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10 Best Small Block Chevy Fuel Injection Kits 2021 [Top Rated EFI System For SBC Reviews]

Over the years, fuel injection kits have become more and more popular due to their performance efficiency.

These have become the next level for carbureted motors, as the kits’ fuel economy far surpasses those old systems.

The fuel injection kit applications are many, but I wanted to try it on a specific engine: the small-block Chevy. Mostly because I always felt my own Chevy was capable of doing more.

And so it did. With the best small block chevy fuel injection kits, even my good ol’ engine breathed new life. Acceleration felt more responsive, and the efficient use of fuel felt like a relief.

So, I’m now giving you the ten picks that delivered the most satisfying results. The reviews include pros and cons, so you know what you’re getting yourself into.

Let’s start with two basic questions that you’re probably asking right now.

Contents

A Table of Top 10 Best Small Block Chevy Fuel Injection Kits [2021 Updated]

PreviewModelPrice
Holley 550-511K
COMP Cams 3012350-05
Edelbrock 35820
FITECH 30003
Holley 550510K
FiTech 30021
Southwest Speed HOL-550-516K
Southwest Speed HOL-550-850K
FAST 3012350-10E
FITech 38301

What is the best small block Chevy fuel injection kit?

The Holley 550-511K is the best small-block Chevy fuel injection kit due to many reasons. For starters, the system has a sleek black ceramic finish that looks incredible.

But it does more than that, as this particular finish highlights all the unit’s connections and areas. As such, it’s pretty straightforward to understand how it works.

Performance-wise, the kit also excels. The fuel economy is terrific, just like every ride that now feels smoother because of this unit. There are no unpleasant sounds, leaks, or vibrations to bother you along the roads.

And even better, the acceleration response is remarkable.

Why is Holley the best brand of small block Chevy fuel injection kits?

Established in the market for over a century, there’s no other brand that gets the job done as Holley does. The company’s catalog is pretty broad, covering fuel systems, fuel pumps, intake manifolds, and more.

Holley’s fuel injection kits are above the competition for many reasons. For example, these systems can improve the small block Chevy performance significantly. Not only that, but they also adapt to a whole bunch of other vehicle models with ease. As a result, Holley creates state-of-the-art kits with fantastic versatility.

Top 10 Best EFI System For SBC Review & Buying Guide

With that information clear, let’s now take a look at the top ten fuel injection kits. Combined with a small-block Chevy, the results these systems provided were reasonably impressive.

01. Holley 550-511K Sniper EFI Self-Tuning Master Kit – Best EFI System for SBC

 

Highlighted Features

  • Cast Aluminum Build
  • External-Mounted ECU
  • Built-In Timing Control
  • Handheld EFI Monitor

Holley doesn’t go around the bushes creating eye-catching and efficient units. This fuel injection kit is proof of that.

Designed as a Master Kit, this package includes everything: EFI Hose, fuel pump, filters, and more. As a result, the installation goes smoothly, and there are no extra expenses.

The build material of the components is also terrific. Featuring cast aluminum, they’re resistant and durable.

Plus, the injectors come enclosed in the unit for more protection. As for the ECU, you can mount it externally to avoid any inconvenience.

Overall, the kit’s design is so good that everything looks neat afterward, including the wiring.

So, how does this kit improve the engine’s performance? It does so by putting up with 650 horsepower.

It’s suitable as a square bore or spread bore-like carburetor replacement, making it perfect for small block Chevy.

“Some experience is necessary to install this kit. For professionals, it’d be a breeze, but beginners may find some issues with the process.”

What We Liked

  • A phenomenal choice for carbureted vehicles
  • Rugged look with beautiful black finish
  • Protected injectors & enclosed design
  • The wiring & components look neat

What We Didn’t Like

  • Not easy to install for beginners

02. FAST COMP Cams 3012350-05 EFI Kit – Most Efficient Fuel Injection Kit

 

Highlighted Features

  • Fuel System
  • Qwik Tune Tech
  • C-Com Software
  • Individual Injector Controls

Coming as an advanced induction system, this kit delivers power and great controls. In fact, the unit has programmable limiters that stage and boost the engine’s performance.

While it sounds complicated, this means nothing more than an improved experience while cruising the roads.

Pretty much everything else about this unit works automatically, so there’s no need to do much. It has advanced software that makes cylinder corrections, fuel pressure changes, and more.

