1965 Dodge Dart high RPM issue

Ok so I decided to stop guessing and it's not as bad as I thought. So I got a tachometer and used a gps to get actual speed. I'm at 55MPH at 2800RPM. Still seems high to me but what do I know.....

Funny you bring that up. I was thinking the same thing... 175 65 r13. I'm trying to see what the Original size was.

OK, 2800, 55mph, 175/65 R13 which shows up as 22" diameter

According to what I come up with, that's somewhere between a 3.23 and a 3.55

A 3.23 gear, 22" tires yields 56.7 mph at 2800

A 3.55 gear, 22" tires yields 51.6 mph at 2800