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Head marking question

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Old Dec 12, 2006 | 03:23 PM
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Default Head marking question

I bought a set of heads off ebay that were reported to be Chevrolet LS1 stock heads. The markings on the heads read E287 908 E147 908. I am unsure if I have gotten the real deal or not. Can anyone please help if these markings make sense.

Thanks,
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Old Dec 12, 2006 | 05:03 PM
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Is there a casting number on the outside up near the right front corner when looking at the exhaust side of the head?

Also, one givaway is the cathedral intake port.
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Old Dec 12, 2006 | 05:24 PM
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Originally Posted by vettenuts
Is there a casting number on the outside up near the right front corner when looking at the exhaust side of the head?

Also, one givaway is the cathedral intake port.
"241" castings on the head indicate stock LS1 heads.
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Old Dec 12, 2006 | 07:14 PM
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there is alot more casting numbers than 241. you got 941, 853, 243, 339, 806, 941.
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Old Dec 12, 2006 | 07:51 PM
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If you need a photo I can take one, I have a set of heads on my bench right now I am rebuilding. Also, if you look at the advertisements for LS1 heads, you will see the unique shape of the cathedral intake port.
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Old Dec 12, 2006 | 07:57 PM
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Originally Posted by TYSON1997
there is alot more casting numbers than 241. you got 941, 853, 243, 339, 806, 941.
He said that he had "LS1" heads. The other numbers go to the whole LSx series of heads, but they are for LS6, LQ9 ect etc.
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Old Dec 13, 2006 | 09:52 AM
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243 is ls-6, 339 I believe are lq-9, But 941,853,806,241 are ls1.
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