Speed Demon Carburetor; 850 cfm; Demon 4150 Vacuum Secondary; Down Leg Booster; For 302-427 CID Engines w/Cam Profiles Between 220-240 Deg. Duration At 0.050 in.;

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 its 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 Plates
• Fuel Bowls And Main Body Have A Sleeker More Style Appearance
• Complete Reengineered And Re-Calibrated
• Redesigned Throttle Lever W/Integrated Kick Downs Options
• Fuel Bowls Now Have Dual Threaded Inlets On Each Side
• Secondary Fuel Bowls Include Notched Floats
• Changeable Idle High Speed Air Bleeds
• Changeable Power Valve Restrictions For Precise Tuning
• Billet Baseplate Allows Precision Fine Tuning Of Idle Speed

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:	28
Idle Air Bleed Size:	70
Material:	Aluminum
Primary Main Jet:	68
Primary Power Valve:	6.5
Primary Pump Nozzle Size:	31
Secondary Main Jet:	78
Secondary Type:	Vacuum
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.P65Warnings.ca.gov