Speedo Gear Selection

Is there a formula or an easy way to tell what speedo gear is needed for certain applications. If someone tells me they have a 27 inch tall tire and 4.10, is there an easy method of figuring it out?

check here

http://www.moparts.org/Tech/Archive/auto/12.html

RATIO
-------24"------26"------28"-----30"
2.76 2538930 2538928 2538926 2538924
2.94 2538932 2538930 2538928 2538926
3.21 2538935 2538933 2838931 2838929
3.55 2538939 2538936 2538933 2538931
3.91 2538943 2538940 2538937 2538935
4.10 2538945 2538942 2538939 2538936
4.30 2538944 2538941 2538938
4.56 2538945 2538943 2538940

Quote:

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Is there a formula or an easy way to tell what speedo gear is needed for certain applications. If someone tells me they have a 27 inch tall tire and 4.10, is there an easy method of figuring it out?

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http://www.yearone.com/yodnn/tech/TechFA...15/Default.aspx




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