2015 powerstroke 440hp/860tq

LimogesMan wrote:

msjdbman wrote:
Word on the GM truck forums is that the Duramax will see an update in 2017 to around 445 hp and 850 torque. I guess time will tell, as always.

IIRC, the 6.6L Duramax is maxed out in tuning for power / emissions ratio. Isuzu built a great diesel engine, no need to play the leapfrog game.

I don't believe achieving the hp (445) and meeting emissions is the main issue on their hands. The DMax easily handles much higher power levels with all stock components...yes by aftermarket tuning today. It's my understanding that much of anything over the 400 hp/800 tq figures is where the Allison begins to see problems in it's current state. The way that the Allison operates/shifts for the LML was changed compared to the LMM to handle the difference from 360 hp/650 tq up to the current 390/790 ( or what ever it is) levels the LML has. The Allison can be beefed up to handle these higher power levels, but at a cost that the average new truck buyer might not be real thrilled with. Again, it will be intersting to follow and see where GM goes with this. I really don't care, since I'm completely happy with my LMM. I don't figure that I need to have my rig accelerate like a Corvette :B