Edelbrock 1804 Dual Quad 4 Barrel Carburetor, 500 CFM, Manual Choke

The Thunder Series' unique Qwik-Tune Secondary Air Valve allows for limitless calibration of the secondary circuit with simple hand tools while on your vehicle. This four barrel carb can be easily adjusted - in seconds - to suit your application...no extra parts required to achieve optimum performance.

Designed and calibrated for dual-quad applications such as the RPM Dual-Quad Air-Gap, Edelbrock C-26, F-28 and Street Tunnel Ram.

• Primary and secondary booster clusters offer the most accurate and up-to-date calibration available for today's fuels and octane levels
• Edelbrock carburetors bolt on and run right out of the box
• Float levels are factory set; adjustments are rarely needed
• Change jets, adjust floats & replace needles/seats without draining fuel or removing carb
• Two-piece design means no gaskets below the fuel level for leak-free operation
• Includes both timed and full vacuum ports for ignition advance
• Dual inlets

Edelbrock 500 CFM 4 Barrel Carburetor Installation Instructions (PDF)