SBE 318 basic rebuild +CAM , INTAKE, HEADS, expectations?

since someone mentioned Whiplash cams.. i am curious if anyone has ever seen one on a dyno or at the track? I have seen a lot of videos about how amazing they sound but not how they run..
THey sound awesome idling through the parking lot at a car show but you get them over 2000 rpm and they sound like Grandma's teen in her Plymouth.