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AVS2 500 CFM #1903 Carburetor with Electric Choke for Dual-Quad

$466.09
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SKU
1903
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Details

Edelbrock’s Annular Flow Booster technology brings superior fuel atomization to all dual-quad applications with the AVS2 500 CFM Carburetor #1903 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. The AVS2 500 CFM carburetor is available with electric (#1903) or manual (#1904) choke in satin or EnduraShine finish. For small-cubic-inch single carburetor engines, order the specially calibrated AVS2 500 CFM #1901 (electric choke) or #1902 (manual choke). Like all Edelbrock carburetors, the AVS2 Series is designed, manufactured, assembled and calibrated by Edelbrock in the USA.

Documents & Installation Notes

Specs

Availability Available
Mounting Hole Quantity 8
Grade Type Performance
Gasket Or Seal Included Yes
Mounting Hole Diameter 0.355 in
Mounting Hardware Included No
Barrel Quantity 4
Flange Shape Square
Street Legal No
Secondary Jet Diameter 0.077 in
Small Venturi Diameter 1.630 in
Body Material Aluminum
Main Venturi Diameter 1.190 in
Spacer Included No
Metering Rod Length .070 in
Application Application Specific
UPC 00085347019038
Availability Note Available to Order
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Installation Notes
  • Manual choke AVS2 Carbs cannot be converted to electric choke. Carbs #1903, #1904 and #19034, #19044 are calibrated for dual-quad applications only and need to be purchased together, one manual and one electric. For single carb small-displacement engines and Street Tunnel Ram applications use carbs #1901, #1902, #19014 and #19024.
Body Color Satin Finish
Choke Type Electric
Marine Approved No
Maximum Flow Rating 500 cfm
Primary Jet Diameter 0.095 in