Re: I dropped a bolt down the distributor hole
Long story short.
Valve spring shim, wound up in the oil pan, (how did it get out of the cylinder head, through the oil drain hole, shim was 75% whole?)
Found it in the rotors of the oil pump, after the rotors froze up, shearing the distributor gear and knocking off a couple of teeth on the cam gear.
Shim worked it's way through the pump pickup screen, up the pickup tube. I've been told, it was in the pan when the engine was assembled, not so, the engine was assembled by me. The engine used a flat tappet cam, constant valve adjustments even with polylocks, found the valve spring the shim came from on tear down.
So, you can believe posters saying, "You'll PROBABLY be okay."
I've learned, drop the pan, remove the bolt, never worry about it again.