Yikes!

[Explosia]

I have to chime I here, because I bought one of these long legged company trucks. I have a 2.64 rear with a 10 spd.

In 9th gear I can run 63 @ 1400. In 10th I can run 73 @ 1300. I get worse fuel mileage @ 63 then @ 73 when I’m light. When I run California I am in the 6’s, when I run 73 I’m around 7.5.

It is opposite when I’m heavy, if I run 73 It falls to the 6’s, and I get back in the 7’s going slower.

Last week I just ran Indiana to Vegas with 15000 lbs across 70 over the Rockies and Utah to 15 and @ 73 and averaged 7.9

In both situations I watch my boost, but this is a weird truck, it does not like to run @14-1500 rpm. I don’t lug it under 1300 but as for fuel mileage it likes to cruise at that rpm.