That in no way sounds like a cam'd car. That sound reminds me of a beat up Honda that has a vacuum leak and surges at idle.
However, it sounded pretty good until the faux cam kicked in.
99 Chevrolet Camaro Z28 M6 - 6.676 @ 103 in 1/8, 10.512 @ 130.2 on street tires, H/C/I
93 Eagle Talon TSI AWD 5spd - Built 6 Bolt, 16G Evo3, HKS 272 Cams - under construction