1968 Buick LeLabre: Engine Makes Rattling Sound Under Acceleration HELP PLEASE!!?

yes well grandpa wins you dont know crap kid, I suggest you go buy some chevron super unleaded, and stop buying cheap crappy gas. Also get the timing fixed those are the two main things for that rattle which is called pinging, its from crappy gas and bad or in need of a tune up. Kiss grandpa butt he may fisx it for you, but I doubt it, you think you know it all LOL .