# Edelbrock Carburetor Thunder Series 4-Barrel 800 CFM Manual Choke Calibration Satin Finish

Edelbrock's Annular Flow Booster technology brings superior fuel atomization to all high-horsepower small- and big-block engines with the AVS2 800 CFM Manual Choke Carburetor #1912 that is specially calibrated to make power. 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 without sacrificing 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 800 CFM #1912 comes with a manual (#1912) or electric (#1913) choke in satin or chrome-like EnduraShine finish. All AVS2 Series carburetors, like Edelbrock's popular Performer Series and Thunder Series AVS, are designed, manufactured, assembled and calibrated by Edelbrock in the USA.

-   Fuel Distribution

## Details

- **Price:** 776.18 CAD
- **Vendor:** Edelbrock
- **Type:** Carburetors

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 776.18 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Unmounted
- Photo - out of package
- User 3
- User 1
- Photo - Unmounted
- Photo - out of package
- Photo - Unmounted
- Photo - out of package

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/edelbrock-carburetor-thunder-series-4-barrel-800-cfm-manual-choke-calibration-satin-finish)
> Updated: 2026-08-18