brand new set of complete ls6 heads for sale
11-09-2005, 09:07 PM
#3
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I bought these from a guy ebay a while ago anticipating a heads/cam swap and just bought a boat. Selling everything that is laying around. I am not sure what the combustion size is, it is whatever the stock combustion size was for ls6 heads. I will get some pics up soon. I am not sure which #'s are important, so I will post all I see. On the outside, 243 is cast. Inside the heads, GM 1256 4243 D. Stamped on the face of the exhaust ports is 5223AK 685063.
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11-10-2005, 10:28 PM
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Guys, I am not sure if they are lightweight valves or not. How do you tell? I listed the casting #'s from the heads. I am sure that someone can decifer the #s to tell what year these are from.
