Rpm range?

[Brock]

Cruising speed is one thing. I recently asked rawze on here what rpm he runs and he said he cruises around that mark that your talking about flonly but pulling hills is another story.... anyone who tells you to lug a isx to 1200 is a complete moron plain and simple, they do not handle it down low. They have the torque to do it but they don't design them to run that way and you'll have bottom end issues.

I don't care what weight I haul, when I climb a hill I will shift when it drops below 1300 on a quick drop, if it's a steady long grade I won't go below 1400.... I haul heavier so with my 140k loads, I always keep it above 1500 all the time but if your hauling normal otr weight then that would probably be just a waste of fuel for you.