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[Z06] Valve Springs

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Old Jun 8, 2009 | 05:50 PM
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Default Valve Springs

Where/What kind/How much??? Im planning on replacing all the stock valve springs in my LS6, can i get a little info before makeing a purchase? (its an all stock motor)
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Old Jun 8, 2009 | 10:42 PM
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doubt you need any. How many miles?
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Old Jun 8, 2009 | 11:17 PM
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Bought mine from GM Parts Direct for $55.
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Old Jun 9, 2009 | 03:16 PM
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Not sure these are the correct set for what you are looking for. 2 friends of mine have the same year Z "03" as I do and both have broken a spring. Both are over 50K miles. Both are running Patriot Performance.

https://www.patriot-performance.com/...&cat=52&page=2

Hope this helps out.
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Old Jun 9, 2009 | 03:27 PM
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I wanted to replace my stock valve springs for "piece of mind", so I did research on the Internet for about a month before deciding to go with PAC 1218 springs.
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Old Jun 9, 2009 | 04:28 PM
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Bump. . .iv gone through 4 busted valve springs already. I need the peace of mind. . .so im trying to replace all 16 while its n the shop.
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Old Jun 9, 2009 | 05:13 PM
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Oh, BTW, I got a great deal on the PAC 1218's from Byunspeed. (A forum vendor) The springs were $215 at the PAC Racing website, but I got them for $165 from Byunspeed and free shipping. These are beehive springs, so you should be able to reuse the factory retainers/locks/etc. unless you want to replace those while you're in there. The spring rate is higher than stock, so it that worries you, you might want to look into getting the PAC 1215's, which are closer to the stock specs. Or just get some LS2 springs.
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Old Jun 10, 2009 | 08:38 PM
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Get some titanium retainers while you are changing them. I used Dual Comp springs and titanium retainers
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Old Jun 10, 2009 | 09:12 PM
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Originally Posted by acano1728
Where/What kind/How much??? Im planning on replacing all the stock valve springs in my LS6, can i get a little info before making a purchase? (its an all stock motor)
I also broke 2 valve springs.. seems the springs in the 2002 and 2003 early models couldn't hold the increase cam lobe.. The new spring that I got in late 2003 is actually the ls2 spring.. the part # is 12586484. I did a lot of searching and never heard of a 2004 breaking a valve spring at no load..

Good luck.. what ever you choose it's money well spent.. insurance..
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Old Jun 11, 2009 | 10:08 AM
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Originally Posted by 03QuicksilverZ06
I also broke 2 valve springs.. seems the springs in the 2002 and 2003 early models couldn't hold the increase cam lobe.. The new spring that I got in late 2003 is actually the ls2 spring.. the part # is 12586484. I did a lot of searching and never heard of a 2004 breaking a valve spring at no load..

Good luck.. what ever you choose it's money well spent.. insurance..

Have you broke ne of the LS2 springs since you replaced them? How long have you been runnin'm?
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Old Jun 11, 2009 | 10:33 AM
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I would be interested in knowing what's the best choice as well, i have an 02 LS6.

While were at it, i would like to get my hands on some of these as well:
http://i88.servimg.com/u/f88/11/68/31/90/scorpi14.jpg
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Old Jun 24, 2009 | 10:01 AM
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Just for info i contacted Roger at vinci high performance and he has sorted out the valve springs i need.

ow i ordered some 1.8 roller rockers too
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Old Jun 24, 2009 | 12:08 PM
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Originally Posted by 03QuicksilverZ06
I also broke 2 valve springs.. seems the springs in the 2002 and 2003 early models couldn't hold the increase cam lobe.. The new spring that I got in late 2003 is actually the ls2 spring.. the part # is 12586484. I did a lot of searching and never heard of a 2004 breaking a valve spring at no load..

Good luck.. what ever you choose it's money well spent.. insurance..
Yeah, I still haven't heard of a bunch of 2004's w/ broken springs. I think maybe? there was 1 from our old thread on the subject. There's been more than enough time now for the 2004 to show issues if it had them.
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