Originally Posted by Blownsquidink
I just bought a 2011 2500 4x4 with a 6.7l cummins and a manual 6 speed. Only to find out that I'm down almost 200 lb ft of torque from and automatic truck. Does anyone have a clue why? And an even better question, what's the differences between the two engines, so I can get the hp and torque a manual deserves...
because the G56 manual is marginal behind the Cummins in some situations. so they de-rated the engine to help it live. IMHO when they dropped the NV5600, they stopped selling a manual that I will own!
If I want a manual, than I will retrofit a roadranger in!