vk3cz,
I am no expert on the metallurgy of vehicle frames but I do know that they were designed with a very large margin of strength. I am familiar with some disasters when well meaning people begin welding on the frames only to find that you have de-engineered (is that a word?) the assembly so that cracking and separation are inevitable. The frames are an alloy that is tempered so that it is somewhat flexible but retains strength. The heat from welding destroys the temper, often making it very brittle.
Unless there is serious corrosion, I suspect your frame(s) will function just fine, unless you seriously overload it. You might take some pictures with thickness and gauge indicated so that this audience can compare with our Chevrolet trucks and give you an opinion.
Thank you for the historic pictures, they are great!
Kent
Last edited by Lightholder's Dad; 03/28/2025 3:07 PM.