My 5.4L Triton V8 is pretty stout. I had the same motor in my F150 a few years back and pulled some pretty hefty crap with it...pulled a car on a car hauler through the mountains of West Virginia once and it never gave me any trouble.
My uncle has a 1977 F100 4X4 that is BAD TO THE BONE. It is his pride and joy. He could have bought a newer one whenever he wanted it, but chooses to keep repairing and running this one...he did have to put a new motor in it a few years back...but this thing is a sight to behold.
