Grinding, " diesel " noise under valve covers

MOPAROFFICIAL said

Maybe we'll never know

See if it goes away with some more throttle.

jk

I'd like to know myself...

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I've ran her several times hard, since I've noticed it...always figured it was rockers rubbing. And they are! Lol when you give her throttle, it don't seem to get noticeably louder or worse.