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Old 04-17-2010, 05:27 PM
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jimbo jimbo is offline
Dodge Ram Forum Senior Member
Join Date: Mar 2010
Location: Oklahoma City
Age: 51
Posts: 170
Gender: Male
Vehicle: 2007 Dodge Ram / 5.7 HEMI
Trim Level: Big Horn Addition
Color: Fire Metalic Red
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Originally Posted by srt10madness View Post
Thanks but wouldn't 4:10's help my gas milage on the highway and also give me better top end speed? Wouldn't my rpm be lower? So off the line 4:10's would be slower but higher in the rpm it would be improved.. Also why 3:55's and what should a set of used gears cost?
The lower the gear ratio the better the gas mileage, but if your into running 33" tires or bigger 4:11's and 4:56's would be ok because the sheer height of the tire is compensating for that tall gear. The higher the number the easier it is to turn tall tires but at the same time those tall gears can over rev the engine and cut your top end speed way down.
As for the 3:55 gearing one can either get the 3:55's or the 3:92's stock in the Big Horn Addition, it depends on what your going to be using the truck for. The 3:92's work out great for towing my wife's horse trailer and I still get between 16 - 18 mpg and that's with the MDS crapola disabled. Got to love the Diablo Tuner....
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