Last summer, I rode with a buddy in his '54 Plymouth 2 door, 230 with 3 on the tree and OD. On a 560 mile trip, on fairly level ground, at 60-65 mph, he averaged 21.6 mpg. When I read your post I called him in Kentucky and asked if he remembered what we'd figured on the trip. (He keeps a log) Needed an excuse to talk to him, anyway. He said he can't remember the rear gear ratio, but he's turning about 1825 RPM at 62 mph.
