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Demon

Demon RDA-650-MS 650 CFM Road Demon Carburetor

Part # RDA-650-MS Be the first to write a review

Mechanical Secondaries Down Leg Boosters

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Demon RDA-650-MS 650 CFM Road Demon Carburetor

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All new for Demon, the new aluminum Road Demon carburetors are showing a new lighter, sleeker look and calibrated for Street Rods and mildly modified Street Machines and light trucks, the Road Demon™ is an impressive performer. With a remarkably smooth choke tower design and patented air entries, the Road Demon™ offers extremely smooth operation with strong throttle response. The Road Demon™ has the standard Demon carburetor features: Cast metering-blocks with adjustable jets and four-corner idle, plus large capacity fuel bowls with patented sight glasses for tuning ease. Available in 650-850 cfm models, the Road Demon™ is perfect for all engine sizes. The Road Demon™ targets mild performance engines from 302 to 460 cid, and rated at 250-500 horsepower. Road Demons come in mechanical and vacuum secondary models which makes them ideal for daily drivers as well as weekend cruising for a wide range of vehicles

Features:

  • All aluminum polished construction with die-cast metering blocks and base plate (Now 40% lighter than the original Demons!)
  • Fuel bowls and main body have been redesigned for a sleeker, more stylish appearance
  • Completely re-engineered and re-calibrated for better drivability and full throttle performance
  • Re-designed throttle lever with integrated Ford A/T, 700-R4, and Chrysler kick down options
  • Fuel bowls now have dual threaded inlets on each side, dual sight glass windows, and internal baffling for improved fuel slosh control
  • Changeable idle, high-speed air bleeds & power valve restrictions for precise tuning
  • New simple part numbering system: Start with RDA (Road Demon) Add the carburetor cfm size (650, 750, or 850) and then add the model suffix; MS (Mechanical Secondaries); VS (Vacuum Secondaries); AN (Annular Discharge Boosters)
Brand Demon
Emission Code3
Product TypeCarburetors
UPC792898400832
Manufacturer Part NumberRDA-650-MS
Part NumberRDA-650-MS
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Instructions for Part# RDA-650-MS
This model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5-3/16 in. x 5-5/8 in. bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor. Similar to the Mr. Gasket #1932.

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      *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

      Some parts are not legal for use in California or other states with similar regulations.