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TH 350/NP 205 adapter plate

Good info guys. I need to look at the one I have, it has always leaked tranny fluid into the transfer case. I think it is the one with the bearings. Never could figure out why it was leaking. Thanks
 
The adapter that I have does have 2 seals and it has 1 bearing. So the adapters are different per the year?
Theres only 2 different adaptors to mate the 205 to the 350 tranny. I have the bearing type here in my shop. I do know for fact the bearing types are older than the non-bearing, 2 seal adaptors. I had an '80 K10 once and it had the non-bearing, 2 seal adaptor.

I'd say either adaptor will work fine. If there are others who choose a personal preference, I'd like to hear their opinions on which adaptor would be better than the other.
 
Hmm. I dont think it matters what adapter you put in but it seems that there is a difference in the structual build in the 2 adapters.

Now a buddy told me that the 205 is sealed at the case. Any info on that?
 
I have a 203 that will bolt up to get me going until I can find the right adapter. If anyone has an extra let me know.
 
Hmm. I dont think it matters what adapter you put in but it seems that there is a difference in the structual build in the 2 adapters.

Now a buddy told me that the 205 is sealed at the case. Any info on that?


I would say that the new and old style adapters are the same strength, they both crack in the same places, horizontally at the mounting foot or vertically in the middle.

The TH350/NP205 input bearing is not sealed, the seal is in the adapter and the O-ring on the shaft. The Ford NP205s and newer long input 32 spline female Chev NP205s are sealed because the inputs an adapters are different. It really depends on the original application.
 

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