Edelbrock 1906 AVS2 650 CFM Carburetor Satin Finish with Electric Choke — Annular Boosters, Direct-Fit V8 Replacement

The Edelbrock 1906 AVS2 is a satin-finish 4-barrel, 650 CFM carburetor with an electric choke built for improved street performance and smooth throttle transition.

This AVS2 model from Edelbrock is engineered as a direct-fit replacement or upgrade for small- and big-block V8 engines that demand a 650 CFM flow. It combines annular flow primary boosters, refined calibration, and a dependable electric choke to reduce flat spots during transitions and deliver more consistent cruising and off-idle response. The unit arrives ready to mount with factory-style vacuum ports and a polished satin body that resists glare while complementing engine-bay presentation.

How does the AVS2 1906 improve throttle response and eliminate flat spots?

The AVS2 uses annular flow boosters in the primary circuit to improve fuel atomization as the carburetor moves from idle toward the main circuit. These boosters distribute fuel through multiple orifices for steadier metering, reducing hesitation during throttle openings. The updated calibration further refines off-idle and cruising behavior for everyday driving conditions.

• Annular boosters with eight evenly spaced orifices for smoother fuel delivery
• Calibration tuned for better off-idle and cruise performance
• Improved atomization reduces flat spots at transition points

What fitment and engine setups work best with this Edelbrock 1906?

The 650 CFM rating and tune make this carburetor versatile for both small- and big-block V8s running single- or dual-plane intake manifolds. It pairs especially well with a range of Edelbrock manifolds but will also work with comparable aftermarket pieces. Installers should confirm throttle linkage geometry and use supplied vacuum ports for ignition advance or accessories.

• Ideal for small- and big-block V8 engines requiring 650 CFM
• Compatible with single- or dual-plane intake manifolds
• Works with Edelbrock Performer, RPM Air-Gap, Performer RPM, Torker II, and similar manifolds

What hardware and tuning components are included, and what else might I need?

The Edelbrock 1906 ships with primary and secondary metering jets and metering rods pre-installed, plus a step-up spring and an electric choke assembly. It also provides both timed and full-vacuum ports to accommodate common ignition advance setups. For secure installation on some intakes you may want Edelbrock carburetor stud kits or specific gaskets sold separately.

• Includes .101 primary and .098 secondary metering jets
• Comes with .070 x .037 metering rods and orange (5" Hg) step-up spring
• Timed and full vacuum ports available for ignition advance
• Optional: Carburetor stud kits #8008 or #8024 and gaskets for mounting

How does the electric choke affect cold starting and driveability?

The integrated electric choke simplifies cold starts by automatically enriching the mixture until the engine reaches operating temperature. That reduces the need for manual choke adjustments and helps maintain consistent idle during warm-up. Once warm, the choke fully opens to restore normal air-fuel flow for cruising and performance.

• Automatic enrichment during cold starts for easier starting
• Reduces manual choke fiddling and stalling during warm-up
• Opens fully at operating temperature for normal driveability

Who is this for: The Edelbrock 1906 AVS2 650 CFM carburetor is aimed at street-driven classic cars, musclecars, and custom builds where reliable mid-range response and smooth throttle transitions matter. It's a strong choice for owners seeking a factory-style replacement with modern calibration, or enthusiasts updating to an annular-booster design without sacrificing compatibility with common Edelbrock and aftermarket intake manifolds.

• Features: Satin Finish; 4 Barrel; Annular Booster Type; Electric Choke Type; 650 CFM Maximum Flow Rating