Gear Ratio and RPM deciding on gears

1969383S said

What do you want and be happy? I ran 4:56 for a long, long time. I rebuilt and thought what I wanted was the same Car that jumped on a right foot press and a great 1/8 mile . Always made me smile! Older I am and 3:55 is just fine for good a cruise car and a romp when I feel so.

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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.