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Generation III Internal Engine 1997-2006 LS1 | LS6
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Old 06-21-2011, 10:23 PM
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Default LS heads
can anyone list all or most of the different LS head casting number and what they came on?

I have a 98 Z28 but my heads are 241 casting #'s
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Old 06-22-2011, 01:54 AM
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Someone swapped out your stock heads then.

98- 806 heads
99-00 853 heads
00-02 241 heads
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Old 06-22-2011, 03:47 PM
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and if your heads have centerbolt valve covers then someone chganged either heads or the whole engine.
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Old 06-23-2011, 07:24 AM
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I do have center bolt valve covers. How would I identify my engine year?
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