My thoughts.

1) The new cam should be installed about 106 intake lobe centerline (110 LSA ground on the cam).

2) The new converter could be effecting the chassis dyno numbers, especially the torque peak.

3) Even if the engine is actually down slightly in peak hp (that is an if), I think the changes will make the car faster on the track. But readjusting the cam would be on my list of things to do.

Since you said the cam was put in "straight up", does that mean you aligned the sprockets dot-to-dot? If so, the ICL might be lower than 110, but without a degree wheel there is no way to know. But I suspect the cam needs to be advanced 3-5 degrees from where it is now.