Trading in 2008 ram 5.7 hemi. Trying to decide on 6.4 or cummins. Don't like the extra cost of cummins and seems like a lot of potential for costly problems down the road. Towing will be 6-7 times a year around 8000lbs. Don't want to be under powered but don't want to get destroyed on gas mileage. Was thinking of 6.4 hemi with 4:10 ratio. Anyone have experience with this setup and gas mileage etc. I don't mind spending the extra if it would be worth the cummins in the long one but I don't like problems either

 

You should do just fine with the Hemi and 4:10 although I think the new 2500 gassers come with a motor bigger than a 5.7. I think its also a 6.4.

 

Gzapper,

An excellent choice in truck! Both engines are tremendous and are built to pull. The Cummins diesel will provide additional towing capacity. The Cummins does have the option of either a 6-speed manual or 6-speed automatic transmission, while the 6.4 liter Hemi is mated to a 6-speed automatic.

Here is a link indicating the towing capacity of each option: http://www.ramtruck.ca/en_dir/pdf/20...500_Towing.pdf

 

Hell, I don't even see why you need a 2500. I definitely would not bother with the Cummins unless you have big towing plans in your future.

 

hi there new to forum and very excited about new 2015 2500 hemi 4x4!!! i was going to ask how much air pressure i should have in my 295/60/20 nitto trail grapplers.. they are "E" rated and currently have like 70 p.s.i. all the way around.. it sure is a bumpy ride!! was wondering if or what i should be running in these.. thx in advance for help!

 

I have "E" rated tires as well. You can usually go up to 80 psi on these tires but that is only for towing. when I don't tow heavy loads I keep mine at 50 psi. I actually go to 70 psi when I tow the camper which is 8,000 lbs dry.