Since I'm pullling engine/trans to swap the trans I might as well address the oil pan leak. I haven't investigated if its the actual pan gasket or rear main seal. Would like it have both on hand when I do this. Does anyone have the part number for the rear seal? Read its a 290 ford gasket 6141?

 

Nevermind, did some more searching and found what I needed.

 

glad that you found it!
However you should include, which engine you have in your next questions

 

BS-6141 appears to be valid for all small blocks 260-403. In this case is a was a 350

 

Just to make this thread complete, for anyone searching in the future,

There are two seals that will work for the small block.

Some say that the AMC seal fits a bit better, but it has two "wings" that have to be cut off before you use it.

They are:

Jeep / AMC / International 6 cylinder -
196, 199, 232, and 258 cid
# RM 13879 or FelPro # BS13879

Ford "Y-Block" V8 -
239, 256, 272, and 292 cid, but NOT 312 or 390
FelPro # BS6141

- Eric