That weighs 1/3 of what the truck does. Could you imagine the handling!?
Dodge Ram 1500
Engine: 5.0L Cummins 90-degree V-8
*At least 320 hp and 500 lb-ft
*Aluminum heads and an iron block
*Exhaust gas recirculation (EGR)
*Cummins-built variable geometry turbo located in the engine valley
*Catalytic converter and diesel particulate filter (DPF)
*Common-rail fueling with piezo injectors
*Engine weight 710 pounds
*Selective catalytic reduction (SCR) through the use of liquid urea
*Chain-driven single overhead camshafts
*Six-speed automatic 655RFE transmission
*10 1/2-inch ring gear diameter in the semi floating AAM rear axle
MPG: (Diesel Power December 2006 issue titled, "New Cummins V-6 and V-8") A Department of Energy test found the 1/2-ton Ram delivered 24.6 mpg.......
Umm, I thought the 2nd gen explorer weighed about 4,000lbs (4dr). I'm not saying it would be a corner carver, but THAT engine doesn't way 1/3 of the truck, it's more like a bit over 1/6. Besides, what does a fully dressed 5.0L weigh? Gotta be about 400lbs.
If your going to all this trouble, you could setback the engine, to minimize the effect of the weight. Heck, it might handle better than a stock explorer. Of course, you can also do a coil over conversion, and just use the appropriately heavier rate springs.
Yeah, there's no way this would be "practical" but it is doable, if you have deep enough pockets, and a creative enough mind. You'll never get your money back out, but I bet you'd get a magazine cover or 2, if done right.
Keep on thinking. You'll never recongnize the good ideas, when they come, if you haven't had any "less than good" ones to compare to.
That's my wisdom for the night. I'm going to sleep now (ok, soon)