Demon Fuel Systems SPD-850-MS Carburetor

Part Number
SPD-850-MS
Speed Demon Carburetor; 850 cfm; Mechanical Secondary; Down Leg Booster; For 302-427 CID Engines w/Cam Profiles Between 220-240 Deg. Duration At 0.050 in.
$795.93
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The Speed Demon series is the most formidable performance street carburetor available today. It features the most advanced design manufacturing processed that provides street enthusiasts with racing carburetor technology in a very driveable package. The Speed Demon line offers a wide range of sizes and in VE Series or twin squirter designs. Across the range of sizes from 575 cfm to 850 cfm the Speed Demons deliver balanced/high velocity airflow/exceptional fuel metering capacity to match the fuel requirements of most street engines. A Speed Demon carburetor is ideal for muscle cars/stock rebuilds/tow trucks/mild performance applications/crate motors. They are designed for engines with cam profiles between 220 and 240 degrees duration at 0.050 in.


BRAND: Demon Fuel Systems




FEATURES:


  • All Aluminum Polished Construction
  • Billet Baseplate Allows Precision Fine Tuning Of Idle Speed
  • Fuel Bowls and Main Body Have A Sleeker More Style Appearance
  • 850 Speed Demon-Mech Sec-Down-Leg (Designed for mild engines from 302-427 cid with cam profiles between 220 and 240 degrees duration at 0.050in.)
  • Redesigned Throttle Lever w/Integrated Kick Downs Options
  • With Billet Metering Blocks And Base Plates
  • SPEED DEMON; 850 CFM-MS-DL
  • Speed Demon Carburetor
  • Changeable Power Valve Restrictions For Precise Tuning
  • Complete Reengineered and Re-Calibrated
  • 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
  • Speed Demon Carburetor; 850 cfm; Mechanical Secondary; Down Leg Booster; For 302-427 CID Engines w/Cam Profiles Between 220-240 Deg. Duration At 0.050 in.;
  • Changeable Idle High Speed Air Bleeds
  • Fuel Bowls Now Have Dual Threaded Inlets On Each Side
  • Secondary Fuel Bowls Include Notched Floats


SPECIFICS:


BarrelFour
Billet ColorShiny
Booster TypeDown Leg
CFM850
ChokeElectric
Circuit2
EmissionWithout EGR
FinishShiny
FlangeSquare Bore
Fuel InletDual
Fuel System TypeCarbureted
Fuel TypeGasoline
High Speed Air Bleed31
Idle Air Bleed Size70
MaterialAluminum
Primary Main Jet70
Primary Power Valve6.5
Primary Pump Nozzle Size31;31
Secondary Main Jet76
Secondary TypeMechanical
Supercharged ApplicationNo
Throttle Bore1.688 in.
TypeAutomotive
UsageRacing/Circle Track
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov



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