Positive crankcase ventilation
70dart340 breaking radio silence. "clementine " is a hell of a nice guy. I donated him a set of 915 "J" heads after seeing the progress on his 383 "Cuda." He's a hell of a nice normal guy, which makes him an endangered species in western, left leaning, Washington. I'm taking my bride of 35 years back to northern Florida next summer. I'll have more parts for him before we head back to Gator country. I don't go into Seattle or King county Unless I'm legally using my CPL. YMMV.