If you can find one, you could snag the oil filler/breather off a GMC 270 or 302 with factory PCV. The road draft tube is replaced with a tube that has a small paper air filter element for the breather and an oil filler cap. The valve cover doesn't have an oil fill hole. Any oil would have to travel up the long tube and through a couple of baffles to puke out the breather.


Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic.