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  #21  
Old 02-25-2011, 05:56 PM
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Mcbride Mcbride is offline
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Quote:
Originally Posted by RamTech View Post
The info I posted is straight from the Chrysler service info specs. Looks like one of them is dead wrong (can't say I'd be surprised to find out the service info is wrong since I've found errors in it before).
I was just going by the information on the Dodge website, and it matches the info in their brochure as well.
So in case anyone is curious, I am leaning towards the middle of the 3, and going with 3.73 gears.
I will not be going to larger tires, and rarely will i tow more than 11,000 pounds. so the 3.73's should be a nice compromise....At least I hope so.
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  #22  
Old 02-25-2011, 07:18 PM
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I have a 2011 Ram Cummins TD in order to tow your 11,000 you will need the 3:73 axle. I only have 2500 miles on my truck and get 15 around town and better than 20 on the highway so far. I have a Crew Crew Laramie with the 6'3" bed. The best option is the heated steering wheel!!
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  #23  
Old 02-26-2011, 07:14 PM
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I've got pretty much the exact truck you're looking for, wikth 3.73 gears and I love the way it handles everything I throw at it.
Scott
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  #24  
Old 02-28-2011, 03:30 PM
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Well its done, order a truck, and yes with 3.73's.
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Old 03-04-2011, 12:06 PM
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Quote:
Originally Posted by Mcbride View Post
Thanks for all the replies.
I know the 3.42 gears are stock, just wondered if i should stick with them or go for a higher ratio.
I do not want to ruin the fuel mileage, but also do not want it to struggle too much when towing, despite its being a light trailer for a diesel really.
I have read many other reports and opinions with rergards to rear axle gear ratios. The consensus with regards to your wants is that the 3.73 gears are the best mid range that will provide descent pull and MPG. After learning more about the ratios and performance, I was a bit worried that my new truck may not have had the best gears for my needs. According to Dodge's website specs all 2011 Ram 3500's come standard with 3.42 gears and my needs fit more towards needing 3.73 gears. So I found my dealer sticker price sheet and was so happy to see the 3.73 gears were option added to my truck and to be sure, I confirmed this with the dealer.
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  #26  
Old 03-08-2011, 10:28 PM
malibupro malibupro is offline
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Got a 99 cummins 5 speed and have stock rear end. been looking to increase mileage and want to drop a gear ratio but cannot find below 354's. Tow one car back from auction 80K miles per year.
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  #27  
Old 03-10-2011, 02:23 PM
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Quote:
Originally Posted by sledpuller2006 View Post
well sorry i dissagree. i have an 02 with 4.10 and our pulling truck has 4.10... ahggg. the sweet spot for milageis 1800-2100 rpm cummins really doesnt make power after that , even my pullin truck the dyno chart starts to fall rapidly after that... but wheel speed is the key aso there.. they make the torque i as 3.73 or even heck 3.42 thats trully what im thinking in throwing in the 02 i drive dayly. DO NOT GO WITH 4.10 u will lose 3 to 4 mpg. Sorry if i pissed anyone off but its FACT!!!!!!!
Sorry but I disagree with your disagreement. Sweet spot for mileage is under 1900 all day long. And they do not lose any power after that, in fact their monster power is just after 2200 RPM. If your trucks power falls on a dyno after that, something is definitely wrong.

Good choice in going with the higher (numerically) gears. Those 3:73 are a decent mid-level gear, but I wish 3:90's would be an option. Would have been great for my 40' 18K toy hauler.

Side note: My RPM is 1900 @ 70 MPH with my 265/70-17's. If I drove the speed limit AND towed at the same time, I would never be able to leave 3rd gear. (48RE)
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Last edited by rsg1963; 03-10-2011 at 02:26 PM.
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