How do you find axle ratio on 63 c10 Chevy?

To find the axle ratio on a 1963 Chevy C10, you can use a simple method involving the driveshaft. With the vehicle safely lifted and supported, rotate the driveshaft one full turn and count how many times the rear wheels turn. The axle ratio is the number of driveshaft rotations divided by the number of wheel rotations. Alternatively, you can check the vehicle's build sheet, or look for a code on the axle housing itself, which may indicate the gear ratio.