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Before going with a LS6 valley cover try going with a fixed orifice style pcv valve first, that's what the 2004 on up LS6 valley cover has, along with everything gm 2004 on up has (fixed orifice valve).
Can you elaborate a little more on the fixed orifice style PCV please
see how clean it is around the top of the engine without all that bullshit in the way?
It does clean it up quite a bit. That's most of the appeal at this point... Plus I'm in there already, so if it doesn't do the trick, I can always go with a catch can easier down the road.
Well... I ordered an lS6 valley cover tonight. I figured it's best to do this now while I have access. If I'm still not happy, I can easily install a nice catch can.
Well... I ordered an lS6 valley cover tonight. I figured it's best to do this now while I have access. If I'm still not happy, I can easily install a nice catch can.
What part# did you order there where 2 different versions ? You want the one for a 05 CTS-V
Ok that's the good ...... second design. Be sure to check it if you by local . When I ordered mine from the dealer they ordered the correct part , but when I opened the box it had just the standard valley cover in it . The dealer made it right and reordered it for me.
Ok that's the good ...... second design. Be sure to check it if you by local . When I ordered mine from the dealer they ordered the correct part , but when I opened the box it had just the standard valley cover in it . The dealer made it right and reordered it for me.
Nope. Seems that's the number cast right onto the part!
Nope. Seems that's the number cast right onto the part!
Yeap the part # is cast into the bottom . But check it before you leave , mine was in a sealed GM with the correct part # 12577927 , but when I opened the box I found a standard valley cover ! It was not an LS6 at all.
When I got my truck, I installed the LS6 PCV system-and a catch can. My motor had a long ago failed LS1 PCV system. Even with the LS6 system, I still catch a few ounces of oil every month. But my intake is bone dry.
Paul, mine looked that bad as well when I took my intake off for the first time. I've pulled it a couple of times since to inspect, and that LS6 PCV really helps. I still get very minor amounts of oil, and I need to install a catch can, but I've got other issues first.
Bottom line, yes, the LS6 valley cover is worth it IMO
BTW folks, the four corner LS1 cooling tube fits under the LS6 intake if the ribs on the underside of the manifold are shaved. Four corner cooling is better.
I want to make sure I've got this correct...the second design LS6 valley cover (P/N 12577927) has the PCV valve installed under it? So then I will just use a plain ol' hose to connect to the intake manifold, correct?
I want to make sure I've got this correct...the second design LS6 valley cover (P/N 12577927) has the PCV valve installed under it? So then I will just use a plain ol' hose to connect to the intake manifold, correct?
That's the one. The hose is available too for about $4
Wound up going with the Super Vic and 4150 throttle body. Just completed the install at lunch today - and added an LS6 valley for good measure. I will find out how it runs tomorrow.
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