Valve Cover Gaskets for Fabbed Aluminum

badsport said
This made me look for ventilation, do you have and crankcase ventilation? I don't see a PCV or a breather cap.

Just a thought.

Yeah, I though of that too, but that chrome circle on the pass side is a breather, so It does have one. It could be leaking at lower rpm's, its just not as noticeable, maybe a PCV is the way to go