EFI 8-Stack V8 Systems

Multiple styles of EFI

A variety of EFI systems

Converting to an 8-stack EFI can be a scary project for the first-time EFI buyer who knows nothing about EFI.  For that reason, every one of our units is shipped "ready to install".  You'll take it out of the box and bolt it on, allowing you to focus on the startup, not on prepping the EFI by having to install sensors or figure out where small parts and sensors go.  Everything is labeled for you and our instructions will help you through your first tune.  I am the only EFI supplier in the world that provides a full set of comprehensive instructions addressing every aspect of the setup process, including ignitions.  These instructions are 23 pages.  Please remember to ask other EFI companies about instructions.  I already know that nobody provides anywhere near the amount of data that I include.  I do this to ensure that you have every bit of the information you need to set up your first tune, because I want every installation to be a success.  

Our complete packages include the ECM and EFI fuel pump, and I specialize in EFI ignition sysyems.  With any EFI application, the ignition is an important component so when you call, we'll discuss the ignition you currently have or what you may need.   If you'd like us to supply a dual sync digital ignition system for your EFI, you can get everything here with a single phone call.  Our prices are the same as at Summit or Jegs.

Our injection systems come in different styles.  If you prefer the look of a classic Weber carburetion system (the original "8-stack" induction), we can build you an EFI that looks just like Weber carburetors with hidden injectors and conventional fuel lines (instead of fuel rails common to EFI's).  These Weber-style EFI’s are so close in appearance to Weber carburetors that it’s almost impossible to tell the difference. I take a lot of pride in the attention to the detail of these Weber-style EFI units. 

Here’s a side-by-side comparison showing our Weber carburetion system next to our “Weber” EFI. Can YOU tell which is which?

A closer look shows our Weber EFI on the right uses real Weber jet cover screens and the same type of fuel lines, carburetor screws, and brass top plugs as the Weber carburetors at the left.  The only major giveaway is the lack of auxilliary venturi tubes inside the stacks on the EFI...but with a set of debris screens fitted inside the stacks, that missing detail disappears.

Old-School Hilborn injection COMING SOON

The Hilborn Fuel Injection Company was recently moved from California to Kentucky and we are happy to offer these classic fuel injection systems again.  Currently, Hilborn injection is available for the bigblock Chevy, with smallblock Chevy units on the way. If you're building a gasser or 60's-era nostalgic car, these "tall stack" injection units are unmatched for nostalgic appeal, and are now electronic fuel injection systems using the same state-of-the-art ECU's as all our other EFI's.  As with all our EFI's, the Hilborn units are sold as complete, user-friendly kits.  


State of the Art EFI

If you prefer the modern look of a state-of-the-art EFI system, our throttle bodies are the most beautiful in the industry.  The unique threaded-in air horns completely eliminate the use of any screws for an exceptionally sleek and clean outer appearance.

We offer EFI systems for Ford 302, 351W, 351C, 427/428 FE, the Ford SOHC Cammer, Ford Coyote engines.   Our Chevrolet EFI's are available for smallblock, bigblock, and LS1, LS2, LS3, and LS6 engines.

All EFI’s are custom built to order.  If it's your first EFI system, you will be happy to know I supply a 100% complete package with everything you’ll need, starting with the right ECU for your specific application, a fuel pump, regulator, ignition, and every sensor required.

Ready for installation

Everything is tagged for you

Other EFI companies may leave it up to you to round up all the sensors you'll need or they may supply them in a box and let you figure out how and where to mount them. When your EFI assembly arrives from our shop, all sensors are mounted and labeled for you.  We don't want you to figure out how to mount or identify any sensors. Our one goal is to make every installation a simple process whether you're an EFI beginner or a seasoned installer.   

As stated above, our instructions provide all the information you will need for setting up your EFI.  It may surprise you to know that some EFI suppliers don't supply ANY instructions.  My intention is always to make setting up your first tune as easy as I can for you.  This can only be accomplished if you have all the information you need at your fingertips 

I’ll always put you into engine control unit that's best for your specific application. ECU technology is changing constantly and I'm constantly changing  with it.  

