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Old 03-22-2011, 07:46 AM
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ProudDaddy ProudDaddy is offline
Dodge Ram Forum Junior Member
 
Join Date: Feb 2011
Location: Houston, TX
Posts: 30
Gender: Male
Vehicle: 2011 Dodge Ram 1500
Trim Level: Hemi Sport
Color: Bright White
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Me and my brother have identical trucks except for one thing...the rear-end gear ratio. He has a 2009 Hemi Sport with 3.55's and I have 2011 Hemi Sport with 3.92's...He says his average is 18.3mpg with 21,000 miles on his truck and mine is showing 17.4 with 3,000 miles on mine. I don't think there is much difference in fuel mileage, but you can really tell the difference in bottom end take-off with the 3.92's, that's why I went with them. I try to set my cruise at around 73 mph, which translates to about 2,000 RPM's...anything over that and I start seeing my average mpg fall off.
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