Factory High Stall Converters

I have a "175K" convertor in my 904 as we speak. I never knew the stall speed because you dont sell them like that unless you know te torque of your motor, then they can sell you a 4500 rpm stall. But put that same convertor behind a 273 and itll stall way lower. Same goes for the 440 running a Hillman or Symca convertor (or whatever the small Chrysler corp trans used) except the other way. That little convertor will stall much higher behind more torque.