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Re: Help! What am I missing?
Your speedometer is off with the gear change.
MPH=RPM X tire diameter-divided by-gear ratio X 336
This should give you your true speed.
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56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
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