prot68

Ive installed an 08 ly6 in a 68 chevelle using mast m90 controller tuned as speed density. Drivers pcv line on rear of valve cover is plumbed to top of intake as factory, what about the incoming line on front of passenger valve cover? Small filter, plug it?? No MAF or intake tube just a filter on the throttle body currently. Whats correct?????

chevyboy91188

iTrader: (15)

you need to hook that line into the intake if not it will pull un-metered air just like a vacuum leak I know thats for regular setup. I'm not sure if it works like that for speed density

Irish350

iTrader: (14)

this has every pcv guide youd need a couple pages in

https://ls1tech.com/forums/generatio...outing-ok.html

prot68

thanks for the link: From my interpretation of the info my drivers side rear port of valve cover connects to the top of intake per oem. The incoming air port on passenger valve cover should attach to the throttle body or air inlet tube post MAF(which I dont use-speed density). The factory throttle body has no provision for connecting to the valve cover port. Any thoughts?

sierrac3_s2000

iTrader: (6)

I run speed density on my L92 with VVT and I have mine connected to a small filter and hidden under the fuel rail cover. Works fine for me.

Daves Restoration

This link only shows Gen III engines. I'm curious to know how the PCV system works on an LY6 as well.... I see no PCV valve at all.

Irish350

iTrader: (14)

Sounds good; most people would just tie into the intake tubing post maf, like you said.

@ daves restoration, I havent looked at them specifically but I just assumed my ls2/3 setup would work like an ls6 (which is what I had on my old build, conveniently enough). That said, idk where the valve would go if you dont see one on the factory setup

Daves Restoration

The only thing I see is the hose from the rear of the driver's valve cover to the top of the intake, and the hose on the passenger front valve cover that goes to the intake bellows. No lines from the valley pan or anywhere else that I see.

Thanks