73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: JCKustoms on December 16, 2009, 05:32:25 pm
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If anyone is curious. Here is a little info on speedo gears for an NP208.
I have 35's (actually 33.4 when measured with a tape) and 4.56 gears and I am using a
15 tooth drive gear and a 45 tooth driven gear and my speedo is only off .3 mph at 55! I know there are speedo
calculators out there, but they didn't compute correct for me. So I did the trial and error method til I found
the right gears ratio! Hope this helps someone! :)