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how do I figure out gear ratio's?

803 Views 2 Replies 3 Participants Last post by  Slanted_Mind
I just bought a Dana 60 half ton axle out of a 71 ford pickup and my friend told me it had 3.55's in it so I pulled off the diff cover to check the ring gear and make sure, and there are no markings as to tell what gear it had in it, so I counted the teeth on the ring and pinion and the rings is 46 and the pinion is 13. If some one knows the formula on how to figure the gear ratio out please let me know because I am dying to find out what gears this thing has . thanks ???
1 - 3 of 3 Posts
yup, 3.53 ratio

go to and punch it in the calculator yourself ;)
46/13 = 3.538xxxx = 3.54
1 - 3 of 3 Posts
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