The wife and I went ATVing in Wisconsin with a couple we know. They have a 2wd 454 dually auto and I had a stock 215hp 5-speed 4x4 . When we stopped for the first break, after coming up a mild grade across the river valley, his wife hopped out of the truck and said," what the hell do you have under the hood of that truck"? I casually responded, " a six cylinder". She said, "we were on the floor trying to keep up with you and you were just pulling away"! Our loads were virtually identical.
The sad part is I didn't know he was struggling behind me or I would have floored it. All this was at about 500 ft above sea level, at higher altitudes there is not a normally aspirated gas pickup that I would not race.
I played with an empty chevy in Idaho and should have paid more attention to cresting the rise instead of how far back he was falling in the rear view mirror. I was carrying a camper on back and pulling a trailer.
Its moments like these that make life worth living!