How many times can rod and main bolts be torqued?

Exactly. Much like I described the action of the rod bolts stretching with every RPM cycle. It does not matter whose rod bolt you use. They all have a shelf life.

What gets me is, how many people do an old dirt road build and actually get by re-using rod bolts with 100K plus miles on them. I would do that and sling a rod into next week.

This is the story of my life! :)