LS6 Heads
08-15-2008, 04:07 PM
#5
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the ls6 heads have lighter valves but no way of knowing just by looking. also i dont think there is any gains from the lighter valves other than longer valvetrain life.
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08-15-2008, 08:40 PM
#8
Okay, we're good on the valves... that's the whole reason behind asking on how to visually identify them. I've read much info on how they are superior to the ls2 version because of the weight differences. Supposedely they are more stable in the high RPMs and prevent valve float. But if there is no way to visually identify them, then its pretty much an integrity thing on the seller to honestly disclose what vehicle they came off of.
08-15-2008, 08:50 PM
#10
That just freakin sucks. No, dammit, I refuse to believe that there's no way to tell. There has to be a "trained eye" out there somewhere... even if its a tip like "look for a casting tab to the left of the whatever" it would be helpfull. Last edited by KurtRardin; 08-15-2008 at 09:06 PM.
08-15-2008, 10:10 PM
#13
Eh, well I guess that sums it up. I was perfectly content with purchasing any ol' set of 243 heads a few days ago until when I stumbled upon a thread talking about 243 heads from 2004 or 2005 I think. Patriot and PredatorZ were in there talking up the Z06 version with sodium valves and how they were far superior to the regular LS2 head. But, I guess in the end it doesnt really matter. You can find 243 heads goin for $350 sometimes. A way to tell if they were '03 and '04 Z06 heads would be sweet, as the valves cost about $500 by them self... or such was the case a few years ago. Z06 heads for $350 would really be a smokin' deal. But, I guess the only place it really mattered is when you're talkin about how sweet the parts on your car are. "oh yeah? well I've got sodium filled exhaust valves!"
08-15-2008, 10:15 PM
#14
Eh, well I guess that sums it up. I was perfectly content with purchasing any ol' set of 243 heads a few days ago until when I stumbled upon a thread talking about 243 heads from 2004 or 2005 I think. Patriot and PredatorZ were in there talking up the Z06 version with sodium valves and how they were far superior to the regular LS2 head. But, I guess in the end it doesnt really matter. You can find 243 heads goin for $350 sometimes. A way to tell if they were '03 and '04 Z06 heads would be sweet, as the valves cost about $500 by them self... or such was the case a few years ago. Z06 heads for $350 would really be a smokin' deal. But, I guess the only place it really mattered is when you're talkin about how sweet the parts on your car are. "oh yeah? well I've got sodium filled exhaust valves!"
Well did Patriot and Predator Z say the heads were better only because of the valves??? They would know more than me about it, and yes the LS6 valves are longer, based on the research I have done the Z06 uses longer valves and a smaller base circle cam so you still end up using 7.40" pushrods.
I weighed the valves to confirm. I would much rather have lightweight valves if it is an option.
And could you please post a link to the thread you are referring too? I would love to read up on it.
For whats its worth I just picked up a set of Z06 heads and cam from an 03 for 300 dollars, so I got Z06 heads for under 300. Found them on craigslist.
08-16-2008, 11:11 PM
#18
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There's a difference between the visual appearance of the exhaust valve faces - versus the standard exhaust valve, the sodium version has a narrower "ring" where the tulip shape flattens out near the perimeter. If you were to take note of the valve face shape of a standard exhaust valve, you will easily be able to tell the sodium valve apart from it.
Also, to clear some confusion, the LS6 valves are approx. 0.030" longer than the standard valves.
Also, to clear some confusion, the LS6 valves are approx. 0.030" longer than the standard valves.
08-17-2008, 12:11 PM
#20
There's a difference between the visual appearance of the exhaust valve faces - versus the standard exhaust valve, the sodium version has a narrower "ring" where the tulip shape flattens out near the perimeter. If you were to take note of the valve face shape of a standard exhaust valve, you will easily be able to tell the sodium valve apart from it.
Also, to clear some confusion, the LS6 valves are approx. 0.030" longer than the standard valves.
Also, to clear some confusion, the LS6 valves are approx. 0.030" longer than the standard valves.
I want to see a picture comparision to understand what that meant, if someone wants to do it, I have the Z06 valves I can contirbute the pics of those.