351M / 400 : Low Profile EFI Kit

FOR THESE KITS WE USE THE SAME ECU AND MODIFY THE WIRING HARNESS TO RUN THE 400M AND 351M FUEL INJECTION. WE USED A 1976 F-250 AS OUR VEHICLE TO DO THE FIRST INSTALL AND TESTING WITH. IT HAS BEEN ON THE ROAD FOR 4 YEARS NOW AND IS AMAZING AND FUN TO DRIVE.

5.00 out of 5 based on 1 customer rating
(1 customer review)

$2,800.00

SKU: efi-351m/400 Category: Tags: , , , ,

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Description

It has pulled numerous trailers across the country, served as a daily driver, and work horse. As a daily driver it consistently gets about 15mpg. Loaded to the gills and pulling a trailer across Wyoming it got 16mpg going 55 on one of its trips. Since that first kit we have 10 of these kits in customers vehicles and they have all proven just as solid as our 460 kits.

For these units we utilize a Weiand Action+Plus intake along with the low-profile throttle body. From there all the work is done in-house. We built a custom jig to rework the intake and convert it to multi-port. With this approach we are able to use both the factory SBF fuel rails and fuel pressure regulators. We manufacture our own injector bosses out of aircraft grade aluminum. Using our same jig each boss is tig welded in place. From there the intake is moved onto the next station and is drilled to receive the injectors. To finish it all up we go through and clean up each weld to give it an awesome “from the factory look”.

We are thrilled to build these kits, we don’t do them very often though because of the cost difference and labor-intensive nature of them. Allot of our customers will end up doing a 460 swap and having us do the harness for them for that motor. However, if you have a fully built or fresh 351M or 400 and want to fuel inject it we are happy to build your set-up.

1 review for 351M / 400 : Low Profile EFI Kit

  1. 5 out of 5

    :

    I have this kit installed on my 1976 f250 with a 400m and all I can say is wow! The kit was easy to install and made a huge difference in the performance and MPG. This kit moved this truck into the modern world as it was always a pain to start with the carb now I can reach in and just kick the key for easy starts in any weather. I live in Colorado at 10k feet of elevation and often come down to Denver in the truck and the ECU takes care of all the mapping concerns that I would have had regarding the fuel mixture. I often drive this truck up the high mountain passes pulling a trailer with ease. One of the most impressive aspects of the kit is that on the open highway ( I know its hard to believe, but its been tested many times) at 65mph I can achieve 16mpg and intown mileage is around 12-13mpg. This is a huge difference as I was only getting 8 or so with the junky carb. On a different note Russell is very helpful and knowledgeable. I only needed a couple of small questions answered and he was available by phone. I have a number of products from this company and would say that the customer service is the best.

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