650CFM AVS2 Carburetor w/Annular Boosters

The Edelbrock 650 CFM AVS2 Carburetor with Annular Boosters is a four-barrel, square-bore fuel delivery system engineered for street and performance applications requiring balanced air-fuel mixture control. Built from aluminum with a tumble-polished finish, this carburetor delivers 650 cubic feet per minute of airflow and features mechanical secondary activation and a manual choke, making it suited for carbureted engine platforms where consistent fuel metering and ease of tuning are priorities.

The AVS2 design incorporates Edelbrock's annular booster technology, which improves fuel atomization and distribution across the primary and secondary circuits. The single-inlet configuration simplifies fuel line routing on compact engine bays. The carburetor's tumble-polished aluminum construction resists corrosion while maintaining the aesthetic finish common on visible engine components. Manual choke operation allows drivers to manage cold-start and warm-up enrichment without reliance on electric controls, reducing complexity and cost in restoration or custom build scenarios.

This carburetor is sized for street engines and mild performance builds where 650 CFM provides adequate fuel supply without oversizing. The mechanical secondary design responds to engine load through vacuum or linkage actuation, making it responsive to acceleration demands. Users upgrading from smaller carburetors or rebuilding vintage platforms appreciate the Edelbrock AVS2 series for straightforward adjustment procedures and wide tuning range. The carburetor weighs 8.81 pounds and measures 7.35 × 6.6 × 13.55 inches, fitting standard engine bay dimensions for most conventional setups.