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PLEASE don't put gas in it! LOL!

I've seen that truck pull in videos, and it is impressive. However, that guy has to be an idiot for not having a guillotine on it. Every diesel pulling tractor in every class except farm stock is mandated to have one at all of the pulls that I have gone to. That was a 6 figure oops.

Not just driving style and intended use- transmission, tire size and gearing are very important. Chris has given info on turbos that are very good all-around options.

Anybody have 25-30k laying around??

I think having to provide a warranty would stop them cold. As far as I know, the Army just buys another engine and throws a broken one away (or has their mechanic fix it).

National Guard units will be needing 6.5s for a long time. Eventually some takeout motors will probably become available through places like Ted's.

Awesome build, Chris. Hopefully that NV4500 holds up to everything.

Take the GMx turbos and sell them to someone with a 2.0 four banger who can use them. IMO, a 12cm housing hx35 is too tight, and a 14 only slightly better (gearing and transmission are big factors here). I have 4.10s with an automatic, and when I can afford the right hx40 it will go on my truck.

....also had to swap passenger side valve cover. Motor was spotless inside.

My 6.5 came from Ted's (late '15,early'16). It is an '07 military motor (n/a). All I did to it was swap the oil pan and install my pump,injectors, intake and exhaust. 30k hard miles so far. What they're selling since then, I have no idea.

Just my personal experiences here. Not trying to prove anything or make any claims as to what works best. I run a 130gpm pump with a 190 GM thermostat. I start my truck 5-6 minutes before I leave for work (even in summer). I climb a mountain 1 mile from home and usually am moving pretty good up...

Cylinder walls are 1.5mm thicker- that's a plus!

Big T, what are you gonna do when everything on the Burb is new/fixed?!

Last pic didn't go through.

Not a GMT400 or a 6.5, but life isn't fun all the time.... New rocker panel is on the way, new cat-back exhaust (first attempt at building one), new brakes lines, and a lot of Fluid Film on the frame.

Those fender flares seem to be like the ZR2 units. I almost guarantee that the studs on the flare will snap off (not that it matters since you're replacing them). I have to get a new set for my little truck once I finish excising the cancer.

I don't know if it makes a difference or not, but I only use thermostats from GM.

Stoney, something has to be unhappy in there. I have the same w.pump you do with a Duramax fan and a 180deg single thermostat. My truck will run up to about 180ish before the thermostat opens, and then will usually run about 170ish even at 95degrees outside with the a/c on. Towing stupid amounts...

What?! 90 is a beautiful road! But I did notice that once you're off the the interstate, things deteriorate quickly- thinking of Big Timber out towards the Natural Bridge area (Boulder River).

TRB, if you are not afraid to tweak things yourself, the FIRST thing I would do is remove your new fan clutch. Look at the tab on the bi-metal spring where it anchors into the aluminum housing. It will be 1/4-5/16" long. Straighten the tab out and bend a new one that is about 1/8" of an inch...