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Old 10-17-2010, 09:27 PM   #8
bubba327
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Join Date: Mar 2009
Location: Star Idaho
Posts: 1,413
Re: are 3.08 gears good with 200r4?

Do not forget that tire size makes a difference also.That going from a 235/60/15 (26.1") to a 235/70/15(28") is difference of over 200 RPM at 55 mph. Find a Free online RPM gear calculator and plug in your numbers to get RPM's
In my 64 with the 235/60/15 tires and TH350 with 3.73 gears , I am screaming at 65 mph and freeway 75mph is Impossible.
Just bought a 3.07 rear end to install.
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