How to identify ls6 sodium filled valves?

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Nov 11, 2005 | 05:35 PM

Lostpatrolman

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From: Largo, Fl.

How to identify ls6 sodium filled valves?

I have a set of ls6 heads, but do not know what year they are. How can you tell if they have the sodium filled valves? Are there special #s stamped anywhere?

Nov 11, 2005 | 05:45 PM

davered00ss

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The ones without the sodium have a orange mark on the vavle.

Nov 11, 2005 | 05:50 PM

Lostpatrolman

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My intakes have an orange mark, and the exhaust have a white one. What does that mean?

Nov 11, 2005 | 08:57 PM

TD's z

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If the hard tip looks like it has a gap and is not in all the way it is not a ls6 valve
. The year of the heads can tell you ls2 heads do not have ls6 valves the paint
does not mean much .

Nov 11, 2005 | 08:59 PM

TD's z

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sorry the year is cast in the head under the intake ports

Nov 11, 2005 | 10:00 PM

Lostpatrolman

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The only #s under my intake ports are 28 5.7 and 05 . There is no way it is an 06 head since it is a 5.7.

Oct 31, 2009 | 07:44 PM

rtbcoop

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From: Colorado Springs

Quote:

Originally Posted by Lostpatrolman

I have a set of ls6 heads, but do not know what year they are. How can you tell if they have the sodium filled valves? Are there special #s stamped anywhere?

Crack them open and pour wanter in them. If you can't see anymore, they're sodium!

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Nov 1, 2009 | 07:52 AM

DeanJ

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From: Mt. Holly N.C.

Quote:

Originally Posted by cutlass_455

Would weighing it be a way??

I weighed mine beside stock LS1 valves, IIRC they were about 10 grams lighter. It's been a while and I don't remember the actual weight. Oh I can weigh the LS1 valves tomorrow and report that weight. LS6 heads are being CNCed now.Later, Dean.