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View Poll Results: Should I upgrade from 3.55 to 3.92 rear if towing camper trailer with new 2011 Hemi
No 0 0%
Yes 8 100.00%
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  #1  
Old 09-05-2010, 12:05 PM
postman postman is offline
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Default Rear axle ratio choice on 2011 Ram Hemi

Will be ordering a new 2011 Ram 5.7 Hemi shortly. I will be towing a medium sized 28' camper with this truck as well as a fully loaded snobile trailer. It comes with the standard 3.55 rear ratio, should I upgrade to the 3.92 rear ratio and if I do, what would be the gas mileage difference on average.
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  #2  
Old 09-05-2010, 12:09 PM
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Not sure what the mpg difference would be...that's really a function of the driver. How much does your trailer weigh?

Welcome to the forum. Take a few moments and introduce yourself in the Newbie Section.
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Old 09-05-2010, 12:15 PM
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The camper trailer is about 4500 lbs with another 1000 plus pounds allowed for load capacity.
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Old 09-05-2010, 12:17 PM
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I'd go with the 3.92 for better towing power as a 3.92 is a taller gear which will provide for better low end torque.

The 3.55 will work as well, it will just be lower out of the hole.

Will you be towing a lot? Will you be towing other loads?
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Old 09-05-2010, 12:44 PM
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Along with better towing response the 3.92 gears are limited slip which will be better for snowy roads.
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Old 09-05-2010, 12:46 PM
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I would say 3.92, the mpg difference is very small, you can easily make it back up by a couple simple mods to increse airflow to the engine.
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Old 09-05-2010, 01:07 PM
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welcome to this ForumZ from San Diego

if i were going to be towing much, or using the truck to haul a bed full, or live where there will be hills, or less than perfect climate, i'd go with the 3:92 ratio
i would also be checking out the 2500 series trucks for several reasons.
a 1500 series comes with non pulling gears as standard, 3.92 are an option
2500 series have 3.92 as standard, its just a bit heavier & from what i have seen on here, the mileage is within 1 mile per gallon of the lighter truck.
remember the 2009 - 2011 trucks are all the same design, the only thing different are minor things, like a locking tailgate, radio types, brake controller, etc
the 2012 will be a different body style & possibly a bigger engine as an option
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Last edited by GTyankee; 09-05-2010 at 01:09 PM.
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Old 09-05-2010, 01:11 PM
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Quote:
Originally Posted by GTyankee View Post
welcome to this ForumZ from San Diego

if i were going to be towing much, or using the truck to haul a bed full, or live where there will be hills, or less than perfect climate, i'd go with the 3:92 ratio
i would also be checking out the 2500 series trucks for several reasons.
a 1500 series comes with non pulling gears as standard, 3.92 are an option
2500 series have 3.92 as standard, its just a bit heavier & from what i have seen on here, the mileage is within 1 mile per gallon of the lighter truck.
remember the 2009 - 2011 trucks are all the same design, the only thing different are minor things, like a locking tailgate, radio types, brake controller, etc
the 2012 will be a different body style & possibly a bigger engine as an option
All excellent points.
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Old 09-05-2010, 10:39 PM
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Welcome to the forum postman!
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Old 09-05-2010, 11:44 PM
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Hello and welcome aboard the ForumZ. Great to have you!
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