Best Carb To Efi Conversion in 2023: Top 15 Picks

Sometimes it might be quite difficult to find the best carb to efi conversion. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this carb to efi conversion buying guide.

Our 15 Recommendations:

The 15 Best Carb To Efi Conversion Reviews:

Bestseller No. 1
A-Team Performance - HEI Complete Distributor 65K Coil - Compatible with SBF Small Block Ford 5.0L V8 EFI to Carb Conversion One Wire Installation Red Cap
  • Heavy Duty — With high-grade aluminum housing and hardened steel dual bushing construction utilizing the 4-pin ignition
  • Original Equipment and CNC Machined — Manufactured by certified OE distributor manufacturer with a polished aluminum shaft and a chrome moly gear
  • Coil Spark of 7,500 RPM — High voltage of up to 65,000
  • Everything You Need — Complete HEI Distributor, one wire installation, all under one red cap
  • Package Inclusions — 1 x A-Team Performance HEI Complete Distributor 65K Coil Compatible With Small Block Ford 5.0L V8 EFI to Carb Conversion One Wire Installation Red Cap
Bestseller No. 2
  • Brand New Holley Sniper 2GC Large Bore EFI Conversion Master Kit, Shiny, Compatible with 1974-1978 Chevrolet, GMC, Oldsmobile & Pontiac Vehicles with Rochester 2GC Large Bore Carbs (#550-855K)
  • Face it, you love driving your classic car, but dread the hassles with your Rochester 2GC Large Bore carburetor. Modern day fuels are blended for modern fuel injection, not that old 2 Jet carburetor from 50 plus years ago.
  • Holley makes it easy to convert your classic car with a Rochester 2GC Large Bore 2 barrel carburetor to fuel injection. The Sniper EFI 2GC Large Bore is a bolt on electronic fuel injection system that will put the fun back in your classic ride.
  • The Rochester 2GC Large Bore carburetor was commonly used on 1974-1978 Chevrolet, GMC, Oldsmobile & Pontiac vehicles like Camaro, Firebird, El Camino, Corvette, Omega & most C-10 through K3500 series trucks.
  • Specs: Brand: Holley Sniper EFI | Emission Code: 3 | Finish: Shiny | Fuel Pressure: 58.5 PSI | Injector Size: 100 lb/hr @ 58.5 PSI | Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6) | Product Type: Sniper EFI 2GC Large Bore
SaleBestseller No. 3
EFI Conversions: How to Swap Your Carb for Electronic Fuel Injection
  • S-A Books EFI Conversions H/T Swap Your Carb for EFI P/N 261
  • Candela, Tony (Author)
  • English (Publication Language)
  • 144 Pages - 07/09/2014 (Publication Date) - CarTech (Publisher)
Bestseller No. 4
DC Voltage Reducer Converter, DC 24V to 12V 5A Buck Converter, Automatic Car Step Down Up Voltage Regulator, Transformer Waterproof Module
  • High-quality material: Encapsulated with high-quality die-cast aluminum material shell, with good heat dissipation function, with silicone potting at the back, waterproof, dust-proof, shock-resistant, safe and reliable.
  • Power conversion efficiency: Using synchronous rectification technology and built-in smart chip, the voltage converter provides over/under voltage input, over temperature, short circuit, reverse input, waterproof, low voltage comprehensive protection.
  • Widely used: The output power is 60w, which is widely used in motors, driving recorders, car trucks, vehicles, golf carts, LED light strips, electric fans, cameras, lights, screens, monitoring systems, solar panels and DIY, etc.
  • Input rated voltage: 24V DC, accept (18V-36V DC) range; Output voltage, current, power: DC 12V 5A 60W; Operating temperature: -40°c~+80°c; Input wiring type: red positive, black negative ; Output wiring type: yellow positive, black negative.
  • Adopt synchronous rectification technology, wide voltage input, improve conversion efficiency, maximum efficiency: 92%-97%; Ripple: 60-100mVp-p; Startup delay time: ≤2S; If you have any questions, please feel free to contact us, We will reply within 24 hours.
Bestseller No. 5
Holley 550510 Electronic Fuel Injection
  • Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended)
  • Throttle body mounted ECU – no extra boxes to mount. Supports up to 650hp with Four 100 Lb/Hr Injectors!
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM). A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!. Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required! Note : Refer to the PDF attached below in Technical Specification for User Manual
Bestseller No. 6
Aeromotive 13220 Regulator, EFI to Carburetor
  • Dual Stage pressure control with one regulator
  • Controls pump/line pressure from 8-16 PSI
  • Controls carburetor pressure from 5-9 PSI
  • Allows any car or truck to affordably convert from EFI to a standard carburetor. Bypass pressure adjustable from 8-16 psi, regulated pressure to carburetor is adjustable from 5-9 psi.
  • EFI to carbureted regulator with 3/8-NPT ports
Bestseller No. 7
MSD 2900 Atomic EFI Master Kit
  • Comes with full manufacturer warranty;This is the complete kit for anyone planning to convert from a carburetor to Atomic EFI
  • Fits multiple makes and models (contact seller with your vehicle for fitment compatibility information)
  • CARB Approved,8 Connections
