Originally Posted by worksti
Larger Cams can act as an obstruction on turbo motors and generally aren't advised. Pistons and Heads are JE.
That is absolutely un true.
They may alter the spool characteristics to a particular set up depending on overlap and duration, or may not yield full gains higher in the rev band because the turbo is too small, but they are absolutely not an obstruction.
I would argue that next to selecting the appropriate turbo charger for one's goals, cams are a close second.