Top 10 Spread Bore Carburetor – Automotive Replacement Carburetor Spacers & Adapters
As an Amazon Associate I earn from qualifying purchases.



Its optimized calibration and dual mounting pattern make it run-ready for a large variety of engines and vehicles! Note: this model of carburetor has the square bore flange bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor.
Similar to the Mr. Gasket #1932. Specs: barrels: 4 | booster: triple stack | brand: demon | cfm: 625 | choke: Electric | Emission Code: 3 | Finish: Shiny | Fuel: Gasoline | Fuel Inlet: Single. It can replace holley, carter afb, edelbrock, and Autolite style carburetors with 5 3/16" x 5 5/8" bolt pattern. Brand new holley 625 cfm street demon carburetor, with Electric Choke & Vacuum Secondaries Part #1900 .






1. Edelbrock
#ad
Multi, Edelbrock 2696 Four-Hole Square-Bore to Spread-Bore Carburetor Adapter, One Size
#adEdelbrock #ad - Adapter style is individual venturi ports. Mounts edelbrock square-bore carburetors to stock Quadra jet and Thermo-Quad manifolds. 850 Thickness of adapter is 0 Fit type: Vehicle Specific. Adapter is made of aluminum with a natural finish. Hardware and gaskets are included for easy installation.More information #ad
Brand | Edelbrock #ad |
Manufacturer | Edelbrock #ad |
Height | 9.4 Inches |
Length | 10.6 Inches |
Weight | 1.83 Pounds |
Width | 8.3 Inches |
Part Number | 2696 |
Model | 2696 |
Warranty | 90 Day Manufacturer |
More information #ad
2. Pindex
#ad
Carburetor Gaskets 1932 4-Barrel to 4-Barrel Carburetor Gasket Kit
#adPindex #ad - Adapts square flange carburetor to 4-barrel intake manifold. Measures 3/4' nominal height of the adapter only, w/o gaskets. This carburetor gaskets quick and easy installation replacement factory old part.More information #ad
Any 4bbl carb. To any 4bbl manifold except Holley 4500 and original manifolds with exposed exhaust crossover tube. This easy to install adapter is made of diecast aluminum. Included in this kit are the gaskets, studs, nuts and washers.Brand | Pindex #ad |
Manufacturer | Pindex #ad |
Part Number | 1932 carburetor gasket kit |
Model | 1932 carburetor gasket kit |
More information #ad
3. Edelbrock
#ad
Edelbrock 1406 Performer 600 CFM Square Bore 4-Barrel Air Valve Secondary Electric Choke Carburetor
#adEdelbrock #ad - Backed by edelbrock's exclusive 90 day. Designed and calibrated for optimum marine performance. Electric choke with 4-barrel square bore carburetor flange. Single feed fuel inlet with air valve secondary type. Shiny silver finish and calibrated for gasoline.More information #ad
Brand | Edelbrock #ad |
Manufacturer | Edelbrock #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 9.25 Pounds |
Width | 0 Inches |
Part Number | 1406 |
Model | 1406 |
Warranty | 90 Day |
More information #ad
4. Southwest Speed
#ad
NEW HOLLEY STREET DEMON CARBURETOR,SHINY,625 CFM,4 BARREL,ELECTRIC CHOKE,GASOLINE ONLY,VACUUM SECONDARIES
#adSouthwest Speed #ad - Material: aluminum | 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.Its optimized calibration and dual mounting pattern make it run-ready for a large variety of engines and vehicles! Note: this model of carburetor has the square bore flange bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor.
More information #ad
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. Similar to the Mr. Gasket #1932. Specs: barrels: 4 | booster: triple stack | brand: demon | cfm: 625 | choke: Electric | Emission Code: 3 | Finish: Shiny | Fuel: Gasoline | Fuel Inlet: Single. It can replace holley, carter afb, edelbrock, and Autolite style carburetors with 5 3/16" x 5 5/8" bolt pattern. Brand new holley 625 cfm street demon carburetor, with Electric Choke & Vacuum Secondaries Part #1900 .
