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

This is the Edelbrock Thunder Series AVS2 800 CFM carburetor, part number 1913, designed for high-horsepower small- and big-block engines. It's built with Edelbrock's Annular Flow Booster technology, which uses eight precisely placed orifices to refine fuel distribution. This setup helps eliminate flat spots and significantly improves throttle response in the low- to mid-RPM range, offering a feel close to electronic fuel injection without sacrificing top-end power.

The AVS2 carburetor is known for its ability to hold a tune, meaning your adjustments stay consistent for reliable performance. It's also unaffected by engine backfires because it doesn't use power valves that can blow out. For quick tuning, the metering rods and springs can be accessed and changed in seconds without needing to remove the carburetor or drain the fuel. The updated booster clusters are calibrated for today's fuels and octane levels, and the unique Qwik-Tune Secondary Air Valve allows for easy adjustment of the secondary circuit to match your specific application using simple hand tools.

This model features an electric choke for easier cold starts and a satin finish. The two-piece design makes internal adjustments, like float levels, straightforward without removing the carburetor. All AVS2 Series carburetors are designed, manufactured, assembled, and calibrated in the USA by Edelbrock.