In July i went up the Green River Gorge on I-26 in North Carolina it's a 7% Grade. Coming from South Carolina. I was doing 3000 RPM at 40 MPH in the right side truck lane. My truck is a 2002 Dodge Ram...
I pull the same grade 3 or 4 times a year in my 04 f-150 with the 5.4 and 3.73 gears.My rpm' s are around 3800 at sixty mph.The truck loves pulling in this range, and sounds good doing it.I have passed many diesel trucks pulling this and the saluda grade. I wave as I go by.And smile a little.