It is a Trans Action 10 inch converter. Part number is 17805ST. It is what they call a tight converter but I think "tight" is a relative term when it is behind 600 ft-lbs of torque. I don't have any issues with the converter, it seems to be a pretty good match for the way I drive the car. I just didn't know what to expect in terms of slip while under power. My guess is at the track this converter will never catch up to the engine. It will slip a lot off the line and then gradually close the gap in high gear but looks like it might go thru the lights at 10% slip. Guess I'll just have to do it a few times and keep track of it.