how do you check a torque conveter to see if it is still good to use. A friend just gave me a converter that came in a car he bought that was a race car it was attached to a B&M TH350 trans but he was told by the previous owner it is a TCI 4000-4500 11" converter. the converter is 11" and is black in color and I cant find a number on it anywhere. the internals look good the fliud is red and smells good. so how do I find out if its still good?:confused: