Cummins12V98 wrote:
"The real reason you don't see Duramax competing in the max tow rating race like Ford and Ram is that almost no one tows that heavy! "
NO WAY that is true. I tow 23-25K combined with my 15 RAM and it handles it all within the SAE ratings. If GM could get SAE to rate them at 30K towing they sure the HE!! would. There are plenty of people out there that tow heavy that are and are not RVers. Plain and simple the Allison is at the end of it's power limits.
I agree with transamz9, I am sure I can out pull you on any grade you choose at any weight you choose. ONE major reasons I have 6 gears and you have 4 with a horrible 3-4 shift.
I pull over 30K combined with a Duramax. No issues to date. Pulls great.