CARBURETOR,AVS SERIES, DUAL QUAD ANNULAR BOOSTERS 500 CFM (MANUAL CHOKE)

Brand New Edelbrock AVS2 Carburetor 500 CFM with Manual Choke (Part #1904).

Edelbrock's Annular Flow Booster technology brings superior fuel atomization to all dual-quad applications with the AVS2 500 CFM Carburetor 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. 

Installation Notes:

• Carbs #1903, #1904 and #19034, #19044 are calibrated for dual-quad applications only and need to be purchased together, one manual and one electric.

Specs:   

• Series: AVS2
  
• Recommended Use: For Dual-Quad Applications
• CFM Rating: 500 CFM
  
• Choke Type: Manual
  
• Barrel Quantity: 4 Barrel
  
• Flange Type: Square
  
• Material: Aluminum
  
• Bore Diameter: Primary Bore 1.44; Secondary Bore 1.6875
  
• Primary Jet Diameter: 0.095
  
• Secondary Jet Diameter: 0.077
  
• Metering Rod Size: .070 x .052 in
  
• Main Venturi Diameter: 1.19
  
• Body Height: 3.25
  
• Spring Force: 5" Hg (Orange)
  
• Gasket Or Seal Included: Yes

You can view and download the complete assembly instruction booklet here.