O.E. design of 261 had screw in PCV valve at same location with pipe going over the top of valve cover to intake manifold.
Filtered air enters via stock tube on 261 valve cover with hose to clean side of air filter.
No issues with oil being drawn into intake.
Note: vented cap can be seen in 1st pic (open system), second pic has sealed cap, fresh filter air via tube on valve cover (closed PCV system).
Last edited by BC59; 04/17/2024 10:48 PM.
