A-833 Decode help please?

I have a few transmissions I would like to learn as much as possible about them before I install one in my 67 barracuda.

First one is a cast iron case A-833 I was given by a (very good) friend years ago, it supposedly came from an early 70,s 340 duster (I never saw the car it came from so I don't know?)

It reads: PP8333007 0449

0B164631


the next trans is a cast iron A-833 OD (at least I was told this when I purchased it).

It reads: PP8335229




Thanks,

Bob

PS: can you explain how the date code digits so I can figure it out?
Author: admin