LS6 valley cover and aftermarket valve covers help!!
10-24-2012, 09:08 PM
#1
LS6 valley cover and aftermarket valve covers help!! Due too winter starting soon and me getting the urge to go fast I've decided to build my ls1.. Not trying to sound like a noob but my ls1 would literally suck oil like no other.. most people recommend the LS6 valley cover (new) which I am going to get along with the catch can. A few things I wanted to know are what are the things I have to do to make it work (I heard some cutting of block was involved) Also since a new PCV system is located on the cover do I get rid of my current one. Also the valve covers I have came with no baffled openings at all What do I need to do to make these work with stock applications since on stock covers there is like 3 hoses connected to them. any that i can just delete? I'm also keeping the secondary air injection system on my car since my emissions are strict here. Thanks again for taking the time to look below are pictures of my valve covers.
10-24-2012, 11:24 PM
#2
Depends on what year block you have. 1168 blocks and some 01/02's you don't have to cut. If you have no ribs and it's smooth under the valley when you pull it, no cutting required. Of course, by the time you see that you'll clearly see there's no ear to cut anyway....
Yes, ditch the stock PCV system as a whole.
What LS6 valley did you get? The 04+ with the integrated PCV is what I would use. Couple that with a Norris Catch Can. Nipple from valley cover goes into the top of the can, and the clean side is the side nipple on the can. Run it into your nipple on the passenger side of the intake manifold.
And if those are eBay valve covers, I'd ditch them. I haven't heard of a success story yet; They've all leaked.
Yes, ditch the stock PCV system as a whole.
What LS6 valley did you get? The 04+ with the integrated PCV is what I would use. Couple that with a Norris Catch Can. Nipple from valley cover goes into the top of the can, and the clean side is the side nipple on the can. Run it into your nipple on the passenger side of the intake manifold.
And if those are eBay valve covers, I'd ditch them. I haven't heard of a success story yet; They've all leaked.
10-25-2012, 01:42 AM
#4
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I know it's done alot but I thought with a MAF system you need all fresh air in to be after the MAF so its metered air entering the engine. Are you speed density?
10-25-2012, 06:30 AM
#6
The secret I found with the tall aftermarket valve covers is to run the o ring gasket and rub a small even amour of "gasket maker" on the lip of the head.
Let the "gasket maker" set up a little, then put the valve covers on and run the bolts just snug...donor over tighten or it will make the top and bottom of the valve covers spread and not seal.
Let the "gasket maker" set up a little, then put the valve covers on and run the bolts just snug...donor over tighten or it will make the top and bottom of the valve covers spread and not seal.
10-25-2012, 10:38 AM
#7
I'm pretty sure it is the new style valley cover the part # is 12577927 and for the valve covers I'm pretty much fd because I already sold my old ones but other than a breather on the filler cap is there anything else I need? I have plenty of an fitting laying around in which to drill and weld on to the valve covers if I need to btw my block looks the this I can't remember or look since its currently at the machine shop since I'm going with a forged bottom end
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10-25-2012, 01:48 PM
#9
Just to clarify ... the 04+ valley cover has a 1 mm dia orifice built into the PCV hose nipple that comes off the front RH corner of the valley cover. There was never an actual "valve" used in that design. There was simply a hose that ran from the valley cover nipple to the intake manifold nipple - no valve in the hose like pre-04s had. The 1 mm orifice is what controls the vapor flow in this case.
