Product Summary

Universal Fit, 4-Barrel Carburetor Barrels, 625 CFM CFM

  • The dual mounting bolt pattern will fit any street 4bbl intake (square flange or spread bore)
  • Aerospace Composite fuel bowl offers significant heat insulation benefits over aluminum fuel bowl
  • Features 2 stage metering rods control easily accessible without carburetor disassembly or removal
  • An integrated fuel bowl/main body design with gasket above fuel level and no plugged passages to eliminate all potential leak paths
  • A small 1-3/8" primary throttle bores combined with proven Triple-Stack™ boosters deliver amazingly crisp throttle response and drivability
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Key Specs

Carburetor Barrels4-Barrel
Fuel TypeGasoline
Choke TypeElectric
CFM Range600-699 CFM
CFM625 CFM
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Need To Know

Quick and Easy Returns

Return Policy

Demon Carburetion 1901 Details

WICKED POWER! The ALL NEW Street Demon™ redefines the street carburetor with clean looks and ease of use! The Street Demon offers enthusiasts a straightforward four barrel carburetor designed to deliver a stable idle, amazingly crisp throttle response and smooth performance. Its optimized calibration and dual mounting pattern make it Run–Ready™ for a large variety of engines and vehicles!

  • 625 CFM airflow - ideal for use on most stock to mildly modified V8s
  • Dual mounting bolt pattern - fits any street 4bbl intake (square flange or spread bore)
  • Electric Choke Management means easy cold starts
  • Single fuel inlet for simple installation
  • Aerospace Composite fuel bowl offers significant heat insulation benefits over aluminum fuel bowl - keeps fuel up to 20° cooler for optimum performance with modern fuels
  • Integrated fuel bowl/main body design with gasket above fuel level and no plugged passages to eliminate all potential leak paths
  • Small 1-3/8" primary throttle bores combined with proven Triple-Stack™ boosters deliver amazingly crisp throttle reponse and drivability, superior fuel atomization and improved fuel economy
  • Goggle Valve Secondary (GVS™) throttle plate delivers over twice the aire flow of the primary bores for power you can hear and feel
  • GVS™ makes total air flow 625 CFM while maintaining the crisp throttle response delivered by small primary bores
  • Secondary air valve control - torsion spring valve control/adjustment permits seamless primary to secondary throttle response regardless of the throttle opening rate (unique contoured profile developed for better cylinder to cylinder fuel distribution)
  • Smooth styling - patented timeless design fits modern as well as traditional themed vehicles (Patent No.: US D648,746 S)
  • Developed from the ground up with great looks and ease of use in mind
  • Easy to clean and maintain
  • One-piece air horn assembly
  • 2 Stage metering rods control easily accessible without carburetor disassembly or removal
  • 4 optional vacuum step-up springs available to dial in hi-end performance
  • Optional sets of metering rods available to refine calibration
  • Multiple primary and secondary main jet orifice sizes available
  • Patent pending mechanical design
  • Integrated 700R4/200R4 transmission kickdown cable mounting location for proper shifts
  • Ford A/T kickdown(does not work with AOD transmissions)
  • Available TPS kit allows use with 4L60 and 4L80 transmissions

Charts

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Demon Carburetion 1901 Specifications

KEY SPECS
MFG. Part #1901
BrandDemon Carburetion
Carburetor Barrels4-Barrel
Fuel TypeGasoline
Choke TypeElectric
CFM Range600-699 CFM
CFM625 CFM
Carburetor Flange Type4-Barrel Square Bore
FinishShiny
Material TypeAluminum
ColorNatural
Secondary TypeAir Valve
Fuel Inlet TypeSingle
Gasket(s) IncludedYes
New or RemanufacturedNew
Throttle Linkage TypeUniversal
Supercharged ApplicationNo
GENERAL
Bolt Hole Pattern5.160" x 5.625"
GTIN Code792898400061
Sold in QuantityEach

Ratings & Reviews

4.9

22 Reviews

Overall Assessment

Customers highly appreciate the product for its fit, performance, and ease of installation. They noted that it works great right out of the box, often requiring few or minor adjustments. The carburetor has proven to be a dependable and efficient replacement for other brands, providing smooth idle, power, and less hesitation. Users fitted it on various car models and it consistently delivered high performance. Despite some individual concerns with aspects like choke flap and throttle cable hole, overall satisfaction is high and many would buy again. The product offers a notable upgrade and is frequently recommended by customers for its superb features and performance.

