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Old 03-30-2020, 08:11 PM   #1
jp2240
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Pcv

So I bought a crate motor ls3. There is a apparently 3 pieces to the pcv system 1 in the valve cover on the front passenger side valve cover which hooks to the fresh air intake. The 2nd is in the front of the intake. This one came already hooked up to the throttle body. The third comes off the rear of the left valve cover. So where do I plumb that or do I just leave it pluged? Thanks for any input.
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Old 03-30-2020, 09:29 PM   #2
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Re: Pcv

if someone doesn't answer ill get you a pic in the morning of where its plumbed to
but the one on the pass side is the fresh air side
heres a old thread on it...my drivers side is capped off from the factory...https://www.67-72chevytrucks.com/vbo...d.php?t=743302
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Last edited by mongocanfly; 03-30-2020 at 09:37 PM.
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Old 03-31-2020, 08:14 AM   #3
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Re: Pcv

Heres the front pass side valve cover...and rear drivers side valve cover
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1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
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2023 Chevy Z71..daily driver
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Old 03-31-2020, 08:33 AM   #4
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Re: Pcv

Best I can determine from the net is there is no pcv valve on a LS3....just a orfice... and I think this is it...loops from valley cover up to Intake...
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1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
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Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
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Old 03-31-2020, 12:59 PM   #5
jp2240
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Re: Pcv

Yep you're right that answered my question looks like the rear one stays pluged. Thank you.
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