BOA279

iTrader: (1)

I did the LS6 PCV mod and have a few questions...

1. I bought GMPN 12568010 for the connection between the valley port and intake but it rests directly against the EGR valve bracket...Im worried because its a hard plastic tube that it will eventually rub through...any suggestions?

2. Speaking of EGR....whats the approximate MPG loss removing it?

3. If I put breathers on both valve covers, (with the LS6 PCV mod) do I still need the fresh air hose between the passenger valve cover and the throttle body? (Thinking about getting a set of valve covers without the port...to clean it up)

4. anyone have even a clue as to the maximum height the valve covers can be before there is interference with cowl area??

Thanks in advance!!

LS6427

iTrader: (2)

Mine is so simple and has been working awesome for years.

Little breather on the drivers side valve cover....(its a small fuel filter I fitted on there with the grommet)....it draws in fresh air...and that air crosses the crankcase and over to the other valve cover, where it gets pulled out by a single vacuum line on the passengers valve cover. That vacuum line has a variable "T" valve on it right before the PCV valve. I set it to about 1/4 the strength of the factory suction strength. It works great and zero oil in my intake....zero. Perfectly clean oil for years, not a drop of moisture in the crankcase either.

I capped off the valley cover port and the port on the TB.

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sjsingle1

iTrader: (1)

i suggest you switch over to the NEW style LS6 valley cover

BOA279

iTrader: (1)

@LS6427:

Why even do the LS6 mod and then cap it? Where did you get the variable "t" fitting?

@sjsingle1:

Whats different about the NEW style??

sjsingle1

iTrader: (1)

the holes act as a catch can ...IMO

sjsingle1

iTrader: (1)

no PVC valve like the old style

LS6427

iTrader: (2)

It was just included when my engine got built. I didn't even know what that mod was when it went together. It was just installed by the builder.

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BOA279

iTrader: (1)

Can anyone confirm that this hose can be deleted with dual breathers and LS6 PSC mod?

t/a98

iTrader: (6)

My catch can routing ok? Search Is your friend. The subject has been beaten to death over and over. You can find this stuff out without the long wait. Not fussing, just trying to help you out.

Although not in total agreement, most of the community agrees that running the ls6 valley with fresh air from the throttle body to the valve cover is the best. I forget why breathers are bad. A catch can is nice to have also but not necesary.. You can cap the drivers side though, that helps clean up the engine bay..

If all your worried about is looks, well I think 2 feet of black hose looks much better than a bunch of mismatched filters under the hood

t/a98

iTrader: (6)

I don't think you will lose mpg either, egr is purely for emissions standards...

HoLLo

iTrader: (17)

Definitely get the 04+ LS6 Valley Cover, I have what sjsingle1 has. I used to have to throw in a quart of oil between changes, now I have not a single drop loss. It's also an engine bay appearance mod, you get to remove the hoses running around the motor. Looks much much cleaner

nicenice

much cleaner? Might be cool.

Spectre86

iTrader: (42)

perfect, exactly what i needed to know