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  1. 04-18-2008, 12:57 PM #1
    99transamC/FIA
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    casting #'s for different year ls1-6 stuff

    Dose anyone know where i can get a listing with all the different casting #'S for the different year blocks, heads,and intake.
    I'm a class racer and classification of the car depends on casting #'s. currently running a 99 trans am but considering move to 2002 depending on HP improvment.
    I thought i saw a complete listing on here but cant seem to find it.
    Any help would be great
    Thanks
    Dave
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  2. 04-20-2008, 12:16 AM #2
    kev70ss
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    not sure on the blocks but this has a lot of info
    http://www.smokemup.com/tech/ls1.php
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  3. 04-26-2008, 01:38 PM #3
    99transamC/FIA
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    Thaks alot
    not really what i'm looking for but it is still good to have.
    I need a casting # List
    which head is the best? 243?
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  4. 04-26-2008, 09:23 PM #4
    0rion
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    98 Formula
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    you can look at will handzel's book ( amazon has it) as it has quite a few of the casting numbers listed in it. The intakes used a crap load of different casting numbers. I had them at one time and thought I posted them here somewhere. There's quite a few of them. 243's are LS6 heads and are considered the best stock heads.
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