850 CFM Mighty Aluminum Demon Carburetor

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Part
Demon MAD-850-MS
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Mechanical Secondaries
Down-Leg

Holley is proud to announce that the next generation of Mighty Demon™ carburetors have arrived. They are available in a full range of sizes and options for your street/strip car. They feature billet-aluminum metering blocks, billet aluminum baseplates, large capacity fuel bowls complete with dual sight glasses, dual threaded inlets on each side, and internal baffling to prevent fuel slosh when you are on the track. For high horsepower street and race engines, the aluminum Mighty Demon™ delivers more power and performance for your race car.

850 CFM Mighty Aluminum Demon Carburetor Features

  • All aluminum polished construction with billet 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
  • Secondary fuel bowls include notched floats and jet extensions to prevent fuel starvation during hard launches
  • Changeable idle, high-speed air bleeds & power valve restrictions for precise tuning
  • Billet Baseplate with Idle-Eze™ allows precision fine tuning of the idle speed resulting in a smoother transition from off-idle

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More Information
PartDemon MAD-850-MS
Manufacturer Part NumberMAD-850-MS
BrandDemon
Barrels4
Carburetor UsePerformance and Race
CFM850
ChokeNone
ConditionNew
Emission Code3
FinishShiny
Fuel InletDual
MaterialAluminum
ModelMighty Demon
Part TypeCarburetor
SecondariesMechanical
Throttle Bore1.750 inch
Typeproduct

Cfm
850
Fuel
Gasoline
Choke
None
Model
Mighty Demon
Finish
Shiny
Barrels
4
Booster
Down Leg
Material
Aluminum
Condition
New
Fuel Inlet
Dual
Marine Use
No
Secondaries
Mechanical
Product Type
Carburetor
Emission Code
3
Throttle Bore
1.750 inch
Venturii Size
1.560 inch
Carburetor Use
Performance and Race
Primary Main Jet
86
Primary Pump Cam
Pink
Secondary Main Jet
90
Secondary Pump Cam
Pink
Idle Air Bleed Size
73; 73
Primary Power Valve
4.5
High Speed Air Bleed
33;33
Needle And Seat Size
120;120
Idle Feed Restriction
36;36
Primary Pump Arm Size
30cc
Secondary Pump Arm Size
30cc
Primary Pump Nozzle Size
33
Supercharged Application
No
Secondary Pump Nozzle Size
33

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