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What LS6 Heads Do I Want?

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Old 03-24-2011, 12:20 PM
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PM me for a dealer website that is selling brand new GM LS6 heads with hollow intake valves and sodium filled exhaust, ls6 springs and locks/seals installed. FOR LESS THAN $490 each. They even have free shipping on orders over $199 ! All genuine GM parts.

I just came across them yesterday in my search for parts.


EDIT: ADD

GM LS6 heads are $473.09ea. The true LS6 with hollow stem intake and sodium filled exhaust valves!

GM part#12564824
Old 03-27-2011, 08:24 AM
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Like all the info
Old 03-27-2011, 06:34 PM
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Car craft February of 2009 had a article on the LS6 (243) heads and told the difference in the casting procedures that had 2 seperate casting plants and Ican't remember where I seen that the ones that had the A right below the spark plug whole where worth around 6 to 10 HP or something like that, I don't remember where I read that but hope this helps.
Old 03-27-2011, 06:51 PM
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Originally Posted by Evans752
Car craft February of 2009 had a article on the LS6 (243) heads and told the difference in the casting procedures that had 2 seperate casting plants and Ican't remember where I seen that the ones that had the A right below the spark plug whole where worth around 6 to 10 HP or something like that, I don't remember where I read that but hope this helps.


SEE THE PHOTO MARKED....Here's a secret



http://www.carcraft.com/techarticles...ads/index.html
Old 03-27-2011, 07:50 PM
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Is it true the ls6 has titanium retainers. If so that will save me a little
Old 03-27-2011, 08:09 PM
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Try to find a set of 243's with Triangles cast in the head .
They say this is worth an additional 10 H.P.

Have them stage 2 cnc ported by TEA Total engine airflow. You cant go wrong.
Old 03-27-2011, 08:17 PM
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Where are the triangles
Old 03-27-2011, 08:19 PM
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Originally Posted by theevette
Where are the triangles

See my post above

#44 of this thread
Old 04-21-2011, 12:44 PM
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The hollow valves are discontinued. No more complete ls6 heads. I would say the price will go up on the used true z06 head
Old 04-22-2011, 08:12 AM
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True ls6 heads Do NOT have titanium retainers, I recently swapped valve springs on a set I bought years ago when they were more plentiful. The retainers are exactly the same as all other ls heads....



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