454cid
Sooper Pooper
Clean up the screw in terminals or replace them. They do not look too good. The metal is soft and they wear easily. Also if there are 2 leads on the positive, make sure you have the correct spacer.
Or eliminate it. My original spacer compressed/deformed over time. I over tightened it, not knowing any better at the time. I used a brass accessory bolt, and attach the second cable on the outside of the hex. I've got one on the negative side now too.