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Depends on your driving. I went to 4.10 from 3.07 and my mileage went way up around town. Not so on the highway. Your results will probably be similar. Needs less gas to get going with more gear, but will take way more on the highway.
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44 Willys MB
52 M38A1
64 Corvette Coupe
68 Camaro 'vert LT1 & TH700
69 Z/28 355 12.6's @110
69 Chevy Short Step 4 1/2"/7" drop
72 Jimmy 4WD 4spd 4" & 35's
02 GMC 2500HD 4x4 Duramax
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