Edelbrock 1904 AVS2 500 CFM Carburetor Manual Choke Dual-Quad

The Edelbrock 1904 AVS2 500 CFM Carburetor features revolutionary Annular Flow Booster technology that delivers superior fuel atomization and near EFI-like drivability for dual-quad applications. Specially calibrated for engines running two four-barrel carburetors, this manual choke model provides exceptional throttle response and eliminates flat spots across the entire RPM range.

Annular Flow Booster Technology:

• Eight equally spaced orifices in the booster rings replace traditional down-leg boosters for refined fuel distribution
• Superior fuel atomization eliminates flat spots and improves low- to mid-RPM throttle response
• Maintains top-end power output that Edelbrock is renowned for

Easy Tuning and Maintenance:

• Two-piece design allows float level adjustments and component replacement without draining fuel or removing carburetor
• Metering rods and springs can be changed in seconds for fast part-throttle tuning
• Qwik-Tune Secondary Air Valve enables limitless calibration with simple hand tools
• No power valves to blow out—unaffected by engine backfires

Advanced Calibration:

• Updated primary and secondary booster clusters optimized for modern fuels and octane levels
• Holds tune better than competitive carburetors—adjustments stay consistent
• Specially calibrated for dual four-barrel applications

The AVS2 500 CFM #1904 comes with manual choke in satin finish. Designed, manufactured, assembled, and calibrated by Edelbrock in the USA, this carburetor delivers reliability and performance for high-performance dual-quad setups.