However, a general range would be from approximately 2,800 to 4,500 pounds (1270 to 2040 kg). A light-duty C10 with a shorter wheelbase and smaller engine would be on the lower end, while a heavier-duty C30 with a longer wheelbase, larger engine, and added features would be on the higher end. To find the exact weight of a specific 1981 Chevy pickup, you would need to consult its original owner's manual or a vehicle specifications guide for that year and model.