TH350 Identification

Hi all! Trying to identify my TH350 from my 72 Skylark. I found what I believe to be a serial number on a boss on the passenger side of the bell housing listing: 13K590049. Anyone know what year this would be from?
Couple images of some casting numbers I found if that will help. Thank you in advance.

Also, this has been painted blue, what would factory color have been in 72, or was it unpainted? thanks

 

1 = Chevrolet
3 = 1973
K = Leeds Assembly Plant
590049 = VIN of the car it came out of.

 

thank you

 

Question, would anything have needed to be done to adapt this to my buick 350 engine? Before I rebuild this Chevy TH350 to reinstall, is there anything I should be concerned about that the previous owner did not do to ensure long life for the motor and trans?

 

Yes, get a different case! BOP and Chevy bellhousings are different.

 

http://tech.oldsgmail.com/trans_bp.php

Devon

 

OK it seemed to be bolted up fine is it just shaped differently?

 

If it bolted up fine, then maybe you have a Chevy engine! Kidding. Otherwise it's a no-go unless you have the rare dual bolt pattern case or use an adapter plate (which is a pain). If there's no adapter and you do have a Buick 350, the dual bolt pattern case is the likely conclusion. If so, build it & run it.

Devon

 

Yeah, no doubt a Buick motor( distributor in the front) thought same thing, and checked that first before I bought it, lol.
Attached pics of the trans. Seems to be the 2 bolt pattern you mention. Correct? How rare are these?

 

That's the dual pattern all right. Not sure how rare, Just don't remember seeing many back when I was working on this sort of stuff regularly. You're good to go.

Devon

 

Not rare at all. Good find to fit your Buick!