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LS6 PCV with catch can setup

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Old 09-01-2017, 12:37 PM
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Default LS6 PCV with catch can setup



Hey guys, i'm looking for input on how to properly setup the catch can with the LS6 PCV valley cover.

I added the route, LS1 valve covers, LS6 valley cover, LS3 intake, and Holley EFI TB.

Thanks guys!
Old 09-01-2017, 03:27 PM
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That doesn't look right to me. I believe you want the TB line to go to the valve covercover for the fresh air inlet. Then from the valley cover to the catch can (dirty) And out of the CC to the intake. I'm not familiar with the LS3 intake, but I've never seen a T between the valley and valve cover.
Old 09-01-2017, 03:46 PM
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Originally Posted by z-camaro
That doesn't look right to me. I believe you want the TB line to go to the valve covercover for the fresh air inlet. Then from the valley cover to the catch can (dirty) And out of the CC to the intake. I'm not familiar with the LS3 intake, but I've never seen a T between the valley and valve cover.
Yes this is right.

No tee where you have drawn one. That is just allowing dirty air from the valve cover and the valley cover to be pushed by blowby into the catch can with no manifold vacuum source and no fresh air back in. So you will end up getting dirty oily air into the airstream in front of the TB

The left hand side after the TB where you have typed "capped" is where the clean side of the catch can should connect to.
Old 09-01-2017, 03:50 PM
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It should look like this. A simple Google search was all it took.




Also, if it's a manual car and you downshift to overrun the engine down hills n such you may consider putting a 3/8" check valve on the clean side to prevent any oil from making its way into the throttle body.
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Old 09-01-2017, 03:51 PM
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There are plenty of threads on this, including my own a little further down the pages (with pics from other members showing how). Also, a google search of LS1 to LS6 PCV conversion will show you all you need
Old 09-01-2017, 03:52 PM
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Beat me to it BudRacing!



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