Speedometer Gear Question

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Speedometer Gear Question Empty Speedometer Gear Question

Post  fordmanmatt on February 18th 2014, 6:55 pm

So I currently have a stock 2.89 gear ratio in my 78 Ford F150 and I am putting in a 3.73 gear ratio with 29 inch tires so for my speedometer to work correctly how do I determine the teeth count I will need to install back into my c6 transmission????
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Speedometer Gear Question Empty Re: Speedometer Gear Question

Post  supervel45 on February 28th 2014, 4:20 am

http://www.explorerforum.com/forums/showthread.php?t=158739 I believe these formulas apply to C-6 also.

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Post  supervel45 on February 28th 2014, 4:25 am

http://www.classic-cougar.com/tools/speedocalc/speedocalc.php Try this one, the first one would not link.

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