Transmission questions

I bought this engine/trans ages ago and have some questions about the trans.
I was told it was a LaSalle trans, but I have zero knowledge of these, so please pardon my ignorance. (FNG)
What are the 2 electrical things on it?
The engine is a '53 Chrysler 331 hemi.

 

The trans appears to be a '49/'50/early '51 Merc and it is an Overdrive model. The electrical connections are for the OD solenoid and governor.

Ray

 

It's a Borg Warner overdrive transmission. They were used in a lot of cars, not just Fords, but I never heard of them being used in a LaSalle. Could be true, just never heard of it.

 

Right, Studebaker used them right up until the end in 1966.

 

X2. Note the bell and inspection hole on the front of the transmission.

 

I know a guy who claims one was original equipment in a 68 Impala. I don't know if it was OEM, but it was certainly in there attached to an inline 6.

 

Should be a bunch of BW numbers on the tranny that will help you determine which overdrive series you have. What shape is the engine in?

 

Thanks for all the replies.
I've had this for 30 years, and have never done anything with it.
I have a pic of some numbers on the tailshaft.
The engine's probably stuck from sitting so long.
I bought it from a guy who was selling it for somebody else.
He said the engine was in a Stude. Don't know what year or anything.
The oil pan's been clearanced a little on one corner of the sump, probably to make it fit somewhere it didn't originally go.
I'll see about getting those numbers.

 

Here's a pic of the numbers-

 

Borg warner was the supplier of Overdrive systems to the entire industry. Their 3 speed Transmissions and designs were used in Fords, Mercuries, Lincolns, and Studebakers. Their Overdrive units were used by all of the above plus Hudson, Packard, and Chevrolet. The one you have is the Mercury (as already stated) which uses the B-W R-10 overdrive. Most of the cars mentioned used that version with either the B-W transmission or with their own (Chevrolet). Later '60s versions (after everybody had higher output engines) had R-11 models ('49-'51 Lincoln used the R-11).

 

Third opinion...definitely '49 type Merc.
The T-10 is a BW number, the lighter of two OD types used by every manufacturer at one time or another.

 

I've never heard of a Cad-LaSalle trans with overdrive.

 

I haven't heard a lot of third-hand information that was entirely correct, either, if you know what I mean.