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650 CFM Speed Demon Carburetor

Vacuum secondaries Electric choke

PART# 1282020VE

Not Available Online

Overview

The Speed Demon™ series is the most formidable performance street carburetor available today. 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 and in VE–series (vacuum secondaries, electric choke) or twin–squirter (mechanical secondaries) designs. Across the range of sizes, from 575 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, tow trucks, mild performance applications and crate motors. They are designed for engines with cam profiles between 220 and 240 degrees duration at 0.050".

Features:

  • Clear Dichromate finish for good looks and corrosion protection
  • Calibrated for stock and mild performance 283 - 390 cid V8 engines
  • Vacuum secondaries allow use on a wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondary throttle plates
  • Quick change vacuum secondary cover allows you to tune for performance or fuel economy
  • Billet Metering Blocks for exceptional fuel metering capacity
  • 4 corner idle allows you to precisely control your idle system
  • Billet Baseplate with Idle-Eze™ allows precision fine tuning of the idle speed resulting in a smoother transition from off-idle
  • Large capacity float bowls eliminates fuel starvation
  • Large glass float-level sight windows for easy and safe fuel level adjustments
  • Dual feed fuel inlets for constant high volume fuel delivery
  • “Quik Release” non-stick gaskets for easy jet changes

Specs

Barrels4
BoosterAnnular
BrandDemon
CFM650
ChokeElectric
Emission Code3
FinishClear Dichromate
FuelGasoline
Fuel InletDual
MaterialZinc
ModelDemon 4150 Vacuum Secondary
Product TypeCarburetor
SecondariesVacuum
Supercharged ApplicationNo
Throttle Bore1.688 inch
Vacuum Ports1 timed (spark) port, 1 full, and 1 PCV port
Venturii Size1.280 inch
WarningCalifornia Proposition 65

Tech Resources

Service Parts

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.

WARNING FOR 1282020VE: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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

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