Re using cast iron rings?

Princess Valiant said
Based on the replies, I'm going to share where I got this idea. I might have got the wrong impression or maybe that is what he meant.

I was personally taught in auto school to replace rings, nobody never even suggested such a thing except this video. my engine hardly has any ridge and ran before taken apart but is an original 74 engine that was taken apart for other issues and is intended to be overhauled stock...

That is the kind of engine I always looked for. But I would torque down a torque plate, and the main caps to spec and, using a good hone (Sunnen in my case) to just almost clean up the "waves" at the top of the cylinder when the piston reverses course. Good file to fit rings and you should be golden. Or do the best you can with a normal hone and get the OEM rings from replicaracer43 see post #17, they are quality rings. As a matter of fact, I picked up an almost new looking 273 short block this summer to do this very thing.