stro1965 wrote:
Did I mess up choosing 3.73’s? I thought it a good compromise between 3.42 and 4.10.
Is your combined less than 29K??????? If yes you did! Is your combined more than 29K ?????? If yes you did!
I have towed HEAVY with both 3.42's and 4.10's. The 3.42 performed great towing a combined 29K with my 11 HO RAM Dually. The exception was taking off on a grade. I towed in 5th at 60 doing about 1,750rpm. I can tell you from personal experience the 3.42's with AISIN in my son's 3500SRW towing a combined around 28-29K with a very overloaded dump trailer took off without effort on a sizable grades. LOOK at the chart I provided! Those are SAE numbers, third line up shows the 3.42's. Towing at 1,750 at 60 is perfect for the Cummins.
I tow the same rpm now with the 4.10's towing 33-35K.
Honestly to do it over again I may just get the 3.42's next time even at these weights. The savings running solo will add up!
Don't COMPROMISE!!!