To be honest, I'm not sure exactly what I need. Problem though is this:
The case came out of a 1991 one ton, 4L80E truck. The output of the tranny and the adapter were broken (completely through) and the input of the 205 was bent. Visible when turning by hand. The truck was beat incredibly hard, lets just say that. Stolen and driven like it I suspect. Got my hands on a good 205 input from someone on this board, at least it was said to be good, and I have no reason to doubt them. Visibly it was 10 times better than the one that was on there, didn't notice any "wobble" like the original one.
Now that it's on the truck, ONLY with the case in neutral, the rear output (only) and rear driveshaft move up and down perhaps 1/16-1/8". This is at idle, with the tranny (465) in neutral as well. I can put all my weight on the driveshaft and not stop this movement. 2 or 4wd the wobble stops. From my understanding of how power is transferred, and the way this problem is evidenced, it can ONLY be an issue with the input or output shafts and their supports.
My somewhat educated guess is that the output shaft is bent, likely the "stub shaft" tip of it that rides in the input needle bearings. Since this is the non-cable case, and GM doesn't sell the pieces anymore, it's hard to know if the earlier 205 stuff (which I have as spares) will fit in place, at least temporarily to see if an output swap solves it. With the roller bearings of the input/output not being a real precise fit, it would seem that any sort of measurement of runout would be fairly pointless. But in using the same case, swapping only the input, even the roller bearings could be faulty, but at something like $30+ for each bearing, I'm inching closer to the territory of a known good case of that vintage. (at least in my mind, since a spare case is never a bad thing)
Reality is that it would PROBABLY run as is for a long time, but with the reluctor ring, that's just one more potential failure point if things don't line up just right.
So anyways, the later output, complete, along with knwon good input/output bearings couldn't hurt. I can't even find info to say if the rear output shaft stayed the same and the reluctor ring was made to fit what already existed, which would obviously solve my problem. This time of year though, tearing this thing apart outside is not something I'm looking forward to. Complete known good case would eliminate any other potential issues though, which is why I'm open to that.
All that long winded stuff aside, what do you have?
