Small block mileage

When people say highway driving, 65 mph is quite a bit different that Interstate driving-75-85. 3.23's actually suck on the Interstate. Maybe most of you city slickers just putt around town all of the time. I grew up in a small town, Had to drive 15-20 miles just to get anywhere. I installed 4.10 gears in my 68 340 4 speed Dart one summer. When I pulled them out in the fall, I vowed never to use low gears in my cars again.
^^ This. All my classics spend the vast majority of their life on the highway. Shortest gear I own is currently installed in my Ford 9 inch is a 3.0. Challenger has a 2.76. I actually have a 2.50 sitting on the shelf I'm thinking of putting in the Ford. Both allow me to roll at highway speeds under 3k rpm. Was talking to another Mopar guy at the gas station as I filled my Challenger, he was passing thru from OR and was sharing picks of his Cuda, Duster and Dart IIRC. Guy walked up and asked what mine would pull in the 1/4.. I said I'd pack a lunch... lol. If I tossed in a 3500 stall TC & 3.50 Sure Grip I'm sure it'd do just fine. Sure I'll give it up off the line.. but driving a few hundred miles in a stretch to Vegas or Monterey sure is a lot more fun with a car that tach's under 4k.