Ok ppl, I'm planing on building a 475+hp 525+tq MONSTER out of my 7.5L E4OD F250. With months of research I have come to conclusion that purchasing a "standalone" E4OD controller and "detrofitting" to carburetion is my most cost effective way. With converting to MAF it will cost me approx.$3k+ (fuel sys. upgrade-pumps,lines,rails,injectors,mod intake manifold or mod carb intake for injectors,IST or DunneRite MAF conversion 90mm+ ,build cold air intake sys,90mm+ throttle body with cable, etc...). Emissions are exempt in my county and MPG's are not a concern.

Any educated ideas and thoughts are welcome.

 

A carb intake won't mate to those heads.
Two simple options from Price Motorsport.


You can buy adapter plates to put a Holley on your EFI lower manifold.
CS-460EFI

Or plates to mate a carb intake to your heads:
AP-37 Intake Adapter Plate

 

I think you can get away with running a mustang mass air setup and A9L with some tuning. Those guys build 5.0s to that HP/Trq level all the time when going SC or Turbod. I think going carb is the wrong direction with such a build.

 

Awesome carb plates! I was not planning on using the 7.5 heads or intake manifold on my build but what a great idea to get started on the conversion. Stang MAF will not work with E4OD I would still need to go with a Lightening set up. What about going standalone i.e. AEM, LINK for pretty much the same price as the FORD units. Has anyone done this? I have a 1994 model and just wanted to know about gauge wiring and other issues.

 

Honestly the mustang efi would work, just need a bauman stand alone for the tranny and would be far cheaper, and more common to have tuned at most any dyno shop.

that e4od is gonna need about $3500+ in a rebuild to handle that power but i am sure you knew that already.

ive heard of guys going the AEM or Accel efi systems and found them very difficult to find folks that can tune it properly. the Ford mass air efi system is so well known. you could even go with a tweecer or quarterhorse to tune yourself if you wanted but personally i think a dyno session would be best for a build such as this.

 

You're overlooking one obvious possible solution, simply use the stock truck EEC to control the transmission and then either use a carb or standalone EFI setup on the motor. With both engine options you will have to supply the the stock truck computer with all the main engine related input signals it normally sees(MAP, TPS, ECT, ACT) but of those the only one that would require some fabrication would be the TPS and that's only if you go carbed.

Yep sounds about right even if you used a Mustang ECC and piggyback tuner.. that's about what I have invested in my setup.

 

Which country are you in.

As far as efi vs carb... Let the battle begin.
The e4od will need at least a good overhaul to handle that power you're hoping for, especially if you abuse it regularly.
Carb is fine, but if you can do your own work, then port the efi heads and get some 2.19 valves installed and whatever size exh fits, then with headers and 4" exhaust you'll be golden. The stock efi intake is similar to the edelbrock performer, which I've gotten nearly 500hp out of, and port the upper 90 plenum and put a lightning/cobra tb on it. Cold air intake is simple.
Then with some 60lb injectors (stock fuel rail is gonna limit you) and Bosch 044 pumps, just tune the stock ecu. Yeah it's map and not maf, but unless you're gonna put boost into it, you don't need maf.

 

if you try and use a efi runner with a adapter plate at the top you can run into puddling issues real easy. by simply doing as much work as possible yourself you will save tones. (not sure if you are planning that or not) the mustang setups i agree will make what you want and by using that kind of stuff you can hunt for someone who has what you need that has quit a build thats half way done their are formula to figure out what is needed with fuel line injectors and all that with what numbers you are wanting to run. being that mpg is not a big and your not running boost check into having a factory computer reprogramed then dyno tuned this will make it where you can use the factory harness and dont have to worry about pinouts and such. Will you factory sensors, map, maf, tps, and all that handle what you want to do I know a guy up the street that built a stang putting double those numbers down and he used the a factory computer and sensors and just built the motor, fuel system, and exhaust to handle everything. would love to see pics when put together. Just food for thought though is have you planned on how you were getting all this power to the ground ie axles drive shafts and tranny. another is have you planned on the stopping game thats alot of juice to slow down in a emergency????