One for the math savvy
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Joined: Mar 2003
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One for the math savvy
I have a '89 F-150 2WD. I have a <a href="http://www.motorhaven.com/">302 </a>and a mazda 5-speed tranny. I have LT235/75R15 tires. What gear ratio's would be suitable. I need the low end gearing for hauling my quad and sled but I need the RPM's not to be too high on the highway. I don't know the final gear ratio of the tranny I know its more than 1:1. Thanks for any help available. We need to find the curcumference of the tires. Then calculate the rpm of the <a href="http://service.bfast.com/bfast/click?bfmid=37919709&siteid=39251846">tires </a>and axle at 100 kph, work it backwards through the various ratios ( 3:10, 3:55, 4:10, 4:55 ) through the 1:1 tranny and not exceed around 3000 RPM or so. Thanks again guys.
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