Top speed for 2F and 5speed?

RWBeringer4x4

Mechanically Challenged
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Joined
Jul 11, 2012
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The People's Republik of Maryland
Define "comfortable" top speed. Keep in mind the truck is leaf sprung on a 90-inch wheelbase. I have a 350 in mine pushing a reasonable 200ish horsepower. I have had it up to 90mph (on a stock 4 speed H42 transmission) but I wouldn't say it was comfortable, in the sense that I couldn't hear, and the steering was getting pretty floaty and my knuckles were a few shades lighter...

Comfortable to me is under 60mph. I don't worry about the truck mechanically on long interstate drives at 70-75ish but I prefer not to.
 

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