went from 4wd to 2wd
Having had a 92 4x4 Cummins and now driving an 01 4x2 Cummins, I would have to agree with Mike's comments. I really appreciated the 4-wheel drive system on my old 92. I could leave the hubs unlocked, and use it as a 2wd low range, and realize the benefits of better fuel economy with the hubs unlocked. I also have nothing but praise for the gear-driven NP205 transfer case in the older trucks. I don't think I would have a newer 4-wheel drive Cummins with all the issues I have been reading about vibration, the fact that the front driveline can't be totally disconnected, and the penalties with respect to fuel economy. Despite the fact that we live in hilly Pennsylvania with marginal snow removal services, I find the 2wd dually much more enjoyable overall, especially when hauling a slide-in camper. It sits lower to the ground, handles better, it's more thrifty on fuel, doesn't exhibit the vibrations and hassles of the front drive mechanism, it's lighter in weight and enables me to slip just under the class II toll classifications on the turnpike!
Oh yes, and you could say I enjoy a "challenge", as this dually is horrible in the snow when empty. However through the folks on the TDR I've learned some tricks such as Cooper Discoverer M&S tires on the rear, proper loading, and of course tire chains.
Steve