6.7 Cummins vs 6.6 Duramax
As someone who knows next to nothing about Diesel engines, I am trying to figure out the strengths and weaknesses of these to. Any opinions would be appreciated.
Forum Discussion
No experience with the 6.7 but I have a 2009 lmm and a 2013 lml no serious problems with either. The 09 had the DPF fall off at about five years and was drag raced for two years(truck will do a 12.95@103mph in the quarter@7600lbs)with one glow plug replaced to date. No problems with the 2013 except for a bad def tank heater replaced under warranty.
