Finally got my 73' 240z started a couple of days ago and I have some problems. I have a significant amount of smoke streaming out of my valve breather and my pcv. My engine idles fine and runs strong, other than this smoke. Over the last couple months have rebuilt my triple webers, installed a new header, gone through the whole fuel system ,etc..the car also has a different cam, What's going on? Is this normal? The cam also seems a little loud. Does any body have any ideas before I decide to rip the head off. I will also note the car has sat for approx. 3yrs prior to this.