Not stock IP or turbo, but head and block, albeit with a better head gasket and studs. I think you may have missed that bit or I did not say so clearly.
My old work truck lived the last 20 years turned up like that and beat to hell and back. the MW and P pumps are really, really popular among the pulling and race crowd for their ability to flow massive volumes of fuel reliably. Ive seen a few hilarious work trucks over the years. My personal truck is a 300 RWHP 7.3 Powerstroke. Ive put 40k miles on it set up that way, about half of those towing pretty heavy and it has nary a peep. Be happy to post oil analysis if you do not belive me.
The IH engines are hilariously beefy, the DT 360 makes the 5.9l cummins look under built and those are popular in the ligher tractor pulling crowds for 1000hp builds. From what I understand they only swap turbos, injectors, and pumps till the head gasket blows and O ring and stud them. They last a long time (for a 1k hp tractor at least) if you change the oil after every single run.
Im not saying it isnt possible, just that your vastly understating the amount of work to do that to a dt466, i make my living as a mechanic, occasionally working on chainsaws, but mainly working on medium and heavy duty engines in fire trucks and long haul trucks.
The p7100 fuelpumps on the dt466 and cummins isb 12v is a damn good pump, but once you start pushing more fuel at a higher pressure it reduces its reliability and shortens its life expectancy.
I can piont out a dozen cummins isbs with well north of 1 million miles. I have not seen a even a lightly modded engine make 750k. I have only seen a handful of dt466s that gotten to 1mil miles.
Tractor pull engines are a whole different deal than work truck. They dont run those engines long enough to heat soak the block, and if they did, the cooling syystem would not be even close to enough. They would all heat seize before you got a days worth of work out of them. If the injection pump didnt scatter due the the fuel cavitation or preignition in the lines at the pump. Or the valve stems fatigue. Or the liner o rings fail and pump all your coolant into the block hydrolocking everything and shooting rods through the fender....
Everything is relative, what works in a pull truck or tractor is not necessarily going to work in a work truck, and vise versa.
Oh, and if you are o ringing a head or block, its no longer stock. That can be 15+ hours of labor and machine shop time depending on how far you want to go with it, not counting removal/install time.
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