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850 CFM Aluminum Screamin' Demon Carburetor

Mechanical Secondaries Down Leg

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CFM

PART# SDA-850-MS

$581.95   Suggested Retail
$471.56   Holleydays Price
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Overview

Screamin’ Demons are the latest development in the evolving family of Demon performance carburetors. Screamin’ Demons were designed with the weekend racer in mind. They are available in 650-850 cfm mechanical secondary models, as well as a 750 cfm vacuum secondary model. Screamin’ Demons feature lightweight die-cast aluminum construction, 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. Engineered and calibrated for better drivability and full throttle performance, Screamin’ Demons include four corner idle, changeable idle and high-speed air bleeds with all the tunability that you would find from more expensive carburetors in the market.

Features:

  • Polished die-cast aluminum construction
  • Engineered and calibrated for better drivability and full throttle performance
  • New throttle lever with integrated Ford A/T, 700-R4, and Chrysler kick down options
  • Fuel bowls 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

Specs

Barrels4
BoosterDown Leg
BrandDemon
CFM850
ChokeNone
Circuit2
Emission Code3
FinishShiny
FuelGasoline
Fuel InletDual
Fuel SystemCarbureted
High Speed Air Bleed33
Idle Air Bleed Size70
MaterialAluminum
ModelScreamin' Demon 4150
Primary Main Jet82
Primary Power Valve4.5
Primary Pump Nozzle Size33;33
Product TypeCarburetor
SecondariesMechanical
Secondary Main Jet93
Supercharged ApplicationNo
Throttle Bore1.75 inch
Part NumberSDA-850-MS

Tech Resources

Emissions

This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing 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

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

*Free Shipping & Handling only offered to the contiguous US on orders over $100.

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

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