The right ECU is the entire key to a successful installation.  There are ECU’s made specifically for LS engines.  The Coyote engines require very specific controls to enable the VCT and the year of the engine makes a difference in the ECU selection. There are different ECU's for different year engines.  

Some ECU’s are self-learning; others aren’t.  Some require a laptop and some don’t.  I'm assuming you don't know anything about EFI's and that you'd probably like a self-tuning ECU with its own hand-held touch screen that leads you through the setup.  

If you have an electronically controlled transmission, I'll be happy to provide you with an ECU that has transmission control, or I'll provide a separate trans controller if you need that.  I also provide a variety of fuel EFI pumps depending on what your application is. 

I get asked about ignitions and distributors all the time.   If you need me to select and supply an ignition for your engine, I will be happy to supply a Dual Sync digital Hall Effect ignition package that I will select for your application..distributor, ignition box, coil, and wires. 

My goal is to be the most customer-friendly EFI supplier in the business, so if I can "supply it all with one call", I am always happy to do that.

All our EFI assemblies are shipped “ready for installation”.  I focus on making every EFI package the most user-friendly and most complete EFI available today. Please keep this in mind if you are pricing others, and be sure to ask if theirs come with every sensor properly mounted and labeled for you.  It's an added-value feature, especially if you've never done this before. 

If you're calling other EFI companies, ask if these sensors are included and mounted on the manifold and labeled:  IAC, MAP sensor, TPS, Coolant sensor, and air temp sensor 


Our typical V8 eight-stack assemblies are generally in the $5000 range, but individual pricing varies on each unit.  Every EFI package is tailored and assembled to order, and the component packages can be very different.  For exact pricing, it's best to call or email me to discuss what you’ll need for an accurate price quote. If you email me, I will usually get back to you that same day.

Some of Our Ford Offerings Are Shown Below

Ford 427 Cammer

As a Ford EFI specialty shop, we’re proud to be the only source for a Ford 427 SOHC cammer EFI.  Our Cammer EFI has 58mm throttle bodies and 64 lb Bosche injectors to support 960 hp. These are in somewhat limited supply and the price is $7900.00 as shown, shipped ready to install.  These come with everything, including fuel rails, fuel pressure regulator, and all sensors, which are tagged for you on all units.  

Ford 302

Conventional 302 EFI with plain finish throttle bodies and short air horns.

427 Ford FE / Weber

427 Ford FE with Weber style throttle bodies in standard finishes and ceramic coated manifold.                                                       

Ford Coyote

Ford Coyote engines can be outfitted with Weber-style throttle bodies to give a vintage look to a state-of-the art engine.   This one is the 10-degree angled version.  We also offer it on a straight vertical manifold.                          

429-460 Ford

Ford 460 EFI in gloss black.

The 351 Cleveland is BACK!

The 351C manifold went out of production a while back, and after a long hiatus, we are finally able to offer it again.  Our new 351C manifolds are much improved to include a collective vacuum chamber, so now we can build these systems for either Weber carburetion or EFI.  This new version comes two ways and can be ordered with either a 2-barrel or 4-barrel port configuration.  As soon as we get one photographed, we'll update this photo to show you the complete assembly.  For now, here's a look at our all-new 2021 version of the 351C manifold. 

Ford 351W

Fully polished 351W EFI with Weber style throttle bodies.  The 351W can be ordered with conventional throttles like the 302 shown at above left.  This one is shown in fully polished finishes, built for Gary Rajcock.  This rear view gives shows how we mount the accessories for you...pressure regulator, map sensor, IAC, and TPS can be seen in their places.

427 Ford FE with 58mm throttle bodies

The Ford 427FE conventional EFI is shown here.  These come with huge 58mm throttle bodies and it's one of our lowest-profile assemblies.  Look closely and you'll see this manifold also has nitrous oxide.  If you want your EFI with NOS, let us know.  This unit can produce 750 horsepower on a stroked FE. 

