I really appreciate and am impressed with the massive load carrying capacity and tow ratings on the newer "half ton" trucks. They would have **** out the transmissions and running gear on one ton trucks not so long ago.
But, MAX load / tow ratings are bumped for sales. What something can haul once to post an impressive figure and paint the picture of a heavy duty truck is one thing. What the vehicle can safely and reliably haul day in day out, is another thing. And at what cost... mechanically over the lifetime of the machine.
I am all for Over-Kill 99% of the time. Like having Four Wheel Drive. If one can afford it, why not have the peace of mind, even though it rarely gets used. If one were on a very strict budget, then that is one thing. We all get along with what we can -or try to- afford.
But, I would much rather have the option of pulling a lever and driving myself off the soft sandy shoulder of a highway, than calling a tow truck. That is just the tip of the iceberg. Same philosophy; I would much rather operate well within the parameters, not overstressing a machine. Why worry about cooling, cooking bearings, smoking brakes or burning up transmissions, etc running right at, or above the limits of a machine.
Getting back on track, the engine is just ONE piece of the puzzle. As stated before, there are things you just get with a 3/4 ton vs a 1/2 ton besides the powerplant. Such as the solid axle vs a IRS front end on the 4x4 models, just to name one more item.
In some peoples eyes, my 1500 4x4 with the 5.7 is the same as my 2500 4x4 Power Wagon, just because they use the same displacement gas motor. They couldn't be any further from the truth. One trip down the road will tell you that, loaded or empty. We are no longer in the age of a 250 Hp Small Block gas motor, stuck married to a 3 Speed Auto. With the Hp/Tq these modern gas engines put out, combined with the ability to run deep rear end gears and STILL have solid overdrive for freeway cruising due to the benefits of the modern Six or Eight speed transmissions, why not? They are quiet, smooth, require less maintenance, get decent fuel mileage, can run regular grade gas, don't mind being started and stopped repeatedly in town doing short hops and are lasting several hundreds of thousands of miles, unlike the average over worked small block v-8's of twenty years ago. Plus, the Dodge 5.7 Hemi may be the "Chevy Small Block" of our day.... they are being put in everything, have been around long enough now that all the bugs are worked out, and for those coming up on the second and third hand vehicle (do it yourself territory) parts availability and pricing is going to be about as easy on the brain and the wallet as it is going to get.
True, if I were hauling a huge 5th wheel or triple axle horse trailer, or hauling mega miles either personally or as a commercial vehicle, the Cummins would clearly be the better choice. But, for what MOST people by far, haul, tow, pull or in the amount of hours or miles they log, rarely do they really need that Huge capability, other than for perhaps bragging rights.
There is nothing wrong with a 2500 powered by a 5.7, and especially not the 6.4 Hemi gas motors, when equipped with the proper gears and other towing type options.
Around here, even in our harsh conditions, the vast majority of 2500 or 3500 pick ups with the Cummins just cruise around empty, hauling kids or dogs around. I don't' see a real need for 800 ft/lbs or the buckboard ride of either of those trucks when not being used for what they were designed for.
Another big plus for the Power Wagon. Gas motor, soft riding 3/4 ton platform, but it has the strength and capability for when it is needed. Best of both worlds IMHO.
I'd pay for the Power Wagon option over the Diesel mark up any day of the week. That may just be me. But, there is some sense in it.
Even when I bought the truck, the salesman looked at me awful funny when he noticed the 5.7 Hemi fender badge tag on it. Some people just don't get it. And that is fine by me. To each his own. But, in NO WAY is a gas motor inappropriate in these trucks.
Having been in Law Enforcement for the last 25 years, I have seen a lot of American Made V-8, rear wheel drive platforms come and go. In the last Five or more years, I have personally operated and witnessed the abuse the 5.7 Hemi Chargers go through. Things NO ONE would ever put a personally owned vehicle through. From cold starts to running wide open throttle for extended periods, to idling for 12+ Hrs at a time in everything from triple digit heat to freezing temps. Even with just a little common sense, compassion and regular maintenance, these things should last a good long time.
It may be odd to be running at what feels like a gear too low... they like to rev along when under a load, and they do feel a little "soft" on the bottom end in regards to torque. But, they soak it right up. I've pulled the 'Baker Grade' outside Las Vegas all loaded up in 118 Deg and the truck never even wimpered, the fluid temps all barely fluctuated and it never smelled, burned or dripped a drop. Once you get used to the Revvy feel of it, and it shifting and doing it's computer controlled thing, it is all good. I imagine the new 6.4 will be even better, having fixed that soft off idle, with a little more torque, and the re-introduction of the cylinder deactivation feature, the mileage will probably be right at the same, if not better than the current motor.
OK, enough out of me. It's all about opinion and perception. Some people will never be convinced or will even try it. But, they are really missing out.