625 CFM Street Demon Carburetor

Product Code: 1901

£418.30 EX VAT

£501.96 INC VAT

Product Overview:

All of our Holley orders are done once a week from USA, if you need it sooner please contact us prior to ordering. Complete delivery may take up to 14 days.

Vacuum secondaries and electric choke Ball-burnished shiny aluminum finish Black composite fuel bowl

More Information

Product Details Specification Delivery & Returns

Product 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 straight forward 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

Features:

Ball burnished shiny aluminum with black composite fuel bowl
Designed for use on most stock to mildly modified V8s
Developed from the ground up with smooth styling - patented timeless design fits modern as well as traditional themed vehicles (Patent No.: US D648,746 S)
One piece airhorn is easy to clean and maintain
Aerospace Composite fuel bowl offers significant heat insulating benefits over aluminum fuel bowl - keeps fuel up to 20º cooler for optimum performance with modern fuels
Aerospace Composite fuel bowl offers significant heat insulating benefits over aluminum fuel bowl - keeps fuel up to 20º cooler for optimum performance with modern fuels
Electric Choke Management means easy cold starts
Electric Choke Management means easy cold starts
Dual mounting bolt pattern - fits most aftermarket spread/square bore intake manifolds without adapter
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 response and drivability, superior fuel atomization and improved fuel economy
Goggle Valve Secondary (GVS) throttle plate (Patent # D677755) delivers over twice the air 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)
2 Stage metering rods control easily accessible without carburetor disassembly or removal
Single fuel inlet for simple installation
Integrated 700R4/200R4 transmission kickdown cable mounting location as well as Ford A/T kickdown for proper shifts
Patent pending mechanical design
625 CFM specific calibration kit available for tuning and altitude adjustments
Available TPS kit allows use with 4L60 and 4L80 transmissions

Demon Carburetion Introduces New 625 Street Demon Carburetor - Dragzine

Street Demon article - Street Rodder

DEMON CARBURETOR'S 625 STREET DEMON - Competition plus

How to succeed in tuning the first twin Street Demons on Lamar Walden's new Chevy 409

Demon 625 Carburetor Test and Tune - enginefactory.com

New Street Demon Carburetor Makes Installation Simple - chevyhardcore.com

Specification

Barrels	4
Booster	Triple Stack
Brand	Demon
CFM	625
Choke	Electric
Condition	New
Emission Code	3
Finish	Shiny
Fuel	Gasoline
Fuel Inlet	Single
Marine Use	No
Material	Aluminum / Composite
Metering Rod Size	60/52
Model	Street Demon
Primary Main Jet	80
Primary Pump Nozzle Size	31
Product Type	Carburetor
Secondaries	Vacuum
Secondary Main Jet	80
Step up Spring	Green
Supercharged Application	No
Vacuum Ports	1 timed (spark) port, 2 full, and 1 PCV port
Warranty	Limited 90 Day
Part Number	1901

Delivery & Returns

Billy's Speed Shop ensures the highest standard of service. Therefore we use only most reliable delivery services in the UK what allows us to provide you quick and efficient delivery of your products.

We aim to stock all of the products in our warehouse. However the situation may occur that we currently do not have particular item in stock then we will order it directly from UK supplier. If delivery time will exceed 3 days we will inform you via email or telephone.

Our Delivery Options are as follows:

Parcels up to 2kg and up to £50 of value are being sent via Royal Mail - 1st or 2nd class.
Parcels up to 2kg and £50 - £100 of value are being sent via Royal Mail - 1st or 2nd class - Tracked.
Parcels over 2kg and over £100 of value are being sent via Courier - DPD Tracked.
Bulk or Heavy purchases that weigh over 20 kg are sent on a pallet - Pallex.