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. It can be easily adjusted, in seconds, to suit your application - no extra parts required to achieve optimum performance.
Designed and calibrated for small cubic-inch engines such as 305 c.i.d and smaller Chevrolet; 302 c.i.d. and smaller Ford. Match with an Edelbrock Performer or Performer EPS manifold or other brands of similar design.
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
Edelbrock 500 CFM 4 Barrel Carburetor Installation Instructions (PDF)
- Metering Jets - Primary .86, Secondary .095
- Primary Rod - .065 x .052
- Step-Up Spring - orange (5" Hg)