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Discussion Starter · #1 ·
So I’ve been wondering if the pcv setup on my 63 impalas 350sb is incorrect. It has factory chrome valve covers that came off a friends ‘73 corvette. I have the oil fill and pcv on the driver side(cover needs to be flipped over)and on the passenger side a chrome closed breather

i was looking at photos of 70s corvettes with 350 that utilized the same covers and on the passenger side they tend to have a breather with an elbow going up to the air cleaner like in the first photo below. Seems like it be a better setup than just the chrome breather cap I have now. The second & third photos are my cars engine.

Any help is appreciated guys.

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Functionally I think you are fine; but different from '63 OEM.

You have an 'open' type system; similar in function to the '63 OEM version.

Later 'closed' versions did not 'vent' to the atmosphere. They vented to the air cleaner (for environmental/emission considerations).

Attached is a screen shot from the '64 shop manual that shows both type systems.

Hope that is helpful.

Pete
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Discussion Starter · #4 ·
I pulled the driver side valve cover and see I have no baffle at all under the Pcv valve. Is one needed under it? I believe there is one under the breather on the passenger side valve cover but haven’t checked that side yet.
 
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