386 Stupid Clutch Design

[mndriver]

A Cummins ISX, before DPF, the ones we had were kind of like a 2 cycle dirt bike with that high RPM power band. As soon as they hit 1600 RPM they'd really start pulling.

That entire era of engines were that way.

early 2000’s saw the advent of down speeding for improved economy.

my 2016 will cruise 66 mph at 1150 rpm and 55 mph at 950 rpm.