6.7L Cummins Forum

I was wondering on this whole 2500 3500 thing I have added the 3500 leafs and springs to my 2500. the only thing diff I may do is add the dully wheels if needed. my truck is the HD version of the 2500 2007 6.7L. what I would like to know because my friend owns the 3500hd and ive looked it over compared to my truck is why such the differece in towing and payload specs is it just the springs and dully wheels. Is it a safety thing aposed to weight capacity for the trucks parts because the parts and frames are the same to the naked eye. I believe the gcaw for the 11.5 aam axle is over 9000 lbs and im not sure if that makes a difference in single or double wheel axle

It's all about the rear axle. 10.5 inch ring gears on the 2500 and 11.5 inch ring gears on the 3500 and I thought I read somewhere that the 2500 with the 6.7L and manual tranny also had the 11.5 inch ring gears but I don't know if this is true. (Anyone know?)

The standard rear axle ratio is a 3.73 with a 4.10 ratio available as an option which gives an additional 2,000 pounds of towing capability. The Dodge Ram 3500 rear axles have a Gross Axle Weight Rating (GAWR) of 9,350 pounds and the Dodge Ram 2500 GAWR is 6000 LBS. Both the Ram 3500 and 2500 have the same GAWR of 4410 LBS for the front.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

I have 5,200# GAWR in the front.

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2008 Dodge 2500HD 6.7L 4X4 Laramie
Edge insight, Amp tailgate step, 4" Boss Bars, rear air bags with compressor, spray in bed liner

Pardon me, I just noticed you have an 08 and the front end was redesigned in 08.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10