LS6 pcv?

[GottaHaveLS1]

I was wondering if this is worth buying and switching out. I have a 99 TA with 70k on her. My car is running fine... just could use a tune that I'm getting in the spring. I don't really understand what the PCV valve does? Should I replace it?

[ls1blackbeauty98]

you're supposed to change it atleast every 60. its a REALLY easy job, prolly take u about a min *litterally* its good to change them in my opinion. it keeps the pressures in your engine even. i dont really know how esle to describe what it does, maybe someone else can help me out in explaining..

[GottaHaveLS1]

wheres the best place to get one? autozone or somethin? should i order it online?

[INMY01TA]

LS6 valley/pcv is useless. Did this swap years ago and got just as much oil in the intake as before.

[blue02Z]

like blackbeauty said, it keeps crankcase pressures down. it is a one way valve that uses manifold vacuum to 'suck' out the blowby gases out of your crankcase and delivers em to your cylinders to burn it up. if it gets clogged, you can start to get oil leaks cuz the pressure in the crankcase will force its way out, usually thru gaskets

[Bottesini]

I suggest to everyone get an oil catch can. After about my last oil change I emptied my catch can out (which is past the PCV) and it was some of the nastiest gunk that I have seen in a long time. Worse then the stuff I used to see on diesel engines that would run hundreds of hours in the gulf.