Lifter noise

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This just started. I’m thinking it’s a collapse lifter.
Where in PA are you located. I might be able to drop by on a road trip a little later this year and do an acoustical analysis if you have not by then resolved or identified the issue.
Time to pull the valve covers and check the valve train. Check for loose rockers, bent pushrods, and that each of the cam lobes is actuating the valves.
Haven't had time to pull the valve covers working on the front suspension. Up on jack stands makes it tuff to get there.