Just a suggestion....instead of turning the rear wheel over one time and trying to eyeball whether you've got a 3.08, 3.23, 3.42 or a 3.73.....turn the wheel 10 revolutions while counting the driveshaft rotations. By doing it this way you not only determine the first number of the R&P ratio, but also the second. As an example, if 10 turns of the wheel give you 17 revolutions of the driveshaft. Multiply that by 2 and divide by 10 and you have 3.4 which would determine that you have narrowed down the ratio to the 3.4's. If you're trying to nail the R&P ratio it helps to have a more accurate count.
Dave
Last edited by Fla54Chevy3100; 02/26/09 12:38 AM.
