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Cylinder Head Question

This is a discussion on Cylinder Head Question within the Internal Engine forums, part of the LSx Technical Help Section category; The only number I can find on my cylinder heads is 306. Can anyone help me figure what that means. ...

  1. #1
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    1998 Camaro Z28

    Cylinder Head Question

    The only number I can find on my cylinder heads is 306. Can anyone help me figure what that means. I don't know any of the history on this engine.

    1998 Camaro Z28
    Automatic



    EDIT more research shows that it should be a 806 and that is the early ls1 head. If anyone else knows something different let me know.

    Thanks.
    Last edited by Teacher Todd; 07-14-2010 at 04:04 PM.

  2. #2
    Senior Member bills98ta's Avatar
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    Yep... 806 with the perimeter bolt pattern.

  3. #3
    O U 8 1 2 Spaz's Avatar
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    Quote Originally Posted by Teacher Todd View Post
    The only number I can find on my cylinder heads is 306. Can anyone help me figure what that means. I don't know any of the history on this engine.

    1998 Camaro Z28
    Automatic



    EDIT more research shows that it should be a 806 and that is the early ls1 head. If anyone else knows something different let me know.

    Thanks.



    see where it says "243" on my heads??? that is the casting number...

  4. #4
    King 0f n00bz shady milkman's Avatar
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    98' trans am

    best to ask..is the engine modified ? i have not heard of a 306..so i would assume it is a 806 which is stock. the best way to make sure is look at the bolt pattern like bill said.

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