I came up with 33.08(tooth count)= (263 x 3.90) / 31"
33tooth seems pretty low to me
Jon Smith
>Is the value 263 a constant?
>
>Jon Smith
>
>
>>Here is the formula for figuring your ideal speedo tooth count.
>>
>> # of teeth = (263 x Axle Ratio) / Tire Diameter.
>>
>>This will get you the right tooth count for any possible combination
of
>axle
>>ratio and tire size. Getting the correct gear is then up to you and
>your
>>Mopar parts counter person. Good luck,
>>
>>SteveM.
>
>
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