How long does it take to seat rings? my all new rebuilt 440 has about an hour run time on it and today I had it out and noticed a bit of smoke on hard acceleration, it seemed to get better the more I ran it, maybe it's even still burning oil out of the new exhaust system.
I don't see any smoke at cruise speed, none at idle, and I shut it off hot and waited a bit to restart it a couple times, no smoke on start up. so I don't think it's valve seals, I've been there before.
The pipes look pretty clean. any suggestions on what this could be ? ring seating is all I can come up with but that's just a wild guess.