or replace internal components without draining the fuel from the carburetor or removing it from the engine. Like all Edelbrock carburetors, the AVS2 Series is designed, manufactured, assembled and calibrated by Edelbrock in the USA.


    Kit Includes:

    • Edelbrock 1904 AVS2 500CFM Dual-Quad Carburetors (2)
      • Manual choke (non-EGR)
      • 500 CFM
      • Satin finish
      • Square flange
    • Edelbrock 5425 SBC Dual Quad Intake Manifold
      • Air conditioning bosses and front oil filler tube boss included
      • Stock alternator brackets DO NOT fit
      • H.E.I. distributor WILL NOT fit
      • Manifold height @ front: 2.95"
      • Manifold height @ rear: 3.30"
      • Carb pad height: 3.125"
      • Port exit dimensions: 1.18" x 1.90"
    • Gasser Finned Aluminum Carb Air Scoops (2)
      • 13-1/2" long x 4-1/2" tall with inlet screen and bezel
      • 6-3/8" x 2-1/2" element and mounting hardware included
      • Polished aluminum finish
    • Offenhauser Cross Ram Adapters (2)
      • Designed for a dual quad intake manifold
      • 13.5" long
      • 4" high
      • Both carburetors will be spaced 15" apart center carb to center carb and 3" front to back center to center offset
      • Adapter is 7-1/2" center of intake base flange to center of carb mount flange
      • Linkage tower threads in adapter are female 1/8" npt thread
    • Offenhauser Dual Ram Linkage Kit (1)
      • This linkage kit is designed to be used with a pair of the included Offenhauser universal cross ram adapters, 560-5497.
      • Based on 8 3/4" center to center carb mounting
    • Carburetor Stud Kit, 1 3/8" (4)
      • Easy installation/removal of carb plates
      • Zinc plated studs, nuts, and washers
      • The four included sets are enough to install the cross ram adapters as well as the carbs
      • 1-3/8" overall length
      • 5/16" of 5/16"-18 threads on one end, 9/16" of 5/16"-24 threads on the other
    • Carburetor Base Gasket (4)
      • Simple paper gasket for mounting your 4150 style carburetor to a 4 hole style intake manifold.
      • The four included are enough to install the cross ram adapters as well as the carbs

    Speedway Motors 9108402 Specifications

    MFG. Part #9108402
    BrandSpeedway Motors
    Carburetor Barrels4-Barrel
    CFM500 CFM
    Intake Manifold TypeDual Quad
    Carburetor QuantityTwo
    Carburetor Flange Type4-Barrel Square Bore
    Choke TypeManual
    Fuel TypeGasoline
    Intake Manifold MaterialAluminum
    Intake Manifold FinishNatural
    Carburetor FinishSatin
    Air Cleaner TypeOpen Oval Air Scoop
    Air Cleaner FinishPolished
    Secondary TypeMechanical
    Linkage IncludedYes
    Intake Gaskets IncludedNo
    Intake Manifold Fasteners IncludedNo
    Sold in QuantityKit