Add some GM EOS to the
oil for the break-in. Short of Rotella and a few other oils, there's no
zinc additives in today's oils. You can thank the EPA for that... This is a requirement for all hydraulic and solid flat tappit cams. Even the pros wipe cams without it..
On another note.. If the engine's been run for an extended period of time the rings may be gummed solid in their lands. You then you might be headed for a tear down and a re-ring job. If you do that make sure you run a "dingle-ball" hone down the cylinders to get some cross hatch. This will aid in the new rings' break-in and seating.
...hope things go well for ya..