I have been in the trucking business since 1963 and I am still confused. GMC called a 350 a 2 ton and a 450 a 3 ton. The trucks I run today have a gross vehicle weight of 52,000 and a gross combination weight of 80,000 and an empty weight of 14,000, but they are registered as 5 ton. When you get into larger trucks. the tonnage is just a nominal rating that means nothing.
