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Old 03-23-2011, 01:15 PM
72LuxuryLeMansLa.'s Avatar
72LuxuryLeMansLa. 72LuxuryLeMansLa. is offline
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Join Date: Nov 2009
Location: Eunice, La.
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Quote:
Originally Posted by Tom Vaught View Post
Just a comment:



The PCV valve system does a FAR BETTER JOB on that task, is cheap, and just requires hooking up one hose to the intake plenum, then to the pcv valve, and finally to one valve cover. As long as the other valve cover has a breather (for fresh air) on it you are good to go.

There is a TON of history on why you do this stuff for reasons other than emissions.

Just my comment on this subject.

Tom Vaught
Tom,

I have a mostly stock (4bbl, HEI, Dual Exhaust were added) 1972 Luxury LeMans with a 350 in it. In the 1972 Service manual it speaks of a "Closed P.C.V." system. The manual says the P.C.V. is located in the "push rod cover" which I assume is the "valley cover" with a rubber hose connecting it to the intake manifold and another hose (a pipe in my case) connects one rocker arm cover to the air cleaner. It makes no mention of the second rocker arm cover. You say the other rocker arm cover should be vented; are there two types, closed and open p.c.v. systems, or am I just missing a breather in my other rocker arm cover?

Thanks,
Karl