Generation III Internal Engine 1997-2006 LS1 | LS6
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Valve spring identification

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Old Mar 24, 2007 | 08:59 AM
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SStingray's Avatar
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From: Spring Hill TN USA
Default Valve spring identification

Just trying to clear up some doubts. Has anyone ever seen factory LS6 valve springs with a touch of light blue paint on only two coils? I have new Comp 918's on my engine and they had a solid med. blue stripe on the entire length of the spring. To the best of my knowledge, all of the factory LS6 springs were yellow. I tried a search on blue stripe valve springs and only find the Comp 918's which as stated above I have purchased new in the past and am familiar with their appearance. The springs in question have very light blue to medium blue marks on the upper or lower 2 coils only.
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Old Mar 24, 2007 | 10:59 AM
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From: BFE
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Originally Posted by jrp
10. 01 LS6 springs: max lift .540

O.D:
I.D:
seat pressure: 90 @ 1.800
open pressure 260 @ ?

11. 02 LS6 springs or green: max lift ~.580

O.D
I.D:
seat pressure: 90 @ 1.800
open pressure: 294 @ ?

12. 03+ LS6 springs(orange): max lift ~.580

O.D
I.D:
seat pressure: 90 @ 1.800
open pressure: 294 @ ?
From cam sticky
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Old Mar 24, 2007 | 04:05 PM
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Thanks! Exactly what I was looking for. I'll do a load check at 1.8 and just for curiosity I'll check some stock LS1 springs for comparison. I'll also check at multiple intervals up to .550 I bought some "new LS6 springs" from someone on the board and I have received 2 descriptions from the person so far as to what they are so I'd better check to be sure.
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