Flow Below Added

DD15 / 505HP / 10 SPD EATON

It's just under or right at 1300

Blackie II was 455HP with 3.58 / 10SPD and much friendlier. Didn't have the big aero fins or skirts though.

Casper was 7.2 lifetime ( 300K miles my driving) @ 62mph / 1400 rpm / 3.55 / 10 spd also with smaller fins and skirts with the ISX 15 / 450HP

 

Before ELD, LOL, i had a few that would run slower and average in the high 8's. Right weather, traffic conditions and they would get in the 9's
Work 5, off 2, none are going to cut into the time off so it's the speed limit everywhere.

 

Same. I never really saw bad weather, cause I just stayed ahead of it. 58 mph cruiser all day, and night lol.

 

All my trucks had APU's as well, fully functional, so there was nil idle time as well.

 

They're all on dedicated runs so what the weather is you have to live with it.
Best new ones i had were the 96-99 Century with Detroit/13spd Always in the 7's. Changing over from 379 Pete's that were always in the 5's-low 6's (except downhill with the key off)

 

The original Blackie was a white 670 D13 / 10SPD / 3.58 I could only get 6.7 to 6.8 out of him.

 

Over drive with those rears