I started a rebuild/overhaul on my TH350 last night.  I'm not the happiest person after seeing the absolute mess the guts were in, no wonder it failed.  I found a few big problems, maybe you guys could chime in. 

can you put pic about the rebuild with the topic?  not that i can help  but always willing to learn by llooking what others do  

Bryon, if any of the steel plates are blue/black, it's best to replace them. If you had to hammer it apart, it's a good bet you won't be able to re-use those parts!

I am in the middle of working on an article on this very subject, the 350 trans. It is still in the rough draft stage, but eventually, I'll have it done. In the meantime, here's a couple of pics. The first one is of the forward clutch assembly. You will notice that the one steel plate that is standing up is "wavey". That is the cusion plate, and it fits into the drum first, and then a flat steel on top of that. If you leave this wavey steel out, you will get a harsh forward engagment. If you put this wavey in the direct drum, you'll get a mushy 3rd gear, as well as a mushy reverse apply. (Click on the images to see the large pic.)
                                             

This next photo shows how to measure the pressure plates. There are many different thicknesses, and they are used to set the final clearance for the forward and the direct clutch-packs.
                                             

I would recommend using a TransTek kit, and you would be well off to get the "Master w/steel" kit. It comes with all the clutches, seals, gaskets, and steels. It does not have any of the bushings in it, tho. You will need to replace the front pump bushing at the very least. The Superior shift kit is, in my opinion, the best, unless you want to get silly and have windshield breaking shifts.

If you want, I can locate a trans parts supplier in your area, get you a good price on the kit, and you can pick it up from them. P/M me if you wish, and I'll see what I can do there.

If you can post some pics of what you have there, we could be able to better determine what kind of real damage you have. If you have heat damaged planets, they will not be re-usable, unless you want to go thru this all over again in a few months!

oh, yeah... If the band is not totally black, and really shiny, it is re-usable. A good used band is better than a new one any day.Adams' Apple2006-11-26 16:01:46

I uploaded some tranny pictures.  The plates will definitely be replaced, that decision wasn't very hard after seeing black plates and taking a hammer to a couple of them. 

very interesting to see how to rebuild a tranny  ( incase i haqve to do mine too someday

This is a "case-saver". It is used when there is wear in the case, where the center support fits. It keeps the center support from breaking thru the lugs entirely. There is nothing wrong with it, that I can see.

There IS a problem with THIS however! This is the forward ring gear, and it appears to have been grooved by the forward clutches. You will need to replace this part.

I see nothing in the rest of the photos that looks bad. It all looks like a fairly normal, altho nasty, trans!

Bryon, the closest supplier I have to you is in NC...I believe it is in Charleston. I did get prices on a kit w/steels, pump bushing, HD band, and a filter. If you want to P/M me, I'll give you the skinny on these parts, in case the distrubutor is close to where you are.

That trans looks like a solid candidate for a simple rebuild. I would not recommend putting another shift kit in it, tho. It's not good to mix & match that stuff! What I do see looks like TransGo stuff. I say, wash it, build it, put it in!!!Adams' Apple2006-11-28 12:18:10

Thanks!

Bryon, when I get home this evening, I'll post a pic of where the case-saver fits for ya. Like I said earlier, it is not a stock piece, so it won't be in any manual.

The other spring assy you are looking for is all the way in the rear of the case. It holds the low/reverse piston in. I should have photos of it too.

My bad...I just went & looked at your photos again, and you already have the rev piston out. I will have to assume now that the mystery spring you are wondering about is most likely the center support spring, which the case-saver replaces. Adams' Apple2006-11-28 16:57:30

What happens when the spring is missing... cause it was.  I'll have to add that to my list...

No...the "case saver"(see above post) takes the place of that spring. Gimmie a couple more minutes, and I'll have the pic posted...that will help, I think...


Click on Image for link to photos. Hopefully this will xplain the clip/case saver thing.Adams' Apple2006-11-28 19:44:17