I have a 1984 F250 super cab 4x4 with a 460 and C6 trans. I just swapped in a rebuilt trans and did not noticed that the tailshaft is apx 3" longer on the new trans. This has set my transfer case back further and now my front driveshaft is 3" to short and the rear shaft is 3" to long. I am not positive which transfer case I have, I do know it is a Borg Warner and has some kind of single wire electrical connection on the rear cover facing towards the rear of the truck. Has anyone else ran into this and how did you overcome it? Were you able to find driveshafts out of something else that worked for you? My rear shaft is a 2 piece setup with a carrier bearing, if that makes a differance to you. I know the easy answer is to have the driveshafts altered, but there is no one in my area messing with them anymore. I found one man who said he could do it but he does not have the equipment to balance them afterwards. The tailshaft housings and shafts can be swapped but the old trans flew apart inside, clutch pack, and I would prefer not to reuse any of its parts on my rebuilt trans. Any information, other than "get a differant trans", will be greatly appreciated.

Thanks in advance

 

As said here:

https://www.ford-trucks.com/forums/8...-issues-3.html

you are probably not going to find a ready-made shaft. The suggestions made in that thread--the last few posts--are about as good as it's going to get.

If it were mine, I'd go back on the trans and either horse trade it or have it changed to the original tailshaft housing. Easy for me to say, I know.

Good luck with it.

 

I believe -and I may be wrong- that the output shaft for the 4x4 C6 can be pulled out. If that is the case, pull and swap the shaft and housing. Clean them, there's not a lot of potential for bits to hide in that area, and install on the new transmission.
FWIW, if the trans is 3" longer, your shift linkage to the t-case will be short.

 

I am going to experiment with the old trans, as far as removing the tailshaft and housing, since there is no worry about tearing up anything to important. Unfortunatley I do not have much knowledge on the internal workings of automatic transmissions and thought it was a good idea to "ask around" before I started tearing into it. I do know that it looks like the tailshaft housing is bolted on, and should be able to me removed. The t-case linkage has already been fixed, forgot to mention that in the orginal post. The t-case linkage is nothing more than a flat bar with holes in each end, it does have a groove rolled in it for strength, and was very easy to reproduce in a longer form.

Thanks for the info

 

Thanks for the info and I do know a few people who are "into" Fords and may try the horse trading route. As I posted in another reply, I am also going to take a swing at removing the tailshaft and housing from the old trans and see where that leaves me.

Thanks again

 

As for the tailshaft swap, I've read on these very pages it requires a full teardown. Since that trans is wrecked anyway, you have nothing to lose trying. Good luck.

 

The whole trans has to come apart to get the tail shaft out. Make sure you flush the shaft out real good before putting it back into your trans.

 

I have also read the same thing, and have had people tell me that aswell. But I figure the same thing, "What can i hust on the old trans?" Nothing at all. I have a few people scouting for me a short shaft trans also. It might end up being easier to find someone to make me driveshafts to fit. Don't know yet.

 

I am going to take a swing at it on Tuesday. I have also found one man who can alter my driveshafts but does not have the tools to balance them. He claims he does such a good job that a balance is not needed. What is ya'lls thought on that claim? I don't much see how it is possible. No matter how good of a job he does the tube used it not going to be "prefect".

 

The only C6 that I know of that the output shaft that could be removed without tearing the trans apart was the early model bolted to the FE series engine, late 60's and early 70's ford trucks.

It was a short housing and had a flanged output shaft (not using a slip yoke) that was pressed on to the bearing it the tail housing and it came off the trans as an assembly.
It used a center bearing that the slip yoke was mounted to.

 

He might get close enough for a vehicle with an already high NVH level.

Driveshafts are going to spend most of their time under 3000 rpm, so maybe you get lucky. At least then you could drive it to another shop for a balance job if need be. Will the guy guarantee them true and vibration free, in whole or part? Is his price in line, given there is no balance?