[67malibu]

I have an '88 K1500 with a 350. It's a stepside so the fiberglass makes it presumeably a little lighter but it is stock except for engine mods which wouldn't really affect the weight much. I once worked at a machining plant and put it on the scales for the metal scrap trucks (it was calibrated to within 20 lbs.) With a half tank of gas it came in at 4430 lbs. When I tried to rent a car carrier trailer once the place told me my truck was too light for the classification because they said their computer put the listed curb weight for my truck at 4300 lbs.