New vs Old LS6 Valley Cover ?
New vs Old LS6 Valley Cover ? I had my car tuned and found i have a slight oil consumption issue. I was told to run the 5.3 pcv and ls6 valley cover and it would help. My question came up when i found everyone saying to go with the 04 "new style" valley cover but it doesnt use the same pcv. Does the new VC still work well for oil consumption or should I go with the old VC and the 5.3 pcv?
Last edited by JSmee99T/A; May 21, 2010 at 02:02 PM.
The new one has a built in oil/air separator, no external pcv valve needed. Install is really clean. I had one on my ls1 and I ordered the pre bent rubber hose with it. The new one should work fine for you.
The new style uses an internal valve in the ls6 valley tray, the old style uses a real old style pcv valve hooked up in a hose, cant comment on oil consumption, but I like this setup as its much neater hose wise, one c shaped hose from valley to tb, then one hose to pside valve cover, thats it!
what does the oil air separator do? and cajun I saw you posting in the threads i searched and read the new one had internal pcv replacement; but i didnt know if the oil consumption remedy im going for required the use of a fixed orifice 5.3 pcv.
where are you guys ordering these parts from? I am thinking this needs to be done to mine soon lol, at high rpm/under load mine pulls oil from the driver's side valve cover too
Trending Topics
Here is some info on the new design:
"What they did was to engineer valley mounted oil separators which uses internal baffling to force the crankcase vapors in a circuitous (think roundabout) flow. This in turn causes the oil to separate and drain back into the engine."
And also there is a fixed orifice set in the valley cover, therefore no need for external PCV valve. The older style does not have the orifice and therefore requires an external PCV valve.
Scoggin-Dickey carries both parts.
Part no for 04 style : 12577927 $74.69
http://sdparts.com/details/gm-factor...parts/12577927
Hose: 12594779 $3.29
http://sdparts.com/details/gm-factor...parts/12594779
"What they did was to engineer valley mounted oil separators which uses internal baffling to force the crankcase vapors in a circuitous (think roundabout) flow. This in turn causes the oil to separate and drain back into the engine."
And also there is a fixed orifice set in the valley cover, therefore no need for external PCV valve. The older style does not have the orifice and therefore requires an external PCV valve.
Scoggin-Dickey carries both parts.
Part no for 04 style : 12577927 $74.69
http://sdparts.com/details/gm-factor...parts/12577927
Hose: 12594779 $3.29
http://sdparts.com/details/gm-factor...parts/12594779
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
This is what I had to cut off for the block. I used a hacksaw to cut some maybe 1/2" notches towards the block, and then used some vise grips to break it off. I found this to be better than a dremel that blew metal shavings everywhere. The valley cover fit in snug. I didn't take any pics of the valley cover internals because you can see those online...
This is from LS1howto
and then what it looks like without it. Note to the left of the throttle body the U-Shaped hose pulling vacuum from the valley cover to the intake. No more PCV hose running around the motor. Much cleaner..
I was also replacing a bad knock sensor while I was in there
This is from LS1howto
and then what it looks like without it. Note to the left of the throttle body the U-Shaped hose pulling vacuum from the valley cover to the intake. No more PCV hose running around the motor. Much cleaner..
I was also replacing a bad knock sensor while I was in there
Scoggin-Dickey carries both parts.
Part no for 04 style : 12577927 $74.69
http://sdparts.com/details/gm-factor...parts/12577927
Hose: 12594779 $3.29
http://sdparts.com/details/gm-factor...parts/12594779
This is what I had to cut off for the block. I used a hacksaw to cut some maybe 1/2" notches towards the block, and then used some vise grips to break it off. I found this to be better than a dremel that blew metal shavings everywhere. The valley cover fit in snug. I didn't take any pics of the valley cover internals because you can see those online...
This is from LS1howto
and then what it looks like without it. Note to the left of the throttle body the U-Shaped hose pulling vacuum from the valley cover to the intake. No more PCV hose running around the motor. Much cleaner..
I was also replacing a bad knock sensor while I was in there
This is from LS1howto
and then what it looks like without it. Note to the left of the throttle body the U-Shaped hose pulling vacuum from the valley cover to the intake. No more PCV hose running around the motor. Much cleaner..
I was also replacing a bad knock sensor while I was in there
That's the older style LS6 cover though. Does anyone have pics of the new style LS6 cover?
