That's what's gnawing at me about this. I can’t be sure that its valve train and not something in the bottom end. If it is bottom end, then I’ve got a rebuild coming which will take until next year to get finished and installed. If its just valve train, then I can get it ready and install the engine this winter. To add to my frustration, I hurt my back Friday, so I couldn’t try my pushrod experiment Saturday. I essentially wasted what is probably the last good weekend this year. Oh well, got to keep it in perspective. There are a whole lot of people in this world who have *actual* problems.

Anyway, my plan is to try running it with the pushrods pulled on #6 and see if the noise is still there. Maybe next Friday. I’ll report back for everyone’s info/amusement.

I appreciate all the suggestions and commentary. It gives me the illusion of progress in between times I actually get to work on the engine.

regards,
Leon