440 brake in process/ engine breathing

Okay thank you everyone I’ll pickup a 14x5 filter before break in and I’ll double check my timing. I also appreciate the info on the oil and zinc additives I had no idea they wouldn’t mix I’ll be sure to get a good break in oil and I’ll definitely hunt down that Rick ehrenburg article. I got a 650cfm demon but I have no way of tuning it, no one in the local area I know has an engine I can tune it on so I’m kinda sol there. As far as peak break in RPM what range should I vary between.