There’s also the Qwik Tune technology, which you do have to program, but it’s still super easy to control afterward. Using it, you can add valet, street, economy, and race tunes as you see fit.

The almost fully automatic design of this fuel injection kit has no competition. As such, it’s easily the most efficient system for small block Chevy models.

“If you want a super-quiet kit, this one may not be it. The fuel pump can be a bit noisy, though this isn’t a dealbreaker at all.”

 What We Liked

  • A bunch of automatic features
  • Fantastic controls to operate the unit
  • Super-efficient fuel usage
  • Programmable tunes

What We Didn’t Like

  • Fuel pump noise

03. Edelbrock 35820 Pro-Flo 4 Fuel Injection Kit – Best for Optimal Engine Performance

 

Highlighted Features

  • Pre-Loaded ECU
  • 80 Dyno-Tuned Calibrations
  • 800HP Capacity
  • Setup Wizard

While it’s easy to consider this kit as a carburetor replacement, it quickly becomes something else.

The system engineering is top-quality, allowing the engine to put up the ultimate performance like never before. B

oth the rides’ drivability and quality feel much better, bringing only the best out of your small block Chevy.

The kit is easy to use, featuring a self-learning system with brand-new calibrations to support 800 Hp.

This system only needs you to plug it, and that’s about it. There’s no need for laptops or expensive tuning sessions.

Afterward, the fuel injection works efficiently to upgrade the power and performance of the vehicle.

Why go for this kit? Because it’s simple, super helpful, and efficient. It’s a complete kit that leaves nothing to chance, as it comes with everything needed for the setup.

Thus, you won’t have to go the extra mile to set it up.

“Much like other kits from this brand, the installation needs some user experience.”

What We Liked

  • Provides optimal engine performance
  • Self-learning system that adapts quickly
  • No need to use laptops for the setup
  • Complete system with all parts included

What We Didn’t Like

  • Installation is not intuitive

04. Fitech 30003 Go Street EFI – Best Designed Fuel Injection Kit

 

Highlighted Features

  • Cast Finish
  • Flow Injectors
  • 400Hp Capacity
  • Pressure Regulator

Looking for a simple yet well-designed fuel injection kit? Then look no further.

This system from FITECH nails it in every area, offering all the essential features needed for optimal fuel economy while also adding a unique twist.

It doesn’t look like traditional EFI kits, which is excellent for small block Chevy owners that want their rides to be like none other.

The most satisfying benefit of having this kit is that it performs like the best while still being affordable.

Once set up, the vehicle runs smoothly. Plus, warming up is not even necessary anymore. You can just start the car and hit the roads without babysitting it.

After miles ran, the system continues to do well with outstanding acceleration. The noise is barely noticeable, and the throttle response remains impressive.

These three things make this fuel injection kit one of the best.

“However, you may need to buy other items to run this kit. For instance, some recommend getting extra 5/16 air cleaner rods because the package doesn’t have them.”

What We Liked

  • Optimal fuel economy
  • Super-quick starting time
  • Innovative look & design
  • Quiet operation & smooth rides

What We Didn’t Like

  • Need to buy some parts separately

05. Holley 550510K Sniper EFI Master Kit – Best for Quick Starts

 

Highlighted Features

  • Self-Tuning Throttle
  • Bolt-On Design
  • 5-Inch Screen
  • In-Line Fuel Pump

By offering many customizable settings, this kit is an ideal replacement for carburetors. The instructions are easy to follow, and the touchscreen adds to its innovation.

While some would argue that the setup isn’t quick, this really depends on the vehicle model. For small block Chevy, the transition was flawless.

The vehicle fires right on the first start following the installation, which is already fantastic results.

Without hesitations or starting issues, the car is up and running quickly. Plus, the directions included are super detailed and educative, guiding you every step of the way.

But it’s the throttle offered that you’ll end up liking the most. It has a terrific response that also remains consistent, allowing the engine to perform powerfully.

“A baffling issue many people had with this kit is missing parts. It seems to be a recurring problem, so make sure to check the package thoroughly. This will let you know if you need some extra components.”

