What stall converter?

Sorry forgot... 3:23 sure grip
I don't have a stock converter actually, the car had a 545 lift cam with a I believe 3200 stall when we bought it. I want to make it more streetable so I downsized to a 508 purple shaft with a 26-2800 stall. Car wouldn't stay running in gear. That's why I'm now leaning towards a smaller yet cam and hear the 474 is a great cam.
So the 26-2800 stall should be the ticket? Thanks for the responses!