I just got an estimate for $3100 to fix the E40d in my 93 F-250 7.3 which I am not going to do so.....
I have an 86 F-250 6.9 Diesel with a 4 speed manual no Overdrive (T-19 I think) to use as a complete donor truck. It has a brand new clutch (single mass?)

Is this a possible conversion? and what issues could I run into? Thanks in advance, I am new here but I could not find any threads on this particular conversion since most guys are doing this with a ZF5

 

Anything is possible. The 6.9l uses a big block bolt pattern so if you don't have a diesel or a 460 you'll have to change the bell housing, assuming it has a separate bell housing. The other issue is the ECM also runs the E4od so you'll need an ECM from a truck with a manual transmission. The only other issue is seeing if the transmissions are the same length which will affect your driveshaft length. I'm not sure if you can just pull the auto gear selector off the column or if the '86 column will work in the '93. You might need to get one from a JY.

 

Thanks for the response, the tranny will be going in a diesel so it should match up just fine as I believe that the 6.9 and the 7.3 diesel is the same bolt pattern. Would My 86 Ford donor truck have an ECM that I can use to replace the one in my 93?

 

The 86 ECM will not work in the 93.
And you're gonna miss that overdrive....

 

Go the ZF5 route, you'll be a lot happier.

 

the 6.9l/7.3l idi has a diesel spesific bolt pattern.not the bb gas.
idi diesels do not have an ecm.they are simply mechanical with just a few power wires to make them operate (only one is required to actually run.)
so only the E40D idi trucks have an ecm.it's just for the trans.

what is the E40D trans doing that makes you feel as if it's shot?
you can buy a rebuilt/used E40D trans and put it in yourself for far less than 3k.

 

Heck, my whole truck was only 3K!

 

FWIW, when I did my ZF swap, I bought a complete donor truck for $400 bucks which had everything I needed, but I opted to spend the money on a new clutch set. When all said and done I had about $700 in the swap and I still have my auto and a second T case I can sell and almost get all my money back.

 

The ZF5 is hardly better than the old borg warner or new process trannys besides O/D. It didn't put up with nearly as much abuse as my NP435 does

 

Thanks all for the info:

The transmission stared flashing error codes and shifting hard, the mechanic (very reputable) said it was a "TC slip" code and I had noticed that the RPM's had been spiking a bit while I was in overdrive. His quote included rebuilding the tranny, new TC, new flywheel?, updating some sensors, a rear main seal and an new U-joint in the rear.

This tranny is an e-bay purchased e40d that I put in so I kind of do not want to go that route again especially since I have a free tranny/truck.

 

converter slip doesn't automatically = trans failure.
iv had it happen to me,and i wasn't worried in the least and first assumed it was electrical related (i was right.)
there are a number of things than cause the converter to fail to lockup.this doesn't mean it's a failed converter and certainly doesn't automatically point to a failed transmission.if you have all gears working,and not slipping (just the converter isn't locking up,or really is slipping) then why jump to the conclusion the trans,and not the converter has failed if your going to blame something mechanical right out of the gate? silly of course right?

on the passenger side of the transmission,about midway up,you'll see a heat shield.unbolt this,and you'll see a wire plug.look it over closely,do you see and bare wires? - this is common,and would cause code 62 (converter slip) you can buy a repair plug,change it yourself and fix the issue.
if you don't see any bare wires,carefully remove the plug from the trans and clean it up with brake cleaner,followed by a healthy dose of nonconductive dielectric grease.

another common failure point with the 7.3l diesels (that caused my converter to slip) but without the code i might add for it's failure is here:
https://www.ford-trucks.com/forums/1...ions-only.html

if after doing both of these things,and the problem isn't solved,id be surprised.

this transmission is often rebuild needlessly im certain of it.
you know what happens if your issue is electrical related even with a top of the line E40D trans swapped in? you guessed it.converter slip/code 62 would still be there brother.
diagnose first.
diagnose second.
diagnose third.
replace/repair/swap last.

 

Thanks for the info unfortunately I will have to go with my mechanics diagnosis since he has the thing in pieces and I am not gonna put it back together. What you say makes me wonder though...

..also the tranny had enough leaks, vibrations, and other quirks to put it out of the circle of trust so I am going for the conversion hopefully for better not worse. Plus a manual is better for hauling my camp trailer right?

 

I would say it's less about manual vs automatic and more about the number of gears you have. I guess you don't have to worry about a manual overheating and they don't rob as much power.

 

Another question... Will the clutch/brake pedal assembly from my 86' mount to the firewall of my 93'? or can I modify to make it work?

 

i know this thread was many moons ago....( i thought i would bring it back to life lol ).....but what was the out come on changing from an e4od to t19 trans? i was pondering on this swap myself.