Lifetime Supporting Member
Join Date: May 2002
Location: Gypsum, Co
I wouldn't worry about the RPM's at all. As I mentioned there is a govenor in the PCM that is set at a certain RPM, I think it is 3500 RPM's but I am not sure and you can run it at that point all day long.
As for regearing you have a 4x4 so you would also have to do the front end.
96 F250 PS XLT 4X4 long box, 5sp,4.10, manual hubs,pyro+boost guages, Dark Toumaline, add a leaf, Dale's TYMAR, and HX hose, downpipe, coolant filter, Luk clutch