Duncan_GT

Hey all

I got new aluminum valve covers last week, and both covers have the hole intended for the breather/PCV system (I think thats what it is). Now, when I look at the stock motor in the car, there isn't a hole on the passenger valve cover. The new covers do have baffles that I will be installing.

I know the driver side is the oil filler neck (correct?). Should I install a breather on the passenger side? How do I plug up that hole? I wasn't intending on running a PCV system, is it needed?

Thanks in advance for the help.

mattdel

Breather if you truly intend on removing PCV. Need some sort of vent to prevent gaskets and seals sucking in on themselves.

Duncan_GT

Yeah I figured it out right after I posted that. Should I run a PCV system? What are its benefits?

mattdel

Over a breather, not much. PCV is designed to create a vacuum, allowing essentially guaranteed air movement in the block.

Breather does the same thing, only without the vacuum. Free flowing. Easier to clog if your valvetrain throws alot of oil, though. Can also prove to be a bit restrictive in engines with bigger strokes.

Duncan_GT

So mine is stroked to 393 lol. Would you recommend running the PCV then?