F450 maximum speed ???
Senior User
Joined: Jan 2006
Posts: 178
Likes: 1
From: Pompano Beach, Fl
Originally Posted by kimminau2
+/-2900 rpm at 80mph. Really bad mpg in that range. Need to keep the rpm's around 2000 for the best mpg unfortunately that is 60 mph or so. That is why I am going to go with 245 or 265 whatever will fit in the wheel wells. Should make it more like 4.30's or 4.10's have not figured out which one yet. It has plenty of power so I am not worried about the taller tires.
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