850 CFM Road Demon Carburetor

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Demon RDA-850-MS

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

  • 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)
More Information
PartDemon RDA-850-MS
Manufacturer Part NumberRDA-850-MS
UPC792898400894
BrandDemon
ColorShiny
Barrels4
Billet ColorShiny
Carburetor UseStreet
CFM850
ChokeElectric
Circuit2
ConditionNew
Emission Code3
FinishShiny
Fuel InletDual
Fuel SystemCarbureted
MaterialAluminum
ModelRoad Demon
Part TypeCarburetor
SecondariesMechanical
Throttle Bore1.75
Typeproduct
Item ReturnsThis item can be returned

Barrels4
Billet ColorShiny
BoosterDown Leg
BrandDemon
Carburetor UseStreet
CFM850
ChokeElectric
Circuit2
ConditionNew
Emission Code3
FinishShiny
FuelGasoline
Fuel InletDual
Fuel SystemCarbureted
High Speed Air Bleed33
Idle Air Bleed Size73
Marine UseNo
MaterialAluminum
ModelRoad Demon
Primary Main Jet76
Primary Power Valve6.5
Primary Pump Nozzle Size33;33
Product TypeCarburetor
SecondariesMechanical
Secondary Main Jet84
Supercharged ApplicationNo
Throttle Bore1.75
WarningCalifornia Proposition 65
WarrantyLimited 90 Day

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