Looking at maybe changing converters, current one was built by a friend 25yrs ago. Its a 8 inch and he refreshed it this spring but I feel its holding car back, it should be mph in the 130s and so far has only gone 126. Feels like its on a dyno all the time, never pulls rpm strong.

Who makes a good 727 converter in the 55-6500 stall range. This is for my AMC but there is really no difference in converter but the ring for starter.