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LS1 to LS6 PCV Conversion...........Need parts

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Old Jul 12, 2008 | 05:26 PM
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Default LS1 to LS6 PCV Conversion...........Need parts

im considering doing the LS1 to LS6 PCV valley cover pcv conversion, has anyone out there thats done this conversion noticed any difference in the amt. of oil being sucked back into the intake?

....and where can I get these parts without going to the dealership?
#12568002
#12568011
is this all i need besides the 10" of hose ( I can get at the local parts store)

who's got them and how much?

thanks
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Old Jul 12, 2008 | 06:03 PM
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Thunder Racing has the parts as a kit.
Thunder Racing
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Old Jul 12, 2008 | 06:27 PM
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Originally Posted by gfunk
im considering doing the LS1 to LS6 PCV valley cover pcv conversion, has anyone out there thats done this conversion noticed any difference in the amt. of oil being sucked back into the intake?

....and where can I get these parts without going to the dealership?
#12568002
#12568011
is this all i need besides the 10" of hose ( I can get at the local parts store)

who's got them and how much?

thanks

Get them from Gene Culley: http://www.gmpartshouse.com/
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Old Jul 12, 2008 | 07:13 PM
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I was able to click on the thunder racing link without any problems,



then I went to gmpartshouse and spent 15 min. trying to find the parts, but nothing came up

can i use the bolts I have on my LS1 now or do I need these new bolts?
thanks

Last edited by gfunk; Jul 12, 2008 at 07:16 PM.
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Old Jul 12, 2008 | 08:27 PM
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Personally, I wouldn't bother with this conversion on an LS1 without the LS6 block because you need to hack that section out to allow clearance for the LS6 PCV valley cover assembly. I did this mod on my '02 and honestly didn't notice much - if any - reduction of oil in the intake. The catch can I installed was far more effective.

You've probably already seen this.

http://ls1howto.com/index.php?article=18

Here are a few shots of my conversion.

My intake after only 2900 miles on the odo.


The LS6 cover




My valley with the cover off


For comparison, an LS1 valley with the protrusion that needs to be cut down.


The tubing section I eliminated minus the PCV valve at the top.


The catch can I'm using.


About 1000 miles worth of oil that collects in the catch can.
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Old Jul 12, 2008 | 09:59 PM
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Old Jul 13, 2008 | 07:42 AM
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Originally Posted by gfunk
I was able to click on the thunder racing link without any problems,



then I went to gmpartshouse and spent 15 min. trying to find the parts, but nothing came up

can i use the bolts I have on my LS1 now or do I need these new bolts?
thanks
Place the part numbers here, and make sure to select Chevrolet.

http://www.trademotion.com/partlocat...&siteid=214638

Last edited by SilentFright; Jul 13, 2008 at 10:06 AM.
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Old Jul 13, 2008 | 08:28 AM
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There is another simple fix, use the GM Small hole PCV Valve intended for V8 trucks that use a lot of oil. This "mimics" the LS6 PCV setup. It is GM PCV Valve, part number GM 12572717.

see

http://forums.corvetteforum.com/show...hole+pcv+valve
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Old Jul 13, 2008 | 08:44 AM
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One other thing, there are two of the new valley covers. The first is the earlier LS6 cover where the PCV valve remains in the line. The later is the 04 setup that was carried to the LS2, this has the metering internally and the PCV valve is eliminated.
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Old Jul 13, 2008 | 06:31 PM
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thanks for the info and replies guys....

hey "Patches",
I dont mind cutting out the section to make it fit, but you say after you did this mod. you didnt notice much difference ????
Well, I may not do it at all if there's no difference. But I'll wait for a few more replies to see if others are experiencing the same results as you.

I am still going to run a catch can, but I want to reduce the amount of oil getting to the catch can.

I do currently run a fixed oriface PCV valve and didnt notice much difference in oil consumption.

So there are 2 valley trays to choose from? do they have different part numbers? or am I to specify early? or late?
and which one would be the best to use?

thanks
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Old Jul 13, 2008 | 10:07 PM
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Old Jul 14, 2008 | 03:06 PM
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just ordered the 2 parts from Gene, nice guy and a great price

will try to update post after install with results.

thanks guys!
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Old Jul 14, 2008 | 08:50 PM
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If you really want to test the effectiveness of the conversion, run it without the catch can for a period of time and monitor the intake for oil intrusion then add the catch can and continue to monitor. It won't be an exact comparison because you won't be collecting oil and measuring like you do in a catch can but you should be able to tell if the manifold is staying cleaner after you add the catch can to the system.

Best of luck with the mod.
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Old Jul 16, 2008 | 09:33 PM
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Thank you kindly for the referrals... and the business. I really appreciate it!
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Old Jul 17, 2008 | 02:01 AM
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Originally Posted by vettenuts
One other thing, there are two of the new valley covers. The first is the earlier LS6 cover where the PCV valve remains in the line. The later is the 04 setup that was carried to the LS2, this has the metering internally and the PCV valve is eliminated.
Any idea what you're supposed to do about the missing knock sensor holes???? I just ordered an LS2 intake and it has no provisions for knock sensors
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Old Jul 17, 2008 | 10:30 AM
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aren't the knock sensors under the valley tray? in the block?
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Old Jul 17, 2008 | 11:05 AM
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Originally Posted by gfunk
aren't the knock sensors under the valley tray? in the block?
No. They actually pass through the valley cover (rubber grommets) to attach to the block.

NassyVette: The LS2 knock sensors were re-located to the sides of the engine block (one on each side), so the valley cover for them has no holes for knock sensors.
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Old Jul 17, 2008 | 12:20 PM
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Originally Posted by LoneStarFRC
No. They actually pass through the valley cover (rubber grommets) to attach to the block.

NassyVette: The LS2 knock sensors were re-located to the sides of the engine block (one on each side), so the valley cover for them has no holes for knock sensors.
I just realized that.... Is there anything I can do as far as retrofitting them to the outside of the block? or do I now have a $100 paper weight. :o
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Old Jul 17, 2008 | 02:09 PM
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Originally Posted by NassyVette
I just realized that.... Is there anything I can do as far as retrofitting them to the outside of the block? or do I now have a $100 paper weight. :o
You'll have to check the available threaded holes on the sides of the block in your particular case, but I'm fairly certain there are locations available. As I understand it, there is two ways you can go:

1. Use your existing knock sensors on the sides of your block. If you take that route, just be sure there aren't any thread incompatibility issues, i.e. your sensor having a different thread pattern than the available holes. If that's the case you may have to go the drill/tap route, or:

2. Use LS2 sensors (and their specific mounting bolts) to attach to your block. I'm fairly certain the LS2 type sensors use a separate mounting bolt and the sensors "hug" the block so-to-speak and have a sort of 90 degree design to them so that the connector points towards the rear when installed.

In either case you may have to either fab or buy knock sensor wiring harness extensions, as your exiting wires are probably going to be too short to reach the new locations. Check with either Casper Electronics or maybe Painless Wiring to see if they offer knock sensor wire harness extension. That would be my choice.
HTH
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Old Jul 17, 2008 | 02:17 PM
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Lonestar, thanks man, appreciate the tips
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