Pcv? Vc Breather? Neither?

[FordRacing302]

So I'm installing my Trick Flow heads and cam and notice that my already existing TFS lower intake has a plug where the PCV should be (I've been driving the car like this for 3 years). Right now the oil filler neck nipple is the only form of ventilation that this motor has. Can I simply run a valve cover breather or do I need to install a pcv valve. Or is the oil filler neck nipple sufficient?

 

[Noobz347]

I am not a fan of breathers on cars where inducted air is metered.

I would run valve cover ports to an inlet vacuum source through an oil separator and in-line check valve.

 

[89oem]

its all metered air after MAF .. here is a link to an article TomR over on the corral... this is on his SC motor but concept applies

http://www.w8ji.com/pcv_system.htm

 

[Noobz347]

A big piece of what cuts down on picking up oil is the velocity of air that enters the line.

Larger ports/ lines and a larger number of ports that are ventilating crank case gasses, significantly reduces the amount of atomized oil that you pick up.