I have a set of Brand New 243 casting LS6 heads for sale. They are complete with springs and valve. Please PM me any questions. $800 shipped in the US obo.

 

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What kind of valves and springs in these heads?
Are they ls6 takeoffs or are they the castings filled with something else?

 

Honestly I don't know if the exhaust valves are sodium filled. I do not have a scale that can measure anything that lite.Someone on here said that they believe that the heads might be from the 6.0 GTO. The GTO's utilized LS6 heads but changed the valves.These are brand new. Also at this price,one can replace all the valves on the heads with aftermarket lite weight race valves and still save over $550 from buying these retail from a dealer.