In need of a th400 to np203 adapter!!!

[crewcabk20]

I recently broke the rear housing of my th400 along with the adapter to the np203. (I believe is the factory drivetrain. 1976 k20 4x4 big block.) I had a good th400 case laying around Ive swapped everything over to. The issue is trying to find the adapter. The casting number is 376129. I have called every off road store I can look up on the internet, and no one has one. There are no salvage yard I can find that have one. Would anyone have one sitting around or know where to find one? My next option would be taking it to the machine shop to have them duplicate one. Thank you

 

[bucket]

You broke that one real good, lol. Have you looked around on ebay?

 

[crewcabk20]

Thank you for the reply! I have been keeping my eyes open for the last month or so. Haven’t seen one come across yet. I was hoping maybe someone had a spare laying around or knew of one. I’ll keep hitting the web and salvage yards for a couple more weeks. Worst case I’ll bite the bullet and throw my 205 in there and have my shafts modified.

 

[Snoots]

Look up @Vbb199.

 

[crewcabk20]

I just messaged him, thank you for the possible connection.

 

[K104ever]

I recently broke the rear housing of my th400 along with the adapter to the np203. (I believe is the factory drivetrain. 1976 k20 4x4 big block.) I had a good th400 case laying around Ive swapped everything over to. The issue is trying to find the adapter. The casting number is 376129. I have called every off road store I can look up on the internet, and no one has one. There are no salvage yard I can find that have one. Would anyone have one sitting around or know where to find one? My next option would be taking it to the machine shop to have them duplicate one. Thank you

I have one of these adaptor’s, GM 376129 questions please feel free to reach out!