pilotblake Posted October 29, 2009 Share Posted October 29, 2009 After responding to a different post I got to thinking about it and didn't want to hijack that post. If my truck has a 700R4 with a 205 or 207 right now for the life of me I can't remember which and 3.73 gears, how do I figure out what the appropriate speedo gear is needed to get my MPH back to the right speed. Right now 45 seems to be about 60 by GPS. What more info is needed? Link to comment Share on other sites More sharing options...
Geonovast Posted October 29, 2009 Share Posted October 29, 2009 Sounds like you need a gear with about 3/4 as many teeth as the one you have now. But I may be wrong. I know there was a chart somewhere, but I think it was for a 231, which uses a different set of gears. Link to comment Share on other sites More sharing options...
Oizarod115 Posted October 30, 2009 Share Posted October 30, 2009 http://gojeep.willyshotrod.com/HowtoSpeedoGears.htm :D Link to comment Share on other sites More sharing options...
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