Here's a better look at the NOS lines.  On an EFI, only one set of injectors is needed to deliver the nitrous.  When the NOS button is pushed, the EFI's computer delivers the extra fuel through the fuel injection unit. With just 8 lines, there is much less clutter.

GT40 and Daytona Coupe turkey pan option

GT40 and Cobra applications have always been our specialty with their various linkage requirements and other specific details unique only to those cars.  If you have a GT40 or a Cobra Daytona Coupe, then you may want your smallblock Ford Weber EFI (or carburetors) supplied with a "turkey pan" as you see here.  The assembly shown above replicates the original package as it appeared on the 1965 GT40 race cars.  The reversion plate on top (not shown) is also an option.

As mentioned above, the Coyote units come in both vertical and 10-degree configurations.  Shown here is our base Coyote EFI vertical unit in natural finishes with air horns not yet installed.  There are various lengths of air horns available. 

A fully polished Ford Coyote EFI system built for Roderick Baker’s ’56 Ford pickup in Illinois, built by Riddler Award car builder Tim O'Connell. This one has taller air horns than the standard 50mm.

Chevrolet EFI Systems

Our Chevrolet EFI offerings range from the standard smallblock and bigblock Chevy engines to the LS series, with manifolds for LS-1, LS-2, LS-3, and LS-6.

Our base Bigblock Chevrolet EFI with conventional throttle bodies.

Shown here is a fully polished smallblock Chevy EFI with 4-inch tall air horns.  We offer air horns in four sizes ranging from 1-3/8" to 4".    Tags on the IAC and coolant sensor can also be seen in this photo.  We install and tag all sensors for you here to avoid any confusion.

LS-3 with standard throttle bodies.  We build EFI's for LS-1, LS-2, LS-3, LS-6, and LS-7 engines.

The LS-3 is the only LS-series EFI available in a "Semi Crossram" version.  Manifold and throttle bodies are shown in optional gloss black finish with 75mm air horns.


Screens and filters

Debris screens provide protection without effecting the visual beauty of the eight stack unit.

Individual stack filters can ordered with your EFI.  These are custom-fit filters, made for our air horns by BBR, a leading manufacturer of individual stack filters. 

Because EFI’s include a variety of components that vary from engine to engine, please call with your specifics and I’ll price a customized package for you.  I’ll need you to tell me if you need an ECU, if your engine was fuel injected or non-injected to begin with, type of transmission, and if you’ll need a fuel pump or an ignition for it.  I can supply everything you need.  In most cases, a Terminator X controller will be the best choice and I'll be happy to select the right version of T-X for your application.



One of the features of the Holley Terminator X ECU is the ability to connect a laptop to go deeper into the tuning process.  For this, you will need to purchase a Holley USB/Can interface communication cable, part number #558-443.  This cable is not included with any of the Terminator X ECU kits.

Terminator X software is available under the support tab at Holley.com. Or, you can click on this link: https://www.holley.com/support/resources/#Fuel_Injection. Scroll down to find the Terminator X platform and click on the second line:  Terminator X Software.  Download the software allowing the program to make any changes to the laptop as prompted. 


What a wonderful piece of art you have sent, Thank you. The mechanic, machine shop and all friends are completely impressed. (as well as myself being very impressed) 

 Tim McMath

Just wanted you and your team to know the fuel Injection system you put together for us is more beautiful than I ever expected.

I am sure the performance will equal the attention to detail spent on this project.


Bob Lima

We completed the install of the 8 stack system and it is running great! We put a basic tune in the Holley Dominator ECU and got it running. We were going to fine-tune it on the dyno but so far it is learning and improving with every drive. It gives me the instant start, good idle speed, and plenty of punch from a stop. I will let you know how it improves as it gets more data.

Bruce Conwell

François Clavien

I just wanted to thank you for your fantastic work ! I received it on Monday and I'm in heaven. It is superb! 

I will send photos when it's installed.

Thank you a thousand times,
François Clavien, Switzerland