Th350 or 700r4 What is it?

[mikerhoades50]

I have an extra tranny that came with my truck. I was told that it had about 15K miles on the rebuild. It is a 2X4 tranny and my truck is a 4X4, so I opted to rebuild the tranny that was in my truck, now I am trying to get rid of the other one. I had it listed on CL as a 350, and had someone come to look at it, and told me that it was a 700. So I sold it as a 700, now this guy is saying that it is a 350. Is there an easy way to tell the difference? The one I have has a locking torque converter. Did they put these on 350's?

[1980c10]

http://forum.73-87chevytrucks.com/smforum/index.php/topic,11124.0.html

I cant imagine buying (or selling for that matter) an engine or trans with out confirming what it is. Such an easy step to make for either person.
 

[Blazin]

TH350 square pan with one corner cut off.
700R4 pretty much square pan with an indent in the rear of the pan if I remember correctly.
They did offer TH350s with a lock up converter.

[mikerhoades50]

Thanks for the responses! great site on that link!