Help Identify LS6 versus LS2 heads
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Ok these are 243 castings but I am wondering if there is a way to tell the difference between the LS6 version and the LS2 version. Are they springs yellow on the LS2 version or no?
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no way same casting unless you flip it over and it says the year. my heads are 04 castings.
really doesnt matter both are same except for lighter valves. and you can now also find 243 on a GXP
really doesnt matter both are same except for lighter valves. and you can now also find 243 on a GXP
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Originally Posted by MrDude_1
thats a 243 casting... you can tell by the 243 cast into it. lol.
thats whats stock on my 02 LS1
thats whats stock on my 02 LS1
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Originally Posted by 02ZOh6
The LS2 say 243 also. I don't think you can tell the difference that way. I do believe the exhaust ports are different though.
thats because.......
..... they're the same head.
its still a 243 casting. GM is allowed to use the same casting on more then one engine RPO...
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I've been told that LS6 243 heads have D shaped exhaust ports and LS1 (241's) have round ones. I posted a picture of a round port head with 243 casting numbers on it. Looking to see what head it really is.
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Originally Posted by MrDude_1
thats because.......
..... they're the same head.
its still a 243 casting. GM is allowed to use the same casting on more then one engine RPO...![The Jester](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_jest.gif)
..... they're the same head.
its still a 243 casting. GM is allowed to use the same casting on more then one engine RPO...
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http://community.webshots.com/album/552273254iERMPE
there some pictures of my LS2, if that helps at all.
there some pictures of my LS2, if that helps at all.
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Aren't the exhaust ports D shaped on both heads? I mean, they are both 243 castings. I bought some heads off a '05 GTO and they had D shaped exhaust ports from what I could tell. The only difference between the two heads, which has already been mentioned, is the lighter valves on the heads that came off a Z06. Someone correct me if I'm wrong...