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How do I figure out my gear ratio?

952 views 4 replies 4 participants last post by  Betaracer 
#1 ·
Hey guys. How can I find out my rear gear ratio on my 02 f 250. It's a 4x4 super duty. Thanks in advance.
 
#2 ·
#5 ·
For open, jack up one tire, spin wheel 2X and count pinion/driveshaft rotations.

If locked or LS, jack up both tires, spin wheels 1X (both wheels will spin together) and count pinion/driveshaft rotations.

Ratio refers to # of rotations of drive : 1 revolution of wheel.

ie: if you rotate the wheel once and the driveshaft rotates 4.1 times, your ratio is 4.10:1
 
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