http://www.detomaso.nu/~thomast/efi/

Holy Crap!!! This is a nice set-up. Seems like he went through a lot of trouble with it, but ended up with something nice. I wonder if a 460 EFI would (for the most part) be a similar mod on a 400. Anyone have any thoughts on that? Or would it be better to just make adapter plates for the Windsor set-up. I might actually try this since my best friend owns a CNC machine.

Would a stock 5.8 EFI intake system flow enough to fed a 400 horse/500 torque 400? 5500 rpm will be the max. Looking for massive torque down low that is flat over the band. Or would a 460 EFI set-up work better? I have no idea if that intake will remotely match a 400's, but that is what you (the GURU's) can help me with.

Please don't pass this off. If machining, adapter plates, etc. are needed just tell me where and why. That web page had great pics and info on the Windsor set-up like port dimensions and such. Does anyone know the 460 EFI port dimension's? If you can tell which EFI system would work the best, I will work with that and see if it can all be done cheaply by getting parts of ebay or the junk yard. I will have my friend store all the programs and fixtures if it turns out to be a good set-up. Now let me have it! What's everyone's thoughts?

 

I wouldn't think you could get a 460 intake to come remotely close to fitting a 400 -- length, width, and port configuration would probably be way off. Add to that the fact that the 460 is a "wet" intake and the 400 is "dry" (ala 351C). But with the miracles of modern machining and welding, and the can-do attitude of many people, anything may be possible.

 

Well, after a little more research it seems that the 460 is way off from being considered. Nothing looks like it would come close to matching. As for wet or dry manifolds, it would matter either way. If it was wet, it just won't get any coolant. This could be a PITA, but I am going to try something. Just have to research and compare.

 

i am curently working on a 426 clevor it is a stroked windsor block with closed chamber 4v cleveland heads i am having a intake made out of a 351c tunnel ram base, just have to drill the injector holes, and a custom upper plenum that the throttlebody will mount to, as far as mounting the cleveland intake on the windsor block i got a set of spacers from price motorsport. CHP makes a efi intake for the 351c but it has no upper plenum just a 90 degree elbow like the 460 efi uses it is close to 800 dollars but if you wanted to you could mount it on a 400 with a set of intake spacers from price motorsport. i am putting the engine in a 95 f150 i am going to use a FMS mass air kit. if your interested in the intake spacers they are from www.pricemotorsport.com

 

If anybody was willing to go through what this guy did to get a SBF manifold to fit on a Cleveland, getting it to fit a 351m/400 would be child's play.

You could take his and use the same spacers that are used to put a 351C manifold on an M block.

The other option would be to go Aussie. The Cleveland block is still made there and I'm sure that modern Aussie Fords have fuel injection by now.

 

Not quite, the last Cleveland blocks rolled off the showroom floors in 1982 in the XE series Falcons. After this, Ford AU didn't sell any V8's until the 302 WINDSOR was reintroduced in the EA Falcons in the early 1990's. There were no EFI Clevelands ever built. The last Clevelands used Bosch electronic ignitions and Carter Thermoquad 4bbl carbs on a spreadbore intake.

--J

 

The one thing the author/builder of that SEFI 351c didn't do was to swap in a roller cam.

 

I think either is possible. A 460 EFI intake manifold wouldn't fit but I don't see why you couldn't use 95% of the components. Make an adapter to fit the twin throttle body to an aluminum 400 intake manifold, cut the injector bungs out and have them fitted to the 400 ports. The fuel rails are too long so I would possibly use the 351W rails.

If you wanted to go with a 351W set up with spacers, my only concern would be the port length. I think the injector needs to be pointed at the short turn radius. The injector bungs may have to be relocated to the spacers to correct that.

You could use a 351W EFI distributor by changing the gear. There is an issue about gear material, bronze vs steel etc, but I have to research that issue to refresh my memory. A custom grind cam with a steel gear may be needed.

 

Would the stock 400 intake flow enough for those numbers? (400 hp/500 tq) Or would I need to use an aftermarket (Edelbrock) then modify it? Back to the EFI thing, how thick are the spacers needed for the 351 set-up? My math says it would be around .800. (9.5 deck 351, 10.297 400) Am I correct in that assumption? I know it's best to have the injectors spraying on the intake valve, so that worried me right off the bat. Definitly would have to try and incorporate them into the spacers. Here's a silly question, what about dual sprayers? Using the one in the spacers for the main shooters for good idle and low end and switching on the shooters that would be in the stock location at higher rpms. Both sets being 19 lbs injectors. I am just one of those people that like customizing things. If it doesn't work, so be it. But at least I tried. Hey Brian, so what would you do about the ditzy. Let me know. Thanks Guys, let the ideas keep rolling!

 

i think a 460 efi distributor will work, 460s and 351c distributors interchange.

 

A stock intake would flow enough but I wouldn't want the hassle of trying to retrofit the injectors to cast iron. An aftermarket single plane intake would be a better choice.

Take a look at the port alignment on the Pantera conversion. You would need a 1.1" spacer, 10.3-9.2" to get the same alignment using a 351W intake.

I wouldn't complicate the conversion with dual sprayers, the 460 injectors would flow enough.

Use what ever distributor that was used with the other EFI components.

Some gear material info.
http://www.bacomatic.org/~dw/sgdist/sgdist.htm

 

Contact me @ matthew@midgettmotorsports.com
I am also doing the conversion and have knowledge of the parts to make this process easyer.

Its very simple