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Old February 16th, 2013, 11:03 PM   #234
ckupq
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Join Date: 11-07-05
Location: Cedar Rapids, IA 52402
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Originally Posted by dline View Post
my 04 silverado gets 11mpg going upnorth, shit, think something is wrong with it, yes it has 33" tires

my 11 charger RT 5.7L gets mid 20 mpg's very happy with it
What are you doing with your silverado? My 05 5.3 with 33's gets 17 from cedar rapids ia to Kzoo. I get closer to 19 when I go north and slow down for the UP.
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