big power setups sometimes run a vacuum pump on the motor to help seal the rings and etc

for stock setups with boost venting both valve covers and the valley cover to a catch can is all ya need. Ive done every build ive done like this since 2008

thats alot of boosted combos, sucking oil back into motor is never a good thing and can lead to detonation in some cases

 

I still haven't made a decision on this yet. I was dead set on just running the two valve covers to a can. I don't have any ports on my gen 3 valley. I wonder if the 2 #8 ports would do it?

I think I want the simplest I can make it. I can always change it later. As long as the pressure always has some where to go.

 

LS6 valley cover has the port

 

Thanks George. I am going to just vent the valve covers to the catch can and see how that works for me. I can always change it if I don't like the results.

 

I just put in a monster rx catch can but I am going to change to venting both valve covers to it ....
1 hose goes to throttle body...has a one way valve...
1 goes to supercharger boot input side, has a one way valve...
1 goes to valve cover with other cover with a breather..

 

If you run both your valve covers to the can, how are you going to run your third line?

 

I will tee in the valve covers to the middle line...fittings on order will post pics