What We Liked

  • Seamless transition from carburetors
  • Starts quickly following installation
  • No hesitation or starting issues
  • Shiny look

What We Didn’t Like

  • Missing parts

06. FiTech 30021 Go EFI Fuel Injection System – Best Leak-Free Fuel Injection Kit

 

Highlighted Features

  • Dual-Bolt Pattern
  • Aluminum Throttle Body
  • Ignition Timing Control
  • HD Display

Boasting a vintage look with brand-new features, this kit appeals to the everyday driver. Upon installation, you’ll notice that the unit maintains the carburetor look without old issues.

For example, there are no more cold start problems, hesitation, or floodings.

Two elements make this kit stand out: the mounting and the injection method. By mounting externally, it gives you the option to set it up anywhere you want it.

The injection system is also self-tuning, and it rates up to 550hp. These two things allow it to adapt to Chevy small-block engines flawlessly.

To make things easier, this system also has a dual-bolt pattern design. It fits spread bore and the 4150 square bore flange with ease, making it a hassle-free installation.

During this process, you’ll also love the touch screen. With high resolution and full color, everything from the setup to the tuning goes smoothly.

“With that said, it’s important to point out that some experience is necessary to mount this kit.

Otherwise, the user will struggle to make the connections on several points of the engine. Fortunately, all the thought and time put into it pays off, as the unit adapts to the vehicles seamlessly.”

What We Liked

  • Esthetically pleasing
  • Increases airflow significantly
  • Delivers real-time fuel mapping
  • Installation is leak-free

What We Didn’t Like

  • Not the friendliest kit for amateurs

07. New Holley Sniper EFI Self-Tuning Master Kit – Best for the Money

 

Highlighted Features

  • Throttle Body
  • Calibration Wizard
  • Clamp-On Sensor
  • HD Touchscreen

With the capacity to support up to 650hp, this kit adapts to Chevy Small Blocks seamlessly. It only needs four wiring connections, including battery (+,-), switched ignition, and RPM.

Making said connections is a breeze, mainly because the package includes every part and piece of hardware needed.

The performance of this kit is top-notch. Mainly, one of its most satisfying traits is the system’s efficiency.

Fuel return to the tank is terrific, reducing waste and improving acceleration. You can use it for street rods, off-road trucks, muscle cars, or almost every carbureted vehicle.

For the price, few EFI systems are as good as this one. It’s efficient and powerful, two traits that come in handy for any vehicle.

Even better, the engine starts to run more quietly, improving the experience on the road.

“While the installation is straightforward, some automotive knowledge is still necessary to set up this kit.

With this information in mind, you’ll be ready to tackle any inconvenience that may pop up.”

What We Liked

  • Self-tuning kit for a smoother installation
  • Compatible with different vehicle models
  • Complete kit with every part needed
  • Fuel usage is more efficient

What We Didn’t Like

  • Requires some experience for the setup

08. New Holley Sniper EFI 2300 Self-Tuning Master Kit – Best Noise-Free Fuel Injection Kit

 

Highlighted Features

  • Internal Fuel Regulator
  • 350HP Capacity
  • Ignition Timing Control
  • Oxygen Sensor Kit

When the vehicle starts to have fuel-bound overheating issues, this injection kit may be what you need.

Installing it is super easy, and the results begin to show quickly. As soon as you set it up, the monitor displays settings and the tunning options. This way, adjusting the kit to the vehicle is a no-brainer.

Furthermore, you won’t face inconveniences at all while driving. The sensor kit has a clam-on design that remains snuggly, avoiding leakages or spills.

Plumbing external regulators for fuel pressure aren’t necessary either. Instead, the internal fuel pressure regulator takes care of that.

All of this amounts to new experiences behind the wheel that feel smoother. The acceleration suffers a fantastic enhancement, feeling consistent and potent.

Then again, that comes as no surprise, considering this is a Holley kit.

“However, the price of this kit is something to consider seriously. Going over the thousand dollars, it sits on the most expensive side of the spectrum.”

What We Liked

  • Provides consistent speed & power
  • Superb acceleration improvement
  • Installation & setup is hassle-free
  • Puts up a quiet performance

What We Didn’t Like

  • Not a budget-friendly EFI kit

09. FAST 3012350-10E EZ-EFI Fuel Injection Kit – Best Horsepower Capacity

 

Highlighted Features

  • Self-Tuning Design
  • 1000Hp Capacity
  • Precision-Flow Fuel Injectors
  • Fuel Rails

Here’s a kit that delivers that extra versatility to fit any vehicle. For example, it works with mild street rods just as good as it’d work with powerful race cars.

