Why not use a stock 460 computer then?

 

I was going for sequential EFI with mass air. I thought all of the 460 stock ecm were speed density(bank fired). Can you point me in the right direction

 

You're right.. I don't think there were any mass air/SEFI 460's. My suggestion to use the 460 computer is because..
A) You don't need mass air for the mods you have planned.
B) I think you'll have a better performing motor with better drivability using the stock 460 computer than you would with an SEFI 5.0 computer unless you spend the extra $$ and get it tuned.

If you were doing enough to the 460 to require bigger injectors(heads and a cam) then I would strongly suggest you do a mass air conversion and get a tuner. But for your relatively mild buildup you'd have to invest quite a bit of $$ and time in tuning just to get it run as good as the stock batch fire system.

 

Thank you Paul. I apreciate the input.

 

Well now my question is what is exactly the threshold that the SD system can handle? I'm planning a fairly mild build for a 460 which basically consists of porting the heads and intake (if possible and if necessary. Though I hear the breathing flaws rest more on the exhaust side) and an RV cam (along with headers, dual exhaust etc). I'm not aiming for a speed demon. not aiming for something that needs a radical cam profile or over sized injectors Just something with a bit more grunt than stock. Can a SD system handle those kinds of mods?

 

SD system likes anything that doesn't impact the vaccum signal in the manifold - meaning no to minimal overlap.

At least with the stock code/data.

 

Yes. The stock computer is calibrated for 24lb injectors which will support about 340HP at 80% duty cycle, so you can make ANY modification you want including porting heads and installing a larger cam as long as the motor maintains near stock vacuum signal quality. The vacuum signal is largely determined by the cam, it must conform to specs that include at least 114 LSA and no more than 216 degrees intake duration at 0.050". A cam with specs outside this will cause all sorts of driveability problems on even a stock motor.

 

Did you ever get a answer to your question about using the M9000-T50 kit for yourt AOD Truck. I''ve got the same situation and I've spent hours reading all the MAF conversion posts and couldn't find the answer to this question. Can the M9000-T50 Ford Racing MAF Conversion Kit for 87-93 F150 5.0L Trucks with a manual trans be used on a truck with a AOD trans? If not, what change(s) need to be made? If the ECM is the only difference what ECM can I use with the rest of the Ford Racing Kit. Any hel;p would be appreciated>

 

Yes you can use it.

 

Thanks for replying so quickly. What changes do I need to make to get it to work in an AOD rtuck since Ford Racing says it's to be used in a manual truck?

 

No changes. The AOD is not computer controlled so the computer has no influence on it.

 

I am preparing to do a MAF conversion on my 91 5.0 manual truck. I was able to get a good deal on a MAF computer from a 95 truck with 4R70W. Will I be able to use this on my truck? Or will it throw a code when it doesn't see the transmission?

A couple of months ago lmd91343 among others were talking about using some of these 4R70W computers, but I am not sure if they were just talking about using them with an E4od .

Thanks...

 

If I'm not mistaken, the main diff between the t50 and the t51 is mainly in the kickdown linkage nothing really to do with the computer. But someone pls correct me if there's more

 

there is ALWAYS valve overlap, sometimes more, sometimes less...but it's always there

 

If I'm not mistaken the main diff between the t50 and t51 is in the aod Kickdown linkage nothing really to do w/the computer but someone pls correct me if i'm missing something