how are 3500 stall conveters sopasto act

I think it's time for a new transmission man! A 3500 on the street is going to generate more heat than a lower stall converter. And if your running a some what high gear ratio like 3.23, that will only make the trans slip more.

I agree a new tranny is needed.

3:23 gears and a 3500 stall do not belong in the same car. That would be completely miss matched.