A boat that heavy needs a Diesel pusher, 350hp minimum, more like 400hp, especially through the mountains. No Motorhome with a V10 will last long pulling that load. Most 35 ft motorhomes with V10's are only rated at 5000 lbs pulling weight. Last few I had were 40ft deisels,and even those were only rated at 10000 lbs towing. Present one is a 2001, 2V V10, 35 ft rated at 275 hp. Needed to chip it with 5 Star Tune kit, make trac bars front and rear, change the mounting positions of the sway bars. gave me 10 mpg to BC and back,pulling nothing, same as the 40 ft with 8.3 cummins deisels. Definately would not pull anything heavier than 5000 lbs with it through BC. Newer V10's have 3valves, tow mode for trans, and 365 hp. I went with the gas one now because it handles better, less cost to maintain than a deisel, and I don't pull anything.
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