Question: Why do you want a 4x4? If you've gone thus far in life without one, without even knowing the major differences between 4x2 and 4x4, Why are you thinking of getting one?
To me 4x4 offers ONE thing over any 2wd vehicle: Off road performance. Seriously. With the right set of tires and proper weight balancing, you don't need 4WD on any paved surface. How do you think Semi's do? Motorhomes towing cars in the winter?
If Big Dave's Ford can tow 10,000lb trailers smoothly down the highway, what does he need 4x4 for? Boat Ramps maybe? Possibly if the ramp is wet and slippery. Solution? ARB or Detroit electronic locker and air the tires down. Instant boost in traction. Still stuck? Wait for the ramp to dry, or put down some sand or dirt to help. Don't spin the tires, "feel" the traction limit and slowly work into it.
There is no reason for the average person needing 4WD. Driving in hazardous conditions, ie snow/ice storms? Well, if you get caught in one, you must live in a place that gets them, so you should have proper tires selected for the season. Don't skimp EVER on tires. They are your life. If I can drive my grand prix in the ditch with 6-8" of snow and come back out at 55mph (semi drifted into my lane, I had to avoid him) with snow tires (and a few years experience) I'm pretty sure the average driver can manage. Chains are an obvious solution, stop put them on, continue. Go ice traction.
Stick with your 4x2 S-10, and watch the weight limit of the diesel motor. the 4BT Big Dave suggested is even too heavy for my 4x4 Sonoma. the Independant Front doesn't like the added weight. Heck, even the QB3.3 (3 cylinder Cummins) is still heavy, although not much more than the stock 4.3. I'm considering getting the QB3.3. 300ft-lbs at 2100rpm? Heck yes, the 4.3 can't even do that in stock form. I read over on the 4btswap forums someone with the 3.3 managed 27mpg with a 10" lift, 35" tires, front solid axle swap, and minutes after installing it. Expecting tuned-in to net 35+mpg. I'd like that.
That 616 has at least 130 Nm and 65hp.
Your 2.2 has 120hp and 190 Nm.
let's hope the diesel is a bundle more effecient? As it certainly isn't more powerful. I'm thinking it would possibly be a toss up, maybe sided towards the 616. 130Nm at 1800rpm, I'll bet the 2.2 is less than that, but hard to say. Proper gearing is going to play a major role in whether the 616 is or can be more FE than the 2.2.
Long post, I'll stop now.
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