jbinwa, looks like you hit a good score- congrats!!! It's a Muncie- A Borg-Warner T-85N Overdrive.
Here is a site to assist you-
overdrive .
I think you will find out more there then I even know-LOL (which fits on the head of a needle)
If you 'think' you may want to rebuild it then you will need this page-
rebuilding T-85N overdrive