Part Number
SPD-850-MS
$795.93
Out of stock
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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:
Barrel | Four |
Billet Color | Shiny |
Booster Type | Down Leg |
CFM | 850 |
Choke | Electric |
Circuit | 2 |
Emission | Without EGR |
Finish | Shiny |
Flange | Square Bore |
Fuel Inlet | Dual |
Fuel System Type | Carbureted |
Fuel Type | Gasoline |
High Speed Air Bleed | 31 |
Idle Air Bleed Size | 70 |
Material | Aluminum |
Primary Main Jet | 70 |
Primary Power Valve | 6.5 |
Primary Pump Nozzle Size | 31;31 |
Secondary Main Jet | 76 |
Secondary Type | Mechanical |
Supercharged Application | No |
Throttle Bore | 1.688 in. |
Type | Automotive |
Usage | Racing/Circle Track |
WARNING CA Proposition 65 | Yes |
WARNING CA Proposition 65 Message | WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
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