Originally Posted by Saber123316
so I was thinking because of the extreme weight of these components once you start pushing big numbers around what time or HP should a guy be looking at swapping out 6.0 internals?
Really hard to say as you'll find a lot of variation in what one 6.0 will take vs. another seemingly identical 6.0 will not. A lot like the 5r110 tranny. Some will take upwards of 500hp stock w/ no problems while others will crap out at 400.
If you are in the 650+rwhp range w/ a stock lower end you are definitely going to be pushing the limits. Not saying it won't live though as Redneck and some others are in the 700+ range with stock lowers and prove it daily.
I think you'll find that most failures will come w/ turning higher rpms. Regardless of the power being put down, it seems the LPOP gear failures (as well as windowed blocks) seem to mostly be related to turning 4200+ rpm. Again, not always, but a lot.
Lastly, I guess it really boils down to which way you want to go; run it 'til it breaks or build it up to take it before it does.