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manny
12-04-2012, 11:14 AM
does any one know the formula to find your speed? im looking to play with some final drive ratios and transmission ratios also.

Gregg
12-04-2012, 11:41 AM
Google is your friend...

http://bit.ly/SuZjL7

This one in particular looks good.

http://www.apexgarage.com/tech/gear_ratios.shtml

billf
12-04-2012, 12:34 PM
Manny,

Since you are working on a Ford, this site will possibly help. It also lists the various ratios for the T5 tranmissions of the Ford cars.

http://www.merkurtech.com/merkurtech/calculators/rpmmph.php

FYI...we found the best ratio was the 3.4, using final drive of 1:1, and 14 in tires.

Good racing.

Bill

mbuskuhl
12-04-2012, 11:44 PM
PM me your email address and I will send you two different MS Excel gear calculators that will help you choose ratios and the effects they have on speed and RPM drop.