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Old Jun 30, 2013 | 12:51 PM
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Default pcv system ?

anyone re use stock pcv system with Fast intakes? or just upgrade to a catch can
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Old Jun 30, 2013 | 12:53 PM
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Originally Posted by GMtechmatt
anyone re use stock pcv system with Fast intakes? or just upgrade to a catch can
If you want to avoid oil in the new intake LS6 valley cover and a catch can.
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Old Jun 30, 2013 | 07:05 PM
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Originally Posted by Decadence75
If you want to avoid oil in the new intake LS6 valley cover and a catch can.
^THIS I did this upgrade to my c5 with a FAST and I have no oil in my intake now and my catch can barely catches much of anything because of the ls6 valley cover. It cleans up the engine bay a lot too by getting rid of all of the crappy ls1 lines.

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Old Jul 1, 2013 | 07:07 PM
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AmarilloWS6, in your first pic I'm guessing you unplugged the TB vac line just to better show the catch can routing?? Also if I switch to an 04+ ls6 valley on my 99 ls1 (has an ls6 intake) is there interferance between the block and pvc on valley cover?? Sorry OP for the hi-jack but he seems to know the deal on this!!
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Old Jul 1, 2013 | 07:14 PM
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Originally Posted by Cra-Z Larry
AmarilloWS6, in your first pic I'm guessing you unplugged the TB vac line just to better show the catch can routing?? Also if I switch to an 04+ ls6 valley on my 99 ls1 (has an ls6 intake) is there interferance between the block and pvc on valley cover?? Sorry OP for the hi-jack but he seems to know the deal on this!!
You're right, I was just trying to show the catch can routing better. On a 99 you will have to cut that little provision on your block, sounds scary but it really is way too easy, I wouldn't let that stop you. My car though, somehow has an 01+ block, I'm assuming the previous owner had the block replaced at one point, but kept the 853 heads, ls1 cam, and ls1 PCV system. Here is a thread I posted in this week answering all the questions you need to know about this swap. It cleans up your engine bay and keeps your motor cleaner as well!
https://ls1tech.com/forums/generatio...-pcv-help.html
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Old Jul 1, 2013 | 07:26 PM
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+2 on the ls6 valley cover. Im about to do one in a few weeks too, and its gonna help clean the engine bay a lot.

Heres what gets cut out


Just make sure you cover everything REALLY good. Also make sure you get the 04+ valley cover as amarillo mentioned. Part number 12577927
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Old Jul 1, 2013 | 07:47 PM
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This is my block in my 1999 c5. The blocks without the provisions started in 2001, so I was pretty stumped when I saw that mine didn't have it, especially since it still had 853 heads, ls1 cam, and ls1 PCV. I wonder what happened to the original? lol
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Old Jul 1, 2013 | 08:01 PM
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^^^ lucky, i hope my car's previous owner did a block swap too lol

Same thing happened with my clutch. I bought a monster clutch only to find out i already had a spec clutch in lol
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Old Jul 1, 2013 | 08:14 PM
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Originally Posted by Zlow28
^^^ lucky, i hope my car's previous owner did a block swap too lol

Same thing happened with my clutch. I bought a monster clutch only to find out i already had a spec clutch in lol
Haha I know! And the car was bone stock when I bought it too besides the block swap I guess? I love my Monster Stage 2 clutch! Good choice.
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Old Jul 6, 2013 | 03:21 PM
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Great info guys, sorry I didn't get back sooner it's been a crazy week!! I remembered this from a friends project a few years back but wasn't sure what parts were used. Thanks for the help!!! Larry.
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