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Old 04-08-2011, 08:54 AM   #21
Shyguy
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Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
Re: ITT i track my mpg.....cause it sucks!

Here is something some people do not make sure is if the speed-o-meter is correct. We have a tendency to put non-stock tire sizes on our trucks which throws off the speed-o-meter and the mpg calcualations.

Neither of my trucks read the correct speed.
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'67 Chevy C-20 short stepper - build complete, 454/SM-465.
'75 C-30 Single Cab DRW-350 small block/NP-435.
'77 GMC-6500 Dump Truck, 427 Tall Deck.
'92 GMC K-3500 Duallie, 454/4L80E.
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