Originally Posted by troverman

2013xlt, come on. There is a reason the torque output of the Cummins is reduced on the 68RFE transmission...and there is a reason the Aisin costs a considerable penny more. The 68RFE may be completely fine for the 800lb-ft it is rated for, but its not in the same league as the Aisin or the 6R140. In fact, the 6R140 is used all the way up through the F-750 trucks, such is the confidence level. On a whole, that transmission has proven to be extremely reliable and robust.

Virtually every modern automatic transmission reduces torque for a split second during a shift to smooth it out. I think you'll find the 68RFE does the same. Transmissions have been doing this since the mid 1990's.

I would challenge any RAM you like to a passing speed race from 50-70 or what have you. The RAM, whether equipped with the G56, the 68RFE, or the Aisin is *always* the slowest truck on the road. The inline-6 may be able to develop torque, but it doesn't do nearly as well in the horsepower department as the V8 diesels.

Whether or not the 68RFE is quicker than an Aisin I have no idea - but if we are racing SRW trucks my money would be on the 3500 Aisin truck - a few more horsepower, and 100lb-ft more.

The exhaust brakes on the 2011-2014 Powerstrokes were admittedly pretty much non-existant. However, the 2015-16 Fords have a quite decent brake, and the 2017 trucks have a new even better two-mode brake. I'd pit the 2017 Ford brake against the RAM brake and expect quite competitive results.

Originally Posted by oklarado

Yeah I agree, I think he is a cummins troll. I have owned quite a few cummins, and they are not hot rods.

Originally Posted by bronc71

the trans would go out had to replace every one other then our 08

Originally Posted by REPO.

That's bad luck right there! I am on my second dually, and we have/had 14 others here at work (crew cab duallies with service bodies) we have not had any issues ever with the auto trans. Ball joints & u-joints are very common though.
Overall, it was the reliability here at work that convinced me to buy my personal trucks from dodge.

Too bad they can't make some changes or something. They still look exactly the same as the 2010's. It's getting boring. 😐

Originally Posted by 2013xlt

I've had minimal driving experience with the lml duramax and none with the l5p but have had extensive seat time in a 2014 Ram Cummins cclb srw 3.42's and a 2016 F350 cclb 6.7 srw with 3.55's. Highway power is not even a question, unloaded or loaded it has hands down better throttle response and is quicker then the 6.7 powerstroke. Like I said, off the line the Ford is faster, but pulling out to pass there's no question, sorry but that's the truth from my many experiences with it. The 68rfe with a valvebody upgrade and trans tune can hold 75hp over stock with any load behind it for basically forever as long as you're not doing boosted launches with it. The 6r140 I would agree is stouter overall but my best friend toasted his C3 clutch pack with a 30hp economy tune from h&s on his 2012 f350. Some of our company trucks have also had solenoid failures as well as a turbo failure and a couple cp4 failures and fords warranty is not as good as fca's in my opinion. Go test drive an aisin and a 68rfe back to back if you don't beleive me. Once the aisin is at 10 mph the torque management is less than the 68rfe but before that it is definitely more torque managed and that is from a reputable engineer who helped design the 68rfe. The aisin as69rc de fuels between shifts and the 68rfe does not. The 0-60 time is quite a bit faster with the 68rfe equipped trucks. The Cummins exhaust brake is night and day better (not even close with 15,000lbs behind the truck) and the Cummins sees about 3-4 mpg's better than the powerstroke. The 12,300lbs gvwr is also a big plus over the fords 11,500lbs gvwr. Beleive what you want but this is our companies experience with these trucks.