Does having valve cover that just have the cap on one side bad for crankcase ventilation/pressure? Also what do you do with the PCV lines from the driver side valve cover and the top of the pass side cover?

 

I guess what I am trying to ask is... Can you run valve covers with just one breather hole on one side? If so is a catch can needed?? Or can the PCV system be deleted??

Any help would be appreciated!!!

 

Yes you can run just one hose off one valve cover and be fine up to I think 450-500 HP, after that you want to run one off each valve cover or the valley pan cover.

A catch can is always a great idea...keeps oil mist off the track and out of your intake.

 

thanks man, do they have to circulate back into the intake or can you run a breather filter on them?

 

Search catch can routing in the external section. Tons of info there.