I'm going to have to say the converter is too tight or broken... you are over 2 tenths off in the 60-foot.. your mph is on par with my old smb it would run 10 flat. With a 1.33 60ft. .it would stall to 6700.and I would shift at about 7700 rpm


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb