Is there such a thing as a 5000 stall converter that is streetable ?

I suppose the same question could be asked of bigger cams, single plane intakes, big carburetors, gears........................

IMHO, if you have to ask, you don't get it.
I run a 528" Hemi with over a .800 custom 55MM roller bearing cam, tunnel Ram and two 1050's with 4:10 gears on the street.