6.5 Optimizer package question

[Chadshell]

New member and this may be covered in other posts, although I've been unable to isolate this question. I just received my m998 and it has the 6.2, I'm looking at purchasing a complete 6.5 NA, with 4 speed transmission and correct transfer case. Outside of the new crossmember needed, what other things should I be aware of? I've read where others spoke about new shafts, but was unclear if that was required or not. This is my first HMMWV, so any input from this wealth of knowledge would be greatly appreciated!

 

[Action]

Look for the parts manuals online. You will need propshafts, computer, wiring, shifter, linkage, etc.

 

[Thesaint025]

So I'm right there with you, there is absolutely a lot of confusion, but I think I have narrowed it down a bit. Thanks to the plethora of knowledge here, please note I have not completed this transplant myself and I am strictly lending my absolute opionion based on my own research just an idea of items to build off of!
1-6.5/4l80 body harness
2- drive shaft's front & rear (possibly yoks)
3-shifter
4-power steering lines (if yours where cut )
5- 6.5NA engine harness
lastly multiple sensors if any of yours are cut or damaged!
Your ground kit may work from the 6.2 and I hope you have trans and start control boxes!
Good luck!

 

[Chadshell]

Thanks for the responses, much appreciated! Now off to figure out this black smoke issue with the current 6.2. If anyone has any ideas, please let me know. I understand it is a fuel/air issue, so maybe try changing out the fuel filter? Air filter is new

 

[Action]

"Most common causes of black smoke are faulty injectors, a faulty injector pump, a bad air filter (causing not enough oxygen to be supplied), a bad EGR valve (causing the valves to clog) or even a bad turbocharger. Some of these are easy fixes."