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402 PCV System?

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Old Aug 23, 2007 | 08:21 AM
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Default 402 PCV System?

what is the best way to set up your PCV system i have tried a few different ways and they all still use excessive oil and it is the PCV system doing this cause i isolated it and my consumption issues dissapered,but i also know you have to use something.thanks
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Old Aug 23, 2007 | 11:10 AM
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I run a catch can off the valley pan. It's mounted away from the engine in front of the radiator cowl. I run a breather setup off the valve cover.

My catch can collects very little oil. I've got a clear fuel filter in the line going to the manifold after the catch can so I can see exactly what may get through. NONE.



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Old Aug 23, 2007 | 12:24 PM
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Originally Posted by WKMCD
I run a catch can off the valley pan. It's mounted away from the engine in front of the radiator cowl. I run a breather setup off the valve cover.

My catch can collects very little oil. I've got a clear fuel filter in the line going to the manifold after the catch can so I can see exactly what may get through. NONE.




I have the same setup except for the fuel filter!
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Old Aug 23, 2007 | 05:58 PM
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I use the LS6 system with no problems.
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Old Aug 23, 2007 | 06:29 PM
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run breathers and never have a consumption problem. Also will make more power/stop the intake tract from geting coated in sludge as well.
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Old Aug 24, 2007 | 07:59 AM
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i was going to just put breathers in the covers too eliminate the oil in the intake track guess thats what i am doing.thanks time to order those GM valve covers
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Old Aug 24, 2007 | 08:14 AM
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"see5" has a good set up that totally relieved my 402 huffing issue completely. Do a search and you'll find a lengthy post that he had up about this issue. Really good info.
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Old Aug 24, 2007 | 10:07 AM
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Originally Posted by KRAZY K 2000 TA
i was going to just put breathers in the covers too eliminate the oil in the intake track guess thats what i am doing.thanks time to order those GM valve covers
The other thing I did on mine was put in baffled gromets so that the oil does not splash up in the breathers.
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Old Aug 24, 2007 | 12:04 PM
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Originally Posted by ZLEEPER
"see5" has a good set up that totally relieved my 402 huffing issue completely. Do a search and you'll find a lengthy post that he had up about this issue. Really good info.
I did a search and didn't come up with anything...do you happen to have a link?
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Old Aug 24, 2007 | 12:31 PM
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Originally Posted by MeentSS02
I did a search and didn't come up with anything...do you happen to have a link?
https://ls1tech.com/forums/generation-iv-external-engine/691509-breathers-pcv-bypass-etc.html
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Old Aug 24, 2007 | 01:43 PM
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i started this thread because of the problem with the pcv systems and figured it needed to be addresed
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Old Aug 24, 2007 | 02:07 PM
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Originally Posted by KRAZY K 2000 TA
i started this thread because of the problem with the pcv systems and figured it needed to be addresed
I agree with you, I just wanted to pass on the fix that others shared with me. I was having an extreme consumption issue prior to using that set up. Now that the pressure has been equalized, I'm not using hardly any oil at all.

Last edited by ZLEEPER; Aug 24, 2007 at 02:08 PM. Reason: spelling
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Old Aug 24, 2007 | 03:42 PM
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Thanks for the link...great info. I had contemplated doing that myself, but haven't had the time to try it.
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