I have a stall converter I believe from my 59 2spd powerglide was wondering what the stall converter would be it's out of the car thanks in advance
Check the post by Cdnpont
There are a number of sources that may help you find out the answers to your questions
Unless it has some kind of identifying logo and serial number on it, or is an original numbered GM part, I don't think there is any physical way of determining the stall spec from the outside.
An expert converter builder might be able to ballpark it by opening it up.
That being said, I think a stock powerglide converter on a V8 was around 1100. Higher if it was behind a 6.