Generation III Internal Engine 1997-2006 LS1 | LS6
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head casting info

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Old Mar 20, 2006 | 09:47 PM
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i see all these different heads people are talking about with different casting numbers was just curious as to what all they are........thanks for any info
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Old Mar 21, 2006 | 12:22 AM
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Search and you will find threads about this.
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Old Mar 21, 2006 | 12:52 AM
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805 is the perimeter bolt style pattern and is found on the earliest of LS1's 98'.
853 is on the 99' and some early 00' models.
241 was on the end of the 00' batch and on the 01 and 02 style.
243 is the LS6 style casting.
317 is the 6.0l truck casting.
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Old Mar 21, 2006 | 02:00 AM
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so since i have a 98 does that mean that the 853,241, 243, and 317 will not work or will they?
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Old Mar 21, 2006 | 02:10 AM
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they will work
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Old Mar 21, 2006 | 02:11 AM
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Yeah, they will work. Downside is that you will have to get new coil brackets and valve covers to accommodate the center bolt style that all the other castings have.
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Old Mar 21, 2006 | 02:41 AM
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ahh cool thanks for the info guys
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