I have a Th 350 in my car w/ a TCI 3500 stall. I know you can't go by dyno numbers as far as HP or Torque for autos w/ higher stalls but when i was on the dyno when my engine RPM was at 6500 my wheels were only turning as if the engin was at 4000-4500 Rpm. This is a sign that im either driveing through the converter or slipin the trans correct?