Hope the hammering didn't flatten a cam lobe.I figured out I have a collapsed lifter in my Denali……so that sucks. Gotta pull the engine and get the the heart of the issue, also have a little rear main seal leak or I would fix it with it still installed. Going to do the afm delete and freshen up everything except the rotating assembly ( I hope) but if I have to I’ll do that too. It’s at least a couple of g’s in parts alone .