Hi Scotty. The 352 in my 1965 Ford pickup has started making a clacking noise. I am hoping you can tell me if I should quit driving it for now or not. I included the youtube link. Thank you.
https://www.youtube.com/watch?v=fOQNu9Negzc
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All kinds of noises there prayed most of his exhaust leak noise on the manifold but if it's not that the engine has internal problems you're going to have to pull the valve covers often pray that it's something like a broken valve retainers or push rods
Sounds like a rocker arm, the closer you get to the driver valve cover the more pronounced it gets.
Try popping the covers & checking with a feeler gauge. There is a procedure you have to follow as you go from cylinder to cylinder so make sure you check your haynes manual before doing it.
Turns out there were two sounds going on, the loud ticking believe it or not is my new Carter fuel pump. The sound I was worried about was the right side exhaust manifold gasket, it blew out near the firewall.