[Jerry]

83 zx non-turbo - Automatic transmission - Runs great up to 72 mph - at 75 it acts like something is beginning to lock -up. At 80 it gets noticable worse and at 85 begins to surge then slow . I drop back to 70 and everything smooths out. Question - is there a high speed band or fork in the Auto Trans that can cause this or is it some other problem . Thanks for any advice Jerry