I have a 1970 442 with a 455 and stock aluminum manifold. Since I owned this car there has been oil seepage out of the PCV valve to manifold connection. I had the manifold off and saw there was no baffle under the port so I added one. Still leaks. I have the dual breather and changed to different rate PCV's. Any ideas how to stop this?
Thanks and Happy Holidays.
Joe

 

Are you certain it is oil ? I dont see any by the fitting or the pcv valve itself unless you cleaned it up. If you pull the hose off the PCV valve is there oil in it ? There really should not be.

 

Yes, it is definitely coming from there. I just took this photo yesterday, car has been sitting for over three months. It was worse before I put the clamps on it.

 

So is there oil in the hose going to the pcv valve ?

 

So you added the factory style turkey tray intake gasket, or something else? If you are not using the factory style turkey tray it will suck oil into the PCV valve.