On another forum there has been a debate regarding which is better for performance. Very convincing arguments both ways. I have thought PCV was the thing to do, to eliminate oil vapors on your engine, but the hot air and crankcase fumes is not good for optimum performance and the accumilation of baked oil deposited inside the intake manifold and heads.I am about to choose open breathing, but what to do with the exhausting crankcaser vapor. Any thoughts ?.....................MO -- -- -- Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. -- You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group. http://groups.google.com/group/1962to1965mopars?hl=en.