Quote:
Originally Posted by Chance
You may be overthinking this a little bit because it's not as black and white as most try to make it.
My Class C was roughly the same size as yours and came with 4.10:1 gears. I had no problems even when crossing the Rockies, or when doing rolling hills. On hills it would occassionally downshift, but that's normal and should be expected. If you gear down so it downshifts less often, you will then pay a price when it does downshift because it'll go to even higher RPMs which may not be necessary. Basically what you gain in one gear you'll lose on the next until speeds make up the difference in RPMs and then it all repeats. As I stated, it's not black and white.
As an engineer I will say that what is black and white is that total gearing also depends on tire size, so your 4.10:1 may actually be similar or even lower than a new F-450 with 4.30:1 gears because their tires are much larger in diameter.
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I did this in a Tacoma and had great results but many others preceded me. The tire size change in the E450 would be important. I get what you say about shift points but it is not that big of a change.
I am looking to see if anyone else has made this change on a motorhome.
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