... I'm sure concessions were made on a one size fits all cam and valve train. As long as I'm building on I'd want to maximize the truck side...
Beater, as you know Ford sixes are my forte, but I can say for the 7 million 300s built the same cam specs were used for all applications, including industrial. The advance/retard was the only thing that changed slightly over the years. Wouldn't surprise me if GM did the same.
I would say for your needs a cam with the same specs as factory but with an additional .050" lift or so will work well. Mild port work will help too.
