Somehow I doubt with either gear ratio its going to reach much past 100 mph with a stock 327. It takes a lot of power to push a big box like a '61 Apache through the air...
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more... It's true. I really don't do anything but browse the Internet looking for trouble...