7% Grade
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...
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3000rpm @ 40mph is 2nd gear. I am not familiar enough with the 5.9L and your trans gearing, but you might be able to run first gear at higher engine speed at 40mph. This is a primary problem of 4-spd trans, the relatively wide gear spacing.
If you want to go faster uphill, I recommend towing in 3rd gear, let the speed drop to about 55mph in 3rd gear and force a downshift to 2nd. Engine will be closer to 4000rpm, but that's where it's power is and you'll be less likely drop down to 40mph.
If you want to go faster uphill, I recommend towing in 3rd gear, let the speed drop to about 55mph in 3rd gear and force a downshift to 2nd. Engine will be closer to 4000rpm, but that's where it's power is and you'll be less likely drop down to 40mph.