  • Single Fuel Line,Self-Tuning
  • With the ECU and built-in sensors integrated into the throttle body, the Atomic has fewer wiring connections than any other system, plus there is no bulky ECU to mount
Bestseller No. 8
  • Injector Size: 100 lb/hr @ 58.5 PSI | Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6) | MAP Sensor: 2 Bar | Max Horsepower Rating: 350 Naturally Aspirated | Product Type: Sniper 2 BBL EFI Kits | Transmission: 700R4/200R4, F. C4/C6, TH350
  • NOTE: United States Coast Guard Approved Certified to ISO 8846, SAE J1171 Requirements | F. transmissions may require Part Number 20-60 F. Transmission Kickdown Spring & Bracket kit | A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
Bestseller No. 9
FAST 30227-06KIT EZ Fuel Self-Tuning Throttle Body Injection Kit w/Inline Fuel Pump
  • Direct bolt-on carburetor replacement with throttle body dimensions similar to Holley And other popular carburettors, including a Holley-style throttle linkage And 4150 square flange intake bolt pattern
  • Includes injectors And fuel rails supporting up to 650 HP
  • No software necessary; intuitive self-learning system will work with only a few simple questions answered in the handheld's Setup Wizard And one throttle screw adjustment
  • Can control electric fuel pump, electric cooling fan And A/C line to raise idle RPM when A/C is turned on
  • Includes in-line fuel pump.
Bestseller No. 10
STA-BIL Fast Fix Small Engine Treatment - Cleans Carbs and Injectors - Fixes Rough Running Engines - Eliminates Water - Treats 10 Gallons, 4 fl. oz. (22303)
  • Fixes poor/non-running engines by eating the gum and varnish that causes rough starts, or no starts
  • Fixes issues caused by ethanol blended fuels
  • Cleans the entire fuel system - Simultaneously cleans injectors/carburetors while cleaning the rest of the fuel system
  • Prevents the need to disassemble the engine and is compatible with ALL small engines including snow blowers, lawn mowers, chainsaws, generators, and more!
  • Treats 10 gallons
Bestseller No. 11
6AN Flare to 3/8 Hose Barb Fittings Adapter, Quick-Disconnect Female EFI Fitting, Aluminum Fuel Line Push On Barb Connector, Auto Modification Accessories Universal for Most Cars (AN8-3/8)
  • 【FITMENT】: AN6/8 fuel manifold fitting is suitable for 5/16-3/8 fuel return line. We recommend that you confirm that the size fits before you buy.
  • 【MATERIAL】: The efi fuel fittings are made of high quality aluminum alloy material, which has good corrosion resistance, not easy to rust and oxidation, and can support you for a long time.
  • 【APPLICATION】: This adapter is designed to fit the inlet of your EFI fuel filter and rail. It quickly connects the EFI male thread to the 6AN male threaded fitting. Widely used for brake system / air and fuel delivery / engine conversion / oiling system / cooling system.
  • 【GREAT SEALING】: The 37 degree flare joint taper greatly improves sealing and ensures ease of operation. We guarantee that there will be no pollution during the treatment process, which is environmentally friendly.
  • 【SUPPORT】: We are always committed to provide you with quality product and the best customer service, your satisfaction is our first priority. If you have any questions or concerns, please get in touch with us, our team will respond and solve problems for you asap.
SaleBestseller No. 12
Mr. Gasket - 1933MRG Carburetor Adapter Kit 2Bbl To 4Bbl
  • Fit type: Vehicle Specific
  • Die Cast Aluminim
  • Thickness 1" (with-out gaskets)
  • Includes Hardware & Gaskets
Bestseller No. 13
Easy Street EFI System Up to 600HP
  • Easy Street EFI System Up to 600HP
SaleBestseller No. 15
SUPERFASTRACING 12V Carbon Ignition Switch Panel Engine Start Push Button LED Toggle Racing Auto
  • Package Including:1x Racing Car 12V Ignition Switch Panel
  • Current & voltage: 30A , 12V
  • Material: Aluminum Alloy and Plastic.Color: Carbon-Look
  • Red illuminated engine start button.
  • Fitment:Universal for 12V Power Speediness & Racing Cars.

Last update on 2023-03-22 / Affiliate links / Images from Amazon Product Advertising API

How to find the best carb to efi conversion?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best carb to efi conversion for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good carb to efi conversion recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the carb to efi conversion need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for carb to efi conversion to find what you’re looking for:


In some cases, the brand of carb to efi conversion is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.


The features in any given carb to efi conversion are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.


Customer reviews about carb to efi conversion are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.


Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare carb to efi conversion quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.


Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.


The quest to find the best carb to efi conversion can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.