Thanks guys, I presently have 215R70-14. If I would like to know what rpm I would see with 3.08, 3.23, 3.55. Cold and frozen here in Vermont today, but the roads were dry, so I took the car for a ride this morning, covered in dust from sitting in my woodshop. It ran at about 1950-2,000 rpm at 55 mph in 3rd gear. At 147 mph it was revving at about 5,300 rpm..

Good Suggestion Colorado 68, and thanks for the help Dr. Drivability.



Just kidding I didn't really go 147 miles per hour. The rest of it's true though.