Demon Fuel Systems SDA-750-MS Carburetor

Part Number
Screamin Demon Carburetor; 750 cfm; Mechanical Secondary; Down Leg Booster
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The most revealing signs of a carburetor company's standing are its reputation for innovation, its record of success, and how easy it is to deal with. When the Demon range of four-barrel modular carburetors first burst onto the scene in the late 1990's, it acquired a meteoric reputation for innovation. Immediately noticeable was its uniquely attractive appearance with beautifully contoured air entries and shapely fuel bowls. This coupled with its vast array of ground-breaking features set it apart from the competition.

BRAND: Demon Fuel Systems


  • Holley Performance Emission Code 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
  • Engineered And Calibrated For Better Drivability
  • Fuel Bowls Have Internal Baffling For Improved Fuel Slosh Control
  • Polished Die-Cast Aluminum Construction
  • Changeable Power Valve Restrictions For Precise Tuning
  • Fuel Bowls Have Dual Threaded Inlets On Each Side
  • Screamin Demon Carburetor
  • Engineered And Calibrated For Full Throttle Performance
  • New Throttle Lever w/Integrated Kick Down Options
  • Screamin Demon Carburetor; 750 cfm; Mechanical Secondary; Down Leg Booster;
  • Changeable Idle High Speed Air Bleed
  • Fuel Bowls Have Dual Sight Glass Windows
  • Secondary Fuel Bowls Incl. Notched Floated


Booster TypeDown Leg
EmissionWithout EGR
FlangeSquare Bore
Fuel InletDual
Fuel System TypeCarbureted
Fuel TypeGasoline
High Speed Air Bleed33
Idle Air Bleed Size70
Primary Main Jet74
Primary Power Valve4.5
Primary Pump Nozzle Size33;33
Secondary Main Jet84
Secondary TypeMechanical
Supercharged ApplicationNo
Throttle Bore1.688 in.
UsageRacing/Circle Track
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm -


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