1965 Dodge Dart Charger
No. One nut only -- the kind you show in your photo -- threaded onto a black Stanadyne-made PCV valve such as you show in your photo. Usually when it looks like you're seeing a curved-pipe PCV valve with "another nut" on it, you're actually seeing the late '63/probably-also-early-'64 version of the 2-piece valve, which used a curved-pipe elbow with a relatively large hex section at its base—an AC CV688. Threaded into this from the bottom of the metal cup was a unitised PCV valve which could not be disassembled like the '61-'62 valves.
No. One nut only -- the kind you show in your photo -- threaded onto a black Stanadyne-made PCV valve such as you show in your photo. Usually when it looks like you're seeing a curved-pipe PCV valve with "another nut" on it, you're actually seeing the late '63/probably-also-early-'64 version of the 2-piece valve, which used a curved-pipe elbow with a relatively large hex section at its base—an AC CV688. Threaded into this from the bottom of the metal cup was a unitised PCV valve which could not be disassembled like the '61-'62 valves.