Tuning is not necessary, as the system adapts to your driving preferences as you travel the roads. Indeed, this kit is a must-have due to its friendliness.

Another fantastic benefit of this kit is the design of all the components. They match each other perfectly, so there are no compatibility issues.

Plus, the labeled connectors and wiring harnesses make the setup process smooth and very intuitive.

Once installed, the kit does make a huge difference in different areas. The fuel economy is much better, all caused by improved airflow. Undoubtedly, this kit provides style while taking the engine functionality to another level.

“A noticeable flaw of this unit is the noise produced. While it doesn’t become excessive, you may still hear the sounds nonetheless.”

What We Liked

  • Gets rid of starting issues & flooding
  • Fantastic fuel economy improvement
  • Better airflow delivered to engines
  • Easy operations with convenient controls

What We Didn’t Like

  • Not the quietest system

10. FITech Fuel Injection 38301 Ultra Ram EFI Induction System – Most Flexible

 

Highlighted Features

  • Aluminum build
  • 92mm Throttle
  • 600Hp Capacity
  • Self-Learning Tech

Built with a ready-to-go design, it takes only a few minutes to get this kit up and running.

Mounting it is not a problem either, as the system is highly intuitive for amateurs and professionals alike.

This kit has a 92mm throttle body and an operational capacity of 600 HP. Combined with small block Chevy, it allows the engine to perform better than it ever did.

So much so that the ride feels almost as if it was brand new.

The main feature that makes this system a fantastic choice is the technology behind it. It analyzes the engine’s operations thoroughly, and it adapts to its needs accordingly.

As a result, the vehicle runs smoother and without issues that were present in the past.

“A minor setback is that the unit doesn’t come with as many parts as the others. So, you may need to buy extra tools separately. This is an extra expense, but it’d be necessary for some vehicles.”

What We Liked

  • Turns small block Chevy more powerful
  • Durable, resistant & long-lasting
  • It adapts to the engine’s needs
  • Suitable for amateurs & professionals

What We Didn’t Like

  • May need extra parts purchased separately

Best Small Block Chevy Fuel Injection Kits Buying Guide (Basic Facts)

While looking for a fuel injection kit, not any pick will suffice. In fact, choosing one out of the many takes time and patience.

If you can provide that, in this section, you’ll find the essential features to consider. Keep this information in mind, and you’ll end up investing your money wisely.

Type

Fuel injection kits come in different shapes, sizes, and types. You can go for either a single-point, multi-point, or a direct system.

  • Go with a single point if you’re working on a tight budget and want a kit easy to maintain.
  • Multi-point kits are more accurate but also more expensive.
  • Lastly, pick the direct system if you need fuel sprayed directly inside the combustion chamber.

Horsepower

Determined by horsepower, the power output of an injector is yet another element to keep in mind.

Picking a system by horsepower isn’t easy, as there are other factors to consider, too. For example, your preferred kit’s horsepower must match the airflow and fuel demanded by the engine.

Programmable

Not every kit has programmable features, but those that do are among the best small block chevy fuel injection kits.

This is because you won’t struggle to set them up, as the systems come with settings that you can adapt to the vehicle. Since only you know what works best for your small-block Chevy, programmable kits always come in handy.

However, there’s a downside to this. Kits with programmable settings are often on the expensive side. Be ready to invest between $1,300 and $1,500 to get one of these.

Compatibility

For small-block Chevy, knowing whether the kits are compatible is a must. You don’t want to throw your money away in a kit that doesn’t work with your vehicle. So, consider checking if both your engine and the fuel injection kit are compatible. Save yourself some trouble by doing this.

Brand

If you want to go safe, bet on the most popular brands. Two household names out there that guarantee quality products are Holley and FITech. Fuel injection kits produced by these companies have yet to disappoint.

Conclusion

Realistically, any of the best small block chevy fuel injection kits reviewed here could be your ideal pick.

As long as they’re compatible with your vehicle, you could get a lot out of them to bring new life to your engine.

Optimal performance, efficient fuel usage, and improved acceleration are only a few of the benefits you can expect.

So, consider your options, and pick wisely. When you do, it won’t take long before you notice that this kit is one of the wisest investments you could make.