A new cam has to be broke in. He will need to run a good oil.
The mechanic should have some large fans to place in front of the car, and will run it at 2500 rpms for 20-25 minutes.
Then drain the oil and check for copper or metal filings. He should also pull the filter and cut it open and check for metal as well. If all looks good then the cam is good to go.

I would look at Crane, Crowe, Isky, or Lunati VooDoo cams.

All of this is null and void if you are running a Hyd roller cam