If it was still running and the air cleaner muffled the sound, it is most likely a valve/valve train problem. Pulling the valve cover is the first thing to do. You may have a broken rocker or a dislodged pushrod.

They are a great motor to work on. I really enjoyed rebuilding mine and it now runs just as smooth as can be. I was offered a good running 235 but there is no way that I wanted to give up my 216.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!