Ford V10 with 4 speed or 5 speed transmission

Gjac wrote:
The greater advantage to buying a MH 2006 or newer chassis is the increase of HP and 3 valve engine (362 HP).

Are you sure of this? I don't think my 08' had a 3 valve engine in my class C. I have it now in my 2019 class A. Noticeable difference, especially mated to a 6 spd. tranny.

The greater advantage to buying a MH 2006 or newer chassis is the increase of HP and 3 valve engine (362 HP).

Where you will notice the difference is in the gear spacing from a standing start. He 4 speed has a very wide spread. Meaning the rpm drop from first to second is ridiculous! It was very noticeable in my 02 V-10 Excursion. However a swap from 3.73 to 4.30 gears took care of that and made OD useable on the highway. The 5 speed got rid of that rpm drop. I have the 5 speed in our new to is 2012 V-10 class A. It is a much better setup for the V-10.

Hardly any difference, and no mileage advantage.

The top two gear ratios are the same between the two transmissions, I believe, so there's not a whole lot of difference on the highway where it generally is in one of those two gears (and the gap between them is plenty large). That being said, the controller for the five speed is rather more sophisticated and it has tow/haul mode rather than a simple overdrive off, and tow/haul is a definite plus for a motorhome.

Both are pretty reliable transmissions if given appropriate care and feeding. The five speed might be a little bit sturdier overall, possibly.

Night and day from my two previous Tahoe four speeds to the 2015 six.