This question is for those that have a Ford V10 in a class A. I have a 2007 Allergo 32BA with the Ford V10 that only has 36,000 miles on it & I took it to mountains of Western NC this week, and it see...
This is typical for 415 CIs pulling 20K pounds +. I would not go above 4,500 RPM. Some say the V10 is a high revving engine, but the computer limits the rpm to about 5,200. Try anticipating rises in elevation, and applying power in advance. If speed sags, us a lower gear. If you get to the top of the grade, you have it half made.