Engine Oil 360 LA?

I asked Brian at IMM Engines what oil should I run in the engine he built for me. He said run 10w/30 oil that is high zinc. Joe Gibbs, Valvoline Racing oil, etc.. Now keep in mind this is a roller cam engine.
Don't ask me why because I don't know the answer. I just do what the man said. LOL
I run the engine some what hard so it gets fresh Joe Gibbs Driven 10w/30 oil every 3000 miles.
If anyone wants to donate me some money for my oil changes I would greatly appreciate it. :(