[Copperhead]

Might want to keep in manual mode more frequently to control the shift points to better match performance to what you are doing. That would be a big help in many situations. You will notice a difference, for sure, compared to your previous ride, but like most things, once you learn where the motor likes to operate and how to manage power to what you are doing, it may not be that bad of an issue. I personally do not like taller rear ratios for many applications combined with one size fits all motor and transmission combinations. I use very tall ratios (2.64 - 2.79) in my commercial trucks (and I have transmissions with 18 gears that I can make it all work well), but like lower ratios (3.73 - 4.10) for my pickups. But, one can overcome limitations with a little trial and error, using the manual mode more frequently and taking more control over from the TCM. Of course, if you can't seem to grow happy with the setup, you could always do a gear change. try the other stuff first to save some money.

 

[Copperhead]

Well, most of the newer commercial semi engine are governed to run not more than 2100-2200 RPM. most of them do their work at 1300-1500 RPM. 3.55 is a common ratio with overdrive transmissions. Many direct drive trans in use now with 2.64 as a typical ratio. My 18 speed is a double OD, but I run it primarily in 16th direct at road speed. The key, is being able to split the bottom range gears and keep the RPM's in a 200-250 RPM operating range of each other. We don't quite have that luxury with our pickups, and the RPM spreads are a lot bigger with tall ratios, even with the 8 speed. all of that nonsense being said, I have found 4.10 to be the ideal ratio for most everything I have done with a pickup for decades. I invented new swear words on the 3.42 in a 1500. One of the reasons I am back in a 2500 with 4.10 again.