4.9

22 reviews

5

20

4

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Most Liked Positive Review

5.0

Easy bolt on - very minor setup - Demon carbs are great!!!

carb. replacement on a 428 Ford engine in a 1961 Ford Starliner.

Most Liked Negative Review

3.0

Choke Plate Sticky, Otherwise, Not Bad

I purchased this carburetor after reading many different reviews stating it was a great bolt-on piece requiring minimal adjustment. I installed the carb on a Mopar 360. It started and idled almost perfectly. After a run down the road I noticed right away that the secondary required adjustment. The manual stated it wouldn't take but a quarter or half turn. I ended up going about 2 1/2 turns before it would transition properly without stumbling on its face. After the car sat overnight I noticed that it wouldn't start. After popping the breather off I noticed that the choke flap was stuck closed. It took considerable force to break it loose again. This has happened two more times since I've installed it. I haven't had a chance to remove the flap and remove a small amount of material, or mess with an exchange. Another small issue that I noticed is that the hole for the throttle cable is not as far away from throttle plate axis as a Holley carburetor. This makes the throttle throw shorter, and thus the pedal throw is shorter. Now the throttle pedal only goes about 3/4 of the way to the floor when the carb butterflies are opened all the way. This is using the stock cable and pedal assembly on an E-body Mopar. I may have to modify the original pedal assembly, or live with the short throw. An increased distance from the throttle hole to the butterfly axis, like a Holley, would have solved this problem. I'm pretty satisfied with the smooth idle, and the way the carburetor performed after adjustment. I would have given it more stars if I didn't have the choke flap and throttle cable hole issues.

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Would buy again.

5.0

a month ago

tomeboy

Denton, NE

Verified

Looks and fits great, pretty much ready to run right out of box and no leaks.

Would Recommend

Yes

5.0

a year ago

Sbc guru

North georgia

Verified

I'm using on sbc that runs constant 3200 rpm on hwy and doing great Had to lòsen secondary air since low vacuum but great carb

Would Recommend

Great

5.0

2 years ago

AJ

Omaha, NE

Verified

Perfect for our early Bronco's with 5.0 roller motors

Would Recommend

i would recommend the product to many.

5.0

5 years ago

mike

omaha ne

Verified

it is on a 1985 chevy s10 v8 350.

Would Recommend

Nice Carb. looks good and fit perfect.

5.0

5 years ago

Dave

Minnesota

Verified

Mounted to a SBC 350, ran perfect right out of the box!

Would Recommend

Highly recommend!

5.0

6 years ago

joilstoils

Fitchburg, MA

Verified

Super carb, best ive owmed minor adjustments only...

Would Recommend

Great carb , easy set up

5.0

6 years ago

Dinky

Clinton s.c.

Verified

Great carb , easy set up and installation, perfect for mild small block builds

Would Recommend

Scream'n Demon

5.0

7 years ago

23' T-Bucket

Odessa, Texas

Verified

Perfect out of the box

Would Recommend

I would buy this product again

5.0

7 years ago

Picky plumber

Shenandoah iowa

Verified

Installed on a 351w. Easy to adjust and run.

Would Recommend

Love this product

5.0

7 years ago

gerald

Manitoba

Verified

Love demon carbs but should have got extra fuel line to hook it up

Would Recommend

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Showing 10 of 22 reviews

Questions & Answers

10 Questions • 12 Answers

Is there a bracket kit so I can use this with a ford AOD transmission

by Nick

• 4 years ago

1 answer

would this work on a stock 283 chevy

by 67 step

• 8 years ago

2 answers

will this work at 6500 ft altitude out of the box on 350 chevy ?

by CL

• 9 years ago

1 answer

Can you use with a TH 350?

by JJ

• 9 years ago

2 answers

How does this unit line up compared to a Qudrajet in terms of airhorn size, position and height? It would go on a Ford with a shaker hood scoop that exits from hood.

by David

• 9 years ago

1 answer

Will this Carb fit on a stock 1968 Ford mustang 302 4 barrel manifold?

by Rick

• 9 years ago

1 answer

I have a stock 1966 mustang with a 289. Is a 625 cfm too much for a 289?

by Eric

• 10 years ago

1 answer

Should I use the 625 cfm or the 750 cfm street demon carburetor on my Oldsmobile 455 engine with 9.1 compression and a stock cam?

by Steve

• 10 years ago

1 answer

Will this fit on a Holley street dominator spread bore manifold ?

by Dave

• 11 years ago

1 answer

Max fuel PSI? What is the max fuel PSI for this carb?

by A1CCrash7

• 13 years ago

1 answer

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