Gotta be honest. 73 or so is the sweet spot for the Excursion. It puts the revs right about 2100, keeps the boost up and the EGT's low. If I tow at 65, I am forever hunting in and out of 4th gear. Of course, that's only on the wide-open superslab, daylight in good weather and light traffic.
Unloaded, I cruise 80-85. My work car is a 1997 Olds 88. I passed the boss one day going in the upper 80's and the next day he asked me if I was in a big hurry. I told him that I was running my usual speed. He asked how I can do that, and I said "it's easy... just press the long, skinny pedal down farther" LOL. I told him I can get away with it because I don't swerve in and out of lanes and I drive a vehicle that is invisible to the Police. If I drove a Fly-yellow Corvette the same way I drive my Olds, I would be arrested about 3 times a week.
FROG Member MO-0008-571 Since 2012
2016 Rockwood Signature Ultralite 8329ss (coming soon)
Nights camped 2016 -9
Nights Reserved 077121212125 ..........
My Project Blog: http://cowracer.blogspot.com/