850 CFM Speed Demon Carburetor

Contact for Price
Out of Stock - Call to check
Part
Demon SPD-850-MS

The next generation of Speed Demon™ carburetors have arrived. The new aluminum Speed Demon™ series is the most formidable performance street carburetor available today and it's 40% lighter than the original. It features the most advanced design manufacturing processes that provides street enthusiasts with racing carburetor technology in a very drivable package. The Speed Demon™ line offers a wide range of sizes with vacuum and mechanical secondary designs. Across the range of sizes, from 650 cfm to 850 cfm, the Speed Demons deliver balanced, high-velocity airflow and exceptional fuel metering capacity to match the fuel requirements most street engines. A Speed Demon™ carburetor is ideal for muscle cars, stock rebuilds, mild performance applications, and crate motors. They are designed for mild engines from 302-427 cid with cam profiles between 220 and 240 degrees duration at 0.050".

  • 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
  • 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
  • New simple part numbering system: Start with SPD (Speed Demon) Add the carburetor cfm size (650, 750, or 850) and then add the model suffix; MS (Mechanical Secondaries); VS (Vacuum Secondaries); AN (Annular Discharge Boosters)
More Information
PartDemon SPD-850-MS
Manufacturer Part NumberSPD-850-MS
UPC792898400979
BrandDemon
ColorShiny
Barrels4
Billet ColorShiny
Carburetor UsePerformance and Race
CFM850
ChokeElectric
Circuit2
ConditionNew
Emission Code3
FinishShiny
Fuel InletDual
Fuel SystemCarbureted
MaterialAluminum
ModelSpeed Demon
Part TypeCarburetor
SecondariesMechanical
Throttle Bore1.688 inch
Typeproduct
Item ReturnsThis item can be returned

Barrels4
Billet ColorShiny
BoosterDown Leg
BrandDemon
Carburetor UsePerformance and Race
CFM850
ChokeElectric
Circuit2
ConditionNew
Emission Code3
FinishShiny
FuelGasoline
Fuel InletDual
Fuel SystemCarbureted
High Speed Air Bleed31
Idle Air Bleed Size70
Marine UseNo
MaterialAluminum
ModelSpeed Demon
Primary Main Jet70
Primary Power Valve6.5
Primary Pump Nozzle Size31;31
Product TypeCarburetor
SecondariesMechanical
Secondary Main Jet76
Supercharged ApplicationNo
Throttle Bore1.688 inch
WarningCalifornia Proposition 65
WarrantyLimited 90 Day

Write Your Own Review
You're reviewing:850 CFM Speed Demon Carburetor
Your Rating
Related Products
750 CFM Speed Demon Carburetor
750 CFM Speed Demon Carburetor
Contact for Price
650 CFM Speed Demon Carburetor
650 CFM Speed Demon Carburetor
Contact for Price
750 CFM Speed Demon Carburetor
750 CFM Speed Demon Carburetor
Contact for Price
850 CFM Speed Demon Carburetor
850 CFM Speed Demon Carburetor
Contact for Price
750 CFM Speed Demon Carburetor
750 CFM Speed Demon Carburetor
Contact for Price
850 CFM Speed Demon Carburetor
850 CFM Speed Demon Carburetor
Contact for Price
650 CFM Speed Demon Carburetor
650 CFM Speed Demon Carburetor
Contact for Price
650 CFM Speed Demon Carburetor
650 CFM Speed Demon Carburetor
Contact for Price
People Also Viewed
Holley EFI Ford Coyote Ti-VCT Sub Harness (2011-2012)
Holley EFI Ford Coyote Ti-VCT Sub Harness (2011-2012)
$435.99
AF64-2008 - Billet EFI Fuel Rail Kit suit Holden 5.0L EFI - Blue
AF64-2008 - Billet EFI Fuel Rail Kit suit Holden 5.0L EFI - Blue
$228.66
AF557-06-08 - 550 Series Cutter Style Swivel 30° Stepped Hose End -8AN to -6 Hose
AF557-06-08 - 550 Series Cutter Style Swivel 30° Stepped Hose End -8AN to -6 Hose
$55.83
AF583-20BLK - 90° Full Flow Female Coupler -20AN
AF583-20BLK - 90° Full Flow Female Coupler -20AN
$100.19
AF916-08-08 - Male NPT to Female AN Straight Fitting 1/2'' to -8AN
AF916-08-08 - Male NPT to Female AN Straight Fitting 1/2'' to -8AN
$18.46
AF950-10-06S - AN Flare Reducer Female/Male -10AN to -6AN
AF950-10-06S - AN Flare Reducer Female/Male -10AN to -6AN
$20.79
AF90-1000BLK - Aluminium Intercooler 600x300x76mm with 3'' Inlet/Outlets - Black
AF90-1000BLK - Aluminium Intercooler 600x300x76mm with 3'' Inlet/Outlets - Black
$280.61
Injector Sub Harness Connector
Injector Sub Harness Connector
$85.42
AF529-08-06 - 90° Male NPT Full Flow Swivel Hose End 3/8'' to -8AN
AF529-08-06 - 90° Male NPT Full Flow Swivel Hose End 3/8'' to -8AN
$46.48
AF528-08-06 - 45° Male NPT Full Flow Swivel Hose End 3/8'' to -8AN
AF528-08-06 - 45° Male NPT Full Flow Swivel Hose End 3/8'' to -8AN
$46.48
Copyright © 2020-present Race Car Engineering. All rights reserved.