Re-use LS1 external PCV hoses for LS3 motor?
07-01-2010, 02:13 PM
#1
Re-use LS1 external PCV hoses for LS3 motor? I've read that the LS3 valley cover PVC system is different than even the LS6 valley cover. Ideally, should I re-use my Norris catch can and PCV tubing (which includes the valve) in the same manner it attached to the LS6 components, or do something different?
07-03-2010, 08:07 PM
#3
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i have a ls2 block in my car. I guess the valley cover has some kind of pcv valve built in. I just left it plugged and reused my catchcan setup (ls1 style) for at least 5000 miles and havent had an issue but i am looking for a way to redo this.
07-04-2010, 09:16 AM
#4
This thread indicates that if you choose to use a catch can, the external PCV is not needed because the LS3 intake already has it in the valley cover:
https://ls1tech.com/forums/generatio...how-route.html
I also read that you could run a u-tube between the LS3 valley cover and the intake manifold if you don't use a catch can.
https://ls1tech.com/forums/generatio...how-route.html
I also read that you could run a u-tube between the LS3 valley cover and the intake manifold if you don't use a catch can.
07-06-2010, 08:44 PM
#6
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I talked to Jason at Katech and here's what he said:
The PCV valve is in the valley cover and loops to the intake. The valve covers each have a fresh air line that needs to be tee'd together and routed to a fresh air source after the MAF and before the throttle body.
@phenomic id try john@scoggin dickey.. any of those places that have access to factory ls7 stuff should have it (im assuming you mean the dry sump VC plug)
The PCV valve is in the valley cover and loops to the intake. The valve covers each have a fresh air line that needs to be tee'd together and routed to a fresh air source after the MAF and before the throttle body.
@phenomic id try john@scoggin dickey.. any of those places that have access to factory ls7 stuff should have it (im assuming you mean the dry sump VC plug)
