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I hate to post this but.... PCV question.

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Old 01-24-2012, 09:41 AM
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Default I hate to post this but.... PCV question.

I have the GMHTP valve covers on my car. I dont know what to do about a PCV system. My idea was to run an oil cap with a port on it then run that to a catch can and then to the throttle body. Will this work?

Also, what happened to the good ole days of running a oil cap with a port on it and a hose to the header collector to pull the vapors out of the crank case?
Old 01-24-2012, 10:16 AM
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Just get the ls6 valley cover and call it a day. Easy install
Old 01-24-2012, 10:28 AM
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You'll still get blow-by with an LS6 valley. Only way to stop oil getting into the intake is with a catch can.

Long thread but everything you want to know about catch can/PCV routing is here. https://ls1tech.com/forums/generatio...outing-ok.html There are excellent diagrams in it as well.
Old 01-24-2012, 11:11 AM
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I understand how to route the PCV system and the point of a catch can and its importance but pulling air from the valve cover and pulling air from the lifter valley are the same right?
Old 01-24-2012, 01:50 PM
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Drill and tap a hole in the driver side valve cover and install a 90* barbed fitting. Run a length of oil/fuel line hose from the fitting to your CC, then to the intake. For the fresh air inlet run a PCV breather in place of the oil cap, an run a short length of O/F hose to the TB hose fitting; Your done!

FYI, the only thing the LS6 valley cover did for me was eliminate running a hose from the driver side valve cover, you'll benefit a lot more from a fully functional, quality, properly sized, Catch Can!

Last edited by 99Bluz28; 01-24-2012 at 01:59 PM.
Old 01-24-2012, 03:00 PM
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There are many threads that have good information concerning this issue. Just be sure that you have your "clean" and "dirty" sides routed correctly, and it will solve/prevent most problems.
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Old 01-24-2012, 04:02 PM
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Originally Posted by 99Bluz28
Drill and tap a hole in the driver side valve cover and install a 90* barbed fitting. Run a length of oil/fuel line hose from the fitting to your CC, then to the intake. For the fresh air inlet run a PCV breather in place of the oil cap, an run a short length of O/F hose to the TB hose fitting; Your done!

FYI, the only thing the LS6 valley cover did for me was eliminate running a hose from the driver side valve cover, you'll benefit a lot more from a fully functional, quality, properly sized, Catch Can!
This ^ IS the Correct answer. The LS6 valley cover is a waste of Time and Money. and by the Blow BY is when you system is blocked and fumes are BLOWN out the dip stick and other orifices.
Old 01-25-2012, 11:31 AM
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Ok, so can someone shoot me a link to the catch can I need to run?
Old 01-25-2012, 12:40 PM
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RX Performance or a Saikou Michi
I've got the RX, but the SM seems really nice.

http://www.coloradospeed.com/index.p...ducts_id=13737

Last edited by 99Bluz28; 01-25-2012 at 01:28 PM.




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