Edelbrock 650 CFM Thunder AVS Annular Carb w/ Electronic Choke

The annular flow primary boosters on this Edelbrock AVS2 carburetor, each with eight equally spaced orifices, are a key design choice that matters for street performance. This setup is designed to improve fuel atomization, which helps eliminate those frustrating flat spots you can get when transitioning from idle to full throttle. It’s a well-built four-barrel carburetor, rated at 650 CFM, and comes with an electric choke, making it a solid choice for many small-block and some big-block engines that need a reliable fuel delivery upgrade.

This carburetor is calibrated for optimum street performance and works well with both dual- and single-plane intake manifolds, including popular Edelbrock Performer, RPM, and Air-Gap styles, as well as similar designs from other brands. You’ll find it includes both timed and full vacuum ports for ignition advance, which is important for proper engine timing. The kit comes with .101 primary and .098 secondary metering jets, an orange step-up spring (5" Hg), and .070 x .037 metering rods, giving you a good starting point for tuning. If you're rebuilding the fuel system on a classic like a 1980 Chevrolet C10 or a 1985 Chevrolet Camaro, this carburetor offers a significant improvement over stock.

For installation, consider using Edelbrock's Carburetor Stud Kits (#8008 or #8024) if needed. While this carburetor is designed for excellent street drivability and improved fuel metering, please note it is not CARB approved and cannot be shipped to California. It’s a popular choice for those looking to replace an old carburetor or seeking a noticeable boost in their engine's responsiveness.