Wheel Hub Stands on Sure-Grip Rear

Car is currently sitting on three wheels with RR tire off and no engine or trans in the car. I have not been able to turn the RR wheel yet, even with a short prybar on the lugs.

Edit.... Correction. It will turn. I was either being a wuss or I needed a little more leverage. Put a heavier and longer square bar in there and was able to rotate. It isn't easy but it turns. Answers my question and now I'll get to making the stands.

I'm sure that there is some torque value that tells you the condition of the clutches/cone?