The Edelbrock #1905 AVS2 Series 650 cfm carburetor is the next generation in Edelbrock carburetors. Designed and calibrated for optimum street performance in small-block and some big-block engines.; Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.; Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.; The Edelbrock AVS2 Series #1905 is a satin-finished carburetor with manual choke that is designed and calibrated for optimum street performance in engines that require 650 CFM of air-fuel flow.; The AVS2 is a perfect four-barrel replacement or upgrade that features annular flow primary boosters with a new calibration for improved off-idle and cruising performance.; The annular flow booster design delivers improved fuel atomization to eliminate flat spots that may be encountered as the carburetor transitions from idle to full throttle.; Each annular flow booster features eight equally spaced orifices to improve fuel metering from idle to the main circuit.; The improved flow metering makes this carburetor ideal for use with a wide variety of small- and big-block engines with either dual- or single-plane intake manifolds.