66' 273 Knocking/Ticking

Did this "mechanic" pull the valve covers off? I've owned several 273s, I have never seen the rocker arms go bad even with high miles... Sounds like you just need a valve adjustment to me (which is typical after a rebuild has been run in...) Check 'em after you get your book, and like chryslerfat said they are easy to work on... good luck with it and welcome to FABO