Brand | Southwest Speed #ad |
Manufacturer | HOLLEY PERFORMANCE PRODUCTS #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 0 Pounds |
Width | 0 Inches |
Part Number | HOL-1900 |
More information #ad
5. Spectre Performance
#ad
Spectre Performance 5765 Universal 4-Barrel Carburetor Adapter
#adSpectre Performance #ad - Precision die cast aluminum outer plate. Adapts holley, edelbrock, Carter AFB 4 barrel carburetors to a Quadrajet intake manifold. Heat insulating phenolic center. Gaskets and hardware included.More information #ad
Brand | Spectre Performance #ad |
Manufacturer | Spectre #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 1.95 Pounds |
Width | 0 Inches |
Part Number | 5765 |
Model | SPE-5765 |
Warranty | 3 Months |
More information #ad
6. AED Performance
#ad
AED Performance 4165 Spread Bore Carburetor Rebuild Kit
#adAED Performance #ad - Power valves. Reusable gaskets. New high Flow needle and seats. New needle and seat nuts and screws. Nylon bowl screw gaskets.More information #ad
Brand | AED Performance #ad |
Height | 1.5 Inches |
Length | 9 Inches |
Weight | 0.5 Pounds |
Width | 6 Inches |
Part Number | AED 4165 |
More information #ad
7. Holley
#ad
Holley 0-80555C Model 4175 650 CFM Spread Bore 4-Barrel Vacuum Secondary Electric Choke New Carburetor
#adHolley #ad - Power valve blow-out protection adds trouble free operation. 100-percent wet-flow tested and calibrated for street drivability. Dichromate finish with 4-barrels. Includes vacuum for pcv, power brakes, EGR, distributor, air cleaner, and canister. Single feed fuel inlet with electric choke.More information #ad
Brand | Holley #ad |
Manufacturer | Holley #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 14.77 Pounds |
Width | 0 Inches |
Part Number | 080555C |
Model | 0-80555C |
More information #ad
8. A-Team Performance
#ad
4MV, Remanufactured Rochester Quadrajet Carburetor, 1980-1989 Big Block Chevy/GMC 454 Truck Applications Electric Choke CARB Compatible With GM/CHEVY, A-Team Performance 1906
#adA-Team Performance #ad - A-team performance 1906r - remanufactured rochester quadrajet carburetor - 4mv - compatible with 1980-1989 big block chevy/gmc 454 truck applications electric choke CARB GM/CHEVY Remanufactured 4-bbl.More information #ad
Carburetor q-jet casting 750 cfm vacuum Secondary Electric Choke Big Block Calibration For Chevy's with side-fill bowl configuration. This calibration will meet the fuel requirements of a big block up to 454c. I. To 430hp and rpm levels of 5500 .Brand | A-Team Performance #ad |
Manufacturer | A-Team Performance #ad |
Part Number | 1906 |
More information #ad
9. Edelbrock
#ad
Edelbrock 1407 Performer 750 CFM Square Bore 4-Barrel Air Valve Secondary Manual Choke New Carburetor
#adEdelbrock #ad - Single feed fuel inlet with air valve secondary type. Shiny silver finish and calibrated for gasoline. Manual choke with 4-barrel square bore carburetor flange.More information #ad
Primary venturi booster is a bottom feed design for smoother acceleration and better drivability. Metering Rod Size-0071 x 0047 inches. Backed by edelbrock' s exclusive 90 day.Brand | Edelbrock #ad |
Manufacturer | Edelbrock #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 5 Pounds |
Width | 0 Inches |
Part Number | 1407 |
Model | 1407 |
Warranty | One Year Limited Warranty |
More information #ad
10. Edelbrock
#ad
Edelbrock 1405 Performer 600 CFM Square Bore 4-Barrel Air Valve Secondary Manual Choke New Carburetor
#adEdelbrock #ad - Backed by edelbrock's exclusive 90 day. Shiny silver finish and calibrated for gasoline. Designed and calibrated for optimum marine performance. Single feed fuel inlet with air valve secondary type. Fit type: Universal Fit. Manual choke with 4-barrel square bore carburetor flange.More information #ad
Brand | Edelbrock #ad |
Manufacturer | Edelbrock #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 8.7 Pounds |
Width | 0 Inches |
Part Number | 1405 |
Model | 1405 |
Warranty | 90 Day |
More information #ad