Up to speed as in keeping up with others on the backroads and highways. What is the easiet, fool proof way to make my 57 get up to speeds of 70-80ph??? I have a 235 straight 6 and don't know what gearing ratio. All I know is that everything is stock. I would like to keep that way as well, if possible. Don't want to mess with changing out the whole rear axle and differential, maybe willing to change the transmission as long as it doesn't do away with the three on the tree that I love so much. Won't be doing any hauling or strenuous driving, just drive around town, ice cream runs, etc.
