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ls6 valley cover/ pcv valve?

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Old Jan 14, 2014 | 06:00 PM
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Default ls6 valley cover/ pcv valve?

how do I know if my ls6 valley cover has a built in pcv valve? I did the ls6 valley cover swap and don't know what yr it is or what car it came from. need help.
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Old Jan 15, 2014 | 07:42 AM
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A quick search and I found this. The first page of this thread should answer your question...specifically post 15 and 19.

https://ls1tech.com/forums/generatio...ley-cover.html
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Old Jan 16, 2014 | 02:46 PM
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I see but is there anyway to tell if the pcv is built in or do I need to put one inline. from what I found by searching is that the newer ls6 valley cover has the pcv built in and the older ones do not. Do u know when the yr change was and how to tell if mine is newer or older? I'm trying to contact the guy I bought it from to see what yr and car it's from
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Old Jan 16, 2014 | 03:40 PM
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2004 is when the PCV valve went internal; 01-03 will still be external.
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Old Jan 16, 2014 | 03:43 PM
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i dont think you will be able to tell unless you pull the intake and look at the part number
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Old Jan 16, 2014 | 04:18 PM
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I've got the new style on mine.. just need the cover itself and the little $7 hose and thats it..

I plan on adding a Norris catch can soon as well
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Old Jan 16, 2014 | 06:02 PM
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Ok I talked to the guy that I bought it from after digging thru paypal and he said it was from a 04 gto. So it should have the pcv internally.

Next question just to be sure could I blow in the hose to the valley cover? It shouldn't let air back in right?
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