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Old 02-08-2002, 06:03 PM
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427sharpe 427sharpe is offline
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Join Date: May 2001
Cobra Make, Engine: A CSX Cobra,1966 GT350 and an '06 Ford Heritage GT
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worksalot;
a general rule of thumb to help you---
if you change NOTHING but rear end gearing, the ratio differential can be applied to your rpm as well. For example, if you are running 3.08 gears and you are turning 2500 rpm @ 60 and you change to 3.73 gears, you will be turning ABOUT 3025. How to get there? 3.73/3.08=1.21 x 2500=3025. You can be more precise with a longer formula----if you want it email me and I will send it back to you or just post a request here. I dont want to post it unless you want it because it's rather long and tedious (but it is informative).
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