technically as far as i know e4od and 4r100 are the same transmissions just slightly different

 

i might be wrong cause the internals seem the same to me

 

just the 4r100 seems alot stronger than the e4od

 

i was just curious cause i have often threw around the idea of a e40d to a 4r100 swap and if it would work cause iirc the 4r100 came along with the 2nd gen psd on the new body style right? Curious as to if it would fit or not

 

yea but the problem would be how would you control it also a built e40d is just as good as the swap

 

The 4R100 is essentially a newer version of the E4OD. The thing is the E4OD was constantly getting updates often from one year to the next as ford fixed problems and beefed it up to survive the creep of increasing horsepower as the years went on.

I'm not sure exactly what ford's reason was for changing the name of the E4OD to the 4R100 but the evolutionary progress was more or less steady across the name change.

From what I understand, you can build the best transmission by (carefully!!!) combining parts across the E4OD and 4R100 eras. Having said that, the 4R100 is generally rated for higher Hp and torque so it should in theory hold up fairly well. I don't know of anyone that has done that swap before however.

 

i wonder why? i know everyone wants to swap in the zf5 and even the zf6 trannys but it almost brings to question as to why no one has done it

 

Well a speedometer cable or lack there of is a big problem. If a truck came with a C6 transmission, it needs to have a speedometer cable (other than special order or fleet vehicles in some later years). The 4R100 is well into the rear VSS era so while it might be mechanically doable, the electronic side of things gets complicated.

If its a 2wd, I don't even know if its compatible enough with the 89-91 E4OD to be converted to a speedometer cable version. If its 4wd, then you could in theory use an 1991 or older transfer case since that will have a speedometer cable drive.

Another reason is price. Since the 4R100 is a later transmission being pulled from younger vehicles, the cost will likely be higher for a swap.

Now if you already have a 92 or newer truck and want to swap to a 4R100.....not sure if thats worth since you could just rebuild the original E4OD to higher specs. I guess if a 4R100 drops on your lap really cheap than maybe

 

For two wheel drive. You will need the output shaft and the tail housing from a pre 92 E4OD.

 

good to know... so probably just beef up the e40d i think ill stick with that, thanks Dave!

 

Well yes, but is the 4R100 still a close enough relative to accommodate those older parts?

 

yes the output shaft and housing are interchangeable
but the solenoid assembly must be changed and retain the E4OD solenoid
4R100 uses a modulated torque converter clutch
so the solenoids resistance is very low for pulse width modulation
so the 4R100 solenoid would fry the tcc driver in the processor of an E4od equipped vehicle

 

so if i bolt up a 4r100 i need to put in the solenoid body of a 90's e4od and the tc for the 90's as well?

 

and would that be it?^^^^^^^^^^^^^^^

 

here's a good read on the swap:

"You need to pull the front pump and restrict the passage. The 4R pump is set-up for PWM which the E4OD doesn't have.

You will also need to retain the input shaft sensor, you won't use it except as a plug. It on the top of the 4R towards the front.

Also the manual lever will need to be swapped from the E4OD to the 4R.

It's all easy...well maybe except getting the roll-pin out to swap the manual lever out.

You can make other changes in the pump to be rid of the PWM TCC lockup and switch to an on off lockup like an E4od has. The mlps change is to match the swap trucks existing harness connector--same with solinoid pack and shifter linkage.

4r100 has some better gear train parts and the pto option if needed. Disadvantage is some clutch drums vs e4od's and PWM. 2001 4r100-avoid unless it's diode clutch has been replaced--bad year. That won't be a deal if it's an untouched 2001. Both units have weak spots that can be corrected if one wants a beefer build for mods and beyond. Just cost $. "

-Racer_X.

will a 4r100 bolt in a 97? - Diesel Forum - TheDieselStop.com

iv also read where people have used the PSD torque converters behind the idi.
the idi uses 4 bolt,the PSD uses 6.
they simply drilled out the holes in the flex plate to use the converter.

realistically,the E40D is built to handle more torque than our idi's can ever dish out anyway.
the most common failure,is people not flushing the trans every 15k-30k miles,and people who keep driving them when in limp mode.not having an external cooler,and or no temp gauge to see what the trans is doing.
if you don't monitor or maintain it,what does one expect to happen?