. I took out a 7in converter that would flash to 7300 . And drop to 7500 on the gear change.. this converter felt very mushy and the efficiency was not very good however it was fast.. it went a 119.2 /60 ft...with a 5.42. At 126mph . And would pick up another 33 mph on the back half.. at about 15% slippage.. I had an 8-inch built looking for a little more torque multiplication and a little more efficiency. It is slightly tighter at about 7100 rmp. I think it needs to be at about 7,500.. that being said it's still went its new best at 5.39 at 127.. we still had some ET left in the tune-up unfortunately the track wasn't up to the task also if you noticed it was smoking pretty heavily.. it was pulling in a . Hefty amount of oil into the intake track my fault I got that squared away now hopefully we can get it to a good track and get the car to run what Wallace says it should run..