Hello all. I am Installing an offenhauser valve cover to a 250 Chevy. I have read, and have been told, that this valve cover will leak oil because there is no pvc provision. I realise the engine must be able to breath but was wondering what others have done to correct this problem. Not wanting to cut-up, grind, or install baffles into this aluminium cover. I have seen the offenhauser bolt on breather caps, and aftermarket pvc/oil cap but not sure if this combination will be sufficient to allow the engine to breath. Also what is the best gaskets members have used on the V/C and side plates.
