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Anyone Know Why GM Stopped Selling Sodium Filled LS6 Exh Valves?

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Old 03-30-2010, 06:56 PM
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Default Anyone Know Why GM Stopped Selling Sodium Filled LS6 Exh Valves?
I've been looking for a set, but every dealer / parts house I call says GM doesn't sell them any more. Were there warranty issues? Quality issues?
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Old 03-30-2010, 09:50 PM
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probably because they quit selling the LS6 and nobody is buying the valves when there is cheaper alternatives out there.
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Old 03-30-2010, 10:19 PM
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Originally Posted by b.d.d.
I've been looking for a set, but every dealer / parts house I call says GM doesn't sell them any more. Were there warranty issues? Quality issues?
Actually go to rockauto.com they sell all factory stock equipment dirt cheap and that's where I got my hollow intake and sodium filled exhaust.

They are considered factory stock equipment.
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Old 03-30-2010, 10:24 PM
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Originally Posted by bww3588
probably because they quit selling the LS6 and nobody is buying the valves when there is cheaper alternatives out there.
I would think that too, but they still make SBC motors. Well, maybe not GM, but someone does.
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Old 03-31-2010, 02:21 PM
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I believe the LS3 exhaust valve is sodium filled with a 1.59 diameter head . I know the intake is a hollow stem .
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Old 03-31-2010, 03:14 PM
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LS3 exhaust valves are solid and are identical to L92 exhaust valves.
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Old 03-31-2010, 06:17 PM
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Originally Posted by bww3588
probably because they quit selling the LS6 and nobody is buying the valves when there is cheaper alternatives out there.
Such as?? I'm not seeing anything as light as the sodium filled valve for less than GM's $30 price. If you know of something, let me know.
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Old 03-31-2010, 06:20 PM
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Originally Posted by 02*C5
Actually go to rockauto.com they sell all factory stock equipment dirt cheap and that's where I got my hollow intake and sodium filled exhaust.

They are considered factory stock equipment.
No such critter exists at that site either.
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Old 03-31-2010, 07:10 PM
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Originally Posted by b.d.d.
No such critter exists at that site either.
Ill do some homework because they have 2 one has a rock-auto number and the other are made by seal power so Ill find out I just cant remember which one was the ones I ordered its been about a year
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Old 03-31-2010, 08:38 PM
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Originally Posted by b.d.d.
I've been looking for a set, but every dealer / parts house I call says GM doesn't sell them any more. Were there warranty issues? Quality issues?
Pace Performance website indicates they have them (P/N 12565312) for $36.95 each (MRSP is $50.67). They show the intake valve (P/N 12565311) as discontinued.
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Old 04-01-2010, 01:08 AM
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My friend, thank you very much for finding this. Very much appreciated.
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Old 04-01-2010, 01:51 PM
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does any one know if the LS6 from a CTS-V have the sodium filled valves?
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Old 04-01-2010, 03:47 PM
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Originally Posted by desertLS1
does any one know if the LS6 from a CTS-V have the sodium filled valves?
Yes, they do.
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Old 04-01-2010, 03:50 PM
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Did my research they do not have them any more. The stock they had ran out.
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Old 04-01-2010, 05:25 PM
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Originally Posted by Darkman
Yes, they do.
nice!!
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Old 04-02-2010, 04:46 AM
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12578455 1.610" 8mm Stock replacement sodium-filled stem valve used in LS7 engines

12605525 1.590" 8mm Stock replacement sodium-filled stem valve used in LS9 engines

12565312 1.500" 8mm Stock replacement sodium-filled stem valve used in LS6 engines
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