All right, I am now looking at several options for the next camper.
I have a bunch of questions about the Dodge Cummins (from 2005+, 4x4, single axle).
I know these answers are out there in the Google world but I figure some experts here could answer these more quickly...and with more personal interactions...
So here you go, I hope someone can help:
-Is the new 6.7 much better than the 5.9?
5.9l by consensus and experience.
-Is that true that the automatic transmission that came with the 5.9 had some issues (slipping)?
Yes
-Is there any issue with the manual transmission? How does it feel to drive this truck with a stick shift?
No experience.
-what are the different gear ratios in the rear diff? How do I easily know what's in there?
3.73 or 4.11 for 3rd Gens. Check dealer option list. I prefer the 3.73 for fuel economy at higher hiway speeds.
-what is the best combination (tranny/gear) for best fuel economy?
3.73 in 3rd Gens
-a lot of them I see for sale have high mileage (over 100000 miles)
Should I be worry about that? Or is this a sign the engine last forever?
I see 350-500k quoted frequently, too.
-my assumption is that the payload for a stock single axle quad cab 3500 is about 3000 pounds. Is that correct?
Check this, but for DRW Rear Axel rating is 9350# with ~3500# on the rear unloaded, yielding 5650# in Rear Axel capacity and higher tire/wheel capacity.
-do they have other issues I should be aware of?
If you are considering the Quad Cab (only extended option for Long Bed in 3rd Gens) the back seat area is a bit tight for adults in my experience.
-Is there any Dodge dealer in Central/South America?
thanks, I appreciate