850 CFM Mighty Demon Carburetor

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Demon MAD-850-BT

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.

  • Clear Dichromate finish for good looks and corrosion protection
  • Designed for well-prepared 425 - 540 cid engines
  • Calibrated to work with turbocharged and centrifically supercharged applications
  • Contoured venturii inlet offers balanced airflow for increased horsepower
  • Mechanical secondaries for awesome tire turning performance
  • Dual accelerator pumps for additional fuel under initial acceleration
  • Screw in air bleeds for precision tuning capabilities
  • Screw in idle feed restrictors for precise idle tunability
  • Billet Metering Blocks for exceptional fuel metering capacity
  • 4 corner idle allows you to precisely control your idle system
  • Billet Baseplate with Idle-Eze™ allows precision fine tuning of the idle speed resulting in a smoother transition from off-idle
  • Large capacity float bowls eliminates fuel starvation
  • Large glass float-level sight windows for easy and safe fuel level adjustments
  • Dual feed fuel inlets for constant high volume fuel delivery
  • “Quik Release” non-stick gaskets for easy jet changes
More Information
PartDemon MAD-850-BT
Manufacturer Part NumberMAD-850-BT
UPC792898400993
BrandDemon
Barrels4
Carburetor UsePerformance and Race
CFM850
ChokeNone
ConditionNew
Emission Code3
FinishClear Dichromate
Fuel InletDual
MaterialAluminum
ModelMighty Demon
Part TypeCarburetor
SecondariesMechanical
Throttle Bore1.750 inch
Typeproduct
Vacuum Ports1 timed (spark) port 1 full and 1 PCV port
Item ReturnsThis item can be returned

Barrels4
BoosterAnnular
BrandDemon
Carburetor UsePerformance and Race
CFM850
ChokeNone
ConditionNew
Emission Code3
FinishClear Dichromate
FuelGasoline
Fuel InletDual
Marine UseNo
MaterialAluminum
ModelMighty Demon
Product TypeCarburetor
SecondariesMechanical
Supercharged ApplicationYes
Throttle Bore1.750 inch
Vacuum Ports1 timed (spark) port, 1 full, and 1 PCV port
Venturii Size1.560 inch
WarningCalifornia Proposition 65
WarrantyLimited 90 Day

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