Edelbrock’s Annular Flow Booster technology brings superior fuel atomization to all dual-quad applications with the AVS2 500 CFM Carburetor #1904 which 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 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.
Features
Kit Includes:
Edelbrock 1904 AVS2 500CFM Dual-Quad Carburetors (2)
Manual choke (non-EGR)
500 CFM
Satin finish
Square flange
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
The adapter is 7-1/2″ center of the intake base flange to the center of the carb mount flange
Linkage tower threads in the 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
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