when I originally built the 350 the bolt would not torque up. It was like threads
were bad. Went ahead with it anyway and put about 10,000 miles on it with no
trouble,, but never did really trust it. Glen you mentioned grinding proper clearances on the 383. I don't recall doing that on the one I did back in the 90's.
I did have a 7 qt oil pan on it though, and never any problems. ThANKS