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PCV Valve Upgrade for 2000 LS1??? Need some input please

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Old Sep 30, 2008 | 11:32 AM
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Default PCV Valve Upgrade for 2000 LS1??? Need some input please

I am planning on some weekend work to my 200 ls1, and would like some input on what to do about the pcv system for reducing my oil consumption. I have read through lots of the past posts, a few of them would not open up for me, but still I have no real clear idea of the best alternative to the stock set up. I am replacing and relocating the oil pressure sender this weekend, as well as installing an LS6 intake with a ported TB, and I would like to update the PCV at the same time. Let me know what my best option is. I do not race the car much at all, most of the driving is in town, just a few high rpm revs a day. Any input is greatly appreciated. Thanks!!
Chris
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Old Sep 30, 2008 | 12:32 PM
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Chris, search the forum for "catch cans"....
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Old Sep 30, 2008 | 01:11 PM
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Originally Posted by thmupr
I am planning on some weekend work to my 200 ls1, and would like some input on what to do about the pcv system for reducing my oil consumption. I have read through lots of the past posts, a few of them would not open up for me, but still I have no real clear idea of the best alternative to the stock set up. I am replacing and relocating the oil pressure sender this weekend, as well as installing an LS6 intake with a ported TB, and I would like to update the PCV at the same time. Let me know what my best option is. I do not race the car much at all, most of the driving is in town, just a few high rpm revs a day. Any input is greatly appreciated. Thanks!!
Chris
So to be clear, is your engine using an inordinate amount of oil?
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Old Sep 30, 2008 | 01:59 PM
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Originally Posted by lucky131969
So to be clear, is your engine using an inordinate amount of oil?
Not really, about 1/2 quart between changes ~62k miles on the motor. There is a little build up in the manifold.


I did read a lot of the articles on catch cans, is that the best to do, or a filter? What about the pvc LS6 upgrade, is it worth the trouble?

Just trying to get a feel for the best resolution.
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Old Sep 30, 2008 | 02:15 PM
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The new PCV valve is a very cost effective assistance to the LS oil in the intake problem.

Since you are doing the intake manifold for another 10-15 minutes and approx $60-75 (used) I would think about an LS6 valley cover.

I have a 2000 and although I do not use very much oil I did the valley cover, catch can and PCV valve and noticed a substantial difference in the amount of oil I saw in the throttle body area.
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Old Sep 30, 2008 | 06:31 PM
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Originally Posted by J.R.
The new PCV valve is a very cost effective assistance to the LS oil in the intake problem.

Since you are doing the intake manifold for another 10-15 minutes and approx $60-75 (used) I would think about an LS6 valley cover.

I have a 2000 and although I do not use very much oil I did the valley cover, catch can and PCV valve and noticed a substantial difference in the amount of oil I saw in the throttle body area.
Z06 vally cover, cross over tube block offs for the rear and I use a catch can! no more oil consumtion

The vally cover p/n 12568002 from GM parts house is $64.71, the plug to block the valve cover hole was $5.71 and I don't remember the price of the cross over block offs but you will need those with the LS6 intake anyway

Last edited by Finja; Sep 30, 2008 at 06:40 PM.
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Old Oct 1, 2008 | 07:09 AM
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OK.. so the LS6 valley cover is worth modifying the block, but I do still need to run a catch can to keep out the rest of the oil. Any info on how much clearance I need on the block? Thanks
Chris
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Old Oct 1, 2008 | 09:13 AM
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I currently have an Elite Engineering LS1 catch can and it's one of the best I've seen. It looks like it belongs under the hood - good quality and zero fit issues too.
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Old Oct 1, 2008 | 10:40 AM
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Chris,

You should not have to modify block. You may have to use a block off for rear coolant lines as the LS6 intake manifold will not clear the LS1 coolant lines unless you notch the intake manifold. This is not a major project (just a dremel tool and a few minutes). Changing to an LS6 valley cover just means you need to change the routing of your breather hoses. I would still definitely run a catch can.

I haven't searched previous threads recently but I believe if you do a search there are some photos on this install.

J.R.
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Old Oct 1, 2008 | 01:01 PM
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Originally Posted by J.R.
Chris,

You should not have to modify block. You may have to use a block off for rear coolant lines as the LS6 intake manifold will not clear the LS1 coolant lines unless you notch the intake manifold. This is not a major project (just a dremel tool and a few minutes). Changing to an LS6 valley cover just means you need to change the routing of your breather hoses. I would still definitely run a catch can.

I haven't searched previous threads recently but I believe if you do a search there are some photos on this install.

J.R.
I was reading in some past posts about needing to clearance the block for the LS6 valley cover to clear the built in PCV. Is the 2000 block different from the earlier (97-99) model years? I'll try to find the post I am referring to.
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Old Oct 1, 2008 | 04:19 PM
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Chris,

I did not have any block clearance issues. I did, however, install the new PCV valve after the catch can and before the throttle body.

J.R.
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Old Oct 1, 2008 | 11:17 PM
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Originally Posted by thmupr
I was reading in some past posts about needing to clearance the block for the LS6 valley cover to clear the built in PCV. Is the 2000 block different from the earlier (97-99) model years? I'll try to find the post I am referring to.
You do have to cut a little piece out og the block in the vally. Not a big deal though. Just make sure you keep the stuff out of the engine. I had a write up on it also. I will see if I can find it
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Old Oct 2, 2008 | 07:09 AM
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Originally Posted by J.R.
Chris,

I did not have any block clearance issues. I did, however, install the new PCV valve after the catch can and before the throttle body.

J.R.
J.R. - You are just talking about the actual PCV valve, Correct? I was referring to the actual LS6 Valley cover plate.
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Old Oct 2, 2008 | 09:52 AM
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Chris,

I thought it sounded a little strange. On my block I did not have to grind anything. The LS6 valley cover fit without issues. This was originally a short block from Texas Speed so when they assembled it there is a possibility they may have thought that most persons would install an LS6 valley cover and made adjustments.

J.R.
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Old Oct 2, 2008 | 03:13 PM
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Originally Posted by J.R.
Chris,

I did not have any block clearance issues. I did, however, install the new PCV valve after the catch can and before the throttle body.

J.R.

Note: Always plumb the PCV valve upstream of (before) the catch can, since the PCV valve needs to be lubricated with oil in order to maintain its functionality.
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Old Oct 2, 2008 | 08:58 PM
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Originally Posted by J.R.
Chris,

I thought it sounded a little strange. On my block I did not have to grind anything. The LS6 valley cover fit without issues. This was originally a short block from Texas Speed so when they assembled it there is a possibility they may have thought that most persons would install an LS6 valley cover and made adjustments.

J.R.
It was probably the newer style block that was clearanced like the LS6. The factory LS1 blocks, 97-00, you have to cut the little piece out

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

here is the write up

Last edited by Finja; Oct 2, 2008 at 09:05 PM.
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