Yup. I ran 4.30s in my 65 Valiant for almost four years. 12 miles one way to work. On the interstate. There and back. 28/11/50/15 rear tires. It would spin like 2700 at 55 MPH. Not bad at all. I drove it several times to Indian Springs about 55 miles away. With a tall tire, like what is "correct" to run with those type gears it is really not bad at all. Of course, everybody is in a hurry and nobody wants to go "just 55". I am probably going with a "little less" in the Ford 9" I am putting in my 64 Valiant I have now. Most likely going with a 3.89 gear.
