EFI 8-Stack V8 Systems

Select from two styles of EFI

As a custom-builder of all types of eight stack systems, I’m not a one-brand manufacturer offering you only one single choice. I offer two distinct styles of EFI’s, which you can see on this page. 

If you prefer the look of a classic Weber carburetion system (the original “8-stack” induction), I can build you an EFI that looks just like a 1965 Weber carburetion unit.  These units have hidden injectors, and use a conventional fuel harness instead of fuel rails.  In fact, my Weber-style EFI’s are so close in appearance to an original Weber carburetion system that it’s nearly impossible to tell the difference. 

Or, if you prefer the modern look of a state-of-the-art EFI system, I use throttle bodies that I believe 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.

I offer EFI systems for Ford 302, 351W, 351C, 427/428 FE and Chevrolet smallblock, bigblock, and LS1, LS2, LS3, and LS6 engines.

All EFI’s are custom built to order.  If you’re ordering your first EFI system, I can supply a complete package with everything you’ll need, starting with the right ECU for your specific application, a fuel pump, regulator, ignition, and the idle air control (IAC) you’ll need. 

You may have been told by a friend which ECU to use.  I would caution you that some engines require specific ECU’s, so just because a certain ECU worked well in a friend’s car, it may not work as well in yours.  Not all ECU’s are entirely friendly to all engines.  I’ll always do my best to steer you to the right control unit.

As an example, if you have a Ford V8 that was previously fuel injected, you shouldn’t use a universal ECU when you can get one with Ford-friendly pigtails for an easy plug-n-play hookup.  Or, if you have a GM LS engine, there are ECU’s made specifically for LS engines. Also, some ECU’s are self-learning; others aren’t.  So, choosing the right ECU is important for an easy and successful installation. 

If you have an electronically controlled transmission, I also can provide you with a transmission controller, so if you need help with that, be sure to tell me.



Because every EFI package is individually tailored to order, component packages can be very different; it’s best to call to discuss what you’ll need for an accurate price quote.

As a general pricing guideline, most of the EFI’s are priced between $4600 and $4900 for a typical V8 EFI unit. 

A good state-of-the-art, self-learning ECU is around $1700.  You may also need an in-tank fuel pump, $576; a pressure regulator, $179; and the IAC (idle air control) is $219.  This should give you a good idea of what a complete EFI system costs.

If you will be upgrading your ignition, I recommend the MSD Pro Billet “small diameter” ignition, which fits with all the 8-stack manifolds.  I can provide that if needed.

Full polishing of the EFI unit is available for $2950, and requires about 60 days.


Below are some images of EFI’s for various applications. Please call if you have any questions or to discuss your specific needs.  An EFI isn’t something you should order by email without having a complete discussion regarding your specific application.  It also gives me an opportunity to ask important questions and to give you the best possible personal service.

Some of Our Ford Offerings Are Shown Below


As a Ford EFI specialty shop, we’re proud to be the only source for a Ford 427 SOHC cammer EFI.  Shown here is our Cammer unit with black throttle bodies. These are available with 58mm throttles and 64 lb Bosche injectors to support 960 hp. These are in somewhat limited supply;  price is $8085.00 with fuel rails, fuel pressure regulator, and all sensors.

Standard throttle bodies on a conventional with short air horns on a Ford 302W manifold the 351W EFI looks basically the same.

Polished 427 Ford FE with Weber style throttle bodies                                                        

Ford Coyote engines can be outfitted with Weber-style throttle bodies to give vintage look to a state-of-the art engine.                              

Weber style throttle bodies for a 351C

Weber-style throttle bodies on a replica 289-302 Cobra manifold built for a ’65 Mustang

For an old-school look with all the technology an EFI has to offer, we build our smallblock Ford 302 and 351W Weber-style EFI’s to look just like Weber carburetion.  This is a very authentic looking 8-stack on a Cobra or GT40 and very hard to tell the difference unless you really know your stuff.  Shown here is a fully polished 351W system.  These come with integral AIC mounted at the rear, as shown in this view.

427 Ford FE EFI with conventional throttle bodies is a very low-profile assembly

Conventional EFI for the Coyote. The new ECU’s for the Coyote include the variable cam timing feature

All of our EFI systems can be ordered fully polished.  Our polishers pay close attention to detail, as this close-up shows.  Shown here is a close-up of our Weber-type EFI system, fully polished for Gary Rajcock’s Cobra.

The Coyote units come in both vertical and 10-degree configurations.  Shown here is our standard Coyote EFI vertical unit in natural finish with air horns not yet installed.  There are various lengths of air horns available. 

Shown is a fully polished Ford Coyote EFI system built for Roderick Baker’s ’56 Ford pickup in Illinois.

Ford 351W crossram EFI is coming soon!

The exotic Ford 351W crossram shown here is scheduled for release very shortly. This EFI will be supplied as a complete package that will include its own ignition system and all the components necessary for an easy installation.  As with any EFI sale, I'll help select the right ECU for your application.

Pricing of the 351W x-ram will run about the same as the upright EFI units except for the addition of the special ignition system. There is no room for a standard distributor to fit in the normal location with this manifold, and we're working out the final details of the ignition package that will be included.

Twelve of these kits will be made available for release this summer, so if you’d like one please call to provide a small deposit and have one tagged in your name.   If you want it fully polished or customized in any other way, please remember that custom orders require an approximate 8-week lead time.


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.

Bigblock Chevrolet with standard throttle bodies

4” tall air horns are shown on this Smallblock Chevrolet EFI system. Air horns are offered in a number of sizes.                                                                     

LS-3 with standard throttle bodies

Our IDF-type EFI is the shortest smallblock Chevy unit, shown here with taller widemouth velocity stacks added.


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.

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