The difference between Military and Civilian 6.5 turbo diesel parts??

[94 k3500 nick]

Whats the difference between the Military 6.5 turbo diesel parts and the Civilian 6.5 turbo diesel parts? is there any? if so cam, lifters, gear, tac drive, rocker arms, ect...
is there any performance gain HP/TQ if switching from civilian to military parts, and any mpg improvements or any other benefits to the switch at all???

let me know what u guys think and know thanks

 

[WarWagon]

Oil pans. Precups are the biggest difference. Emission exempt military engines made precup selection different. Military manuals call for .020 oversize pistons only rather than the several sizes available for 6.5's. 12 vs 24 volt stuff.

Other than that you get into the AMG P400 and Optimizer re-engineered 6.5 engines that are stronger than the crack prone GM design/materials. Cooling is better on the re-designed engines.

IMO nothing that "goes faster" is different on the GM stuff. The redesigned stuff could be faster.

 

[Will L.]

All the parts in the ip are hardened to run non lubricated fuel and not wear out as quick. Unfortunately the injectors are the same. The oil pan as mentioned is different, it is the same pan as vans use. Turbo is a centermount gm6 turbo. All the metalurgy in the optimizer is better: block, heads,crank,cam.
I have not seen a broken block or broken crank optimizer yet, seen 2 harmonic balancers come apart and all was ok.

 

[schiker]

The head manifold angles are different for center mount turbo vs a civilian truck heads. The blocks are the same overall. There are just a few revisions over the years like metric bell housing bolts and oil cooler port size but that was civilian revision too.

The military parts should be OEM quality parts so that is a plus. Aftermarket parts have a wide range of quality depending on mfg, brand etc. No real advantage to military parts over quality parts IMO.

 

[WarWagon]

Several "Military" engines being discussed. HUMMER and the 1980's Blazer and 1 1/4 ton pickups are different in some ways. Not sure what engines use the VAN head design.

The 6.2 and the bored out 6.2 aka the 6.5 are the same engine in my book with minor differences.

 

[Burning oil]

You could go with roller rocker arms.

 

[94 k3500 nick]

the military parts the block it came out of was from a 2009 if that matters.
any other benefits or improvements from these parts over stock civilian parts?