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Some 01-02 fbodies came with a ls6 block

This is a discussion on Some 01-02 fbodies came with a ls6 block within the Firebird / WS6 forums, part of the Vehicle Specific category; in another website I read that some 01-02 fbodies came with a ls6 block from factory. has anyone else heard ...

  1. #1
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    Midnight Blue Metallic
    2001 Trans Am WS6

    Some 01-02 fbodies came with a ls6 block

    in another website I read that some 01-02 fbodies came with a ls6 block from factory. has anyone else heard this before or even confirm this? they say the difference you can tell is the ls6 block is duller in color than the ls1 block.

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    Senior Member Z28Thunder's Avatar
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    Some did come with the LS6 block but it had LS1 internals. You can tell by the number stamped on the block. The color part is just talk..

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    Slow'er'Ass Mr. Luos's Avatar
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    It is legit.

    10% (roughly) from 2001 had the LS6 block.
    25% (roughly) from 2002 had it.

    Doesn't really matter that much...unless you plan on modding like freaking nuts.

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    Midnight Blue Metallic
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    Quote Originally Posted by Z28Thunder View Post
    Some did come with the LS6 block but it had LS1 internals. You can tell by the number stamped on the block. The color part is just talk..
    where would it be stamped? I am just curious

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    Midnight Blue Metallic
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    Quote Originally Posted by Mr. Luos View Post
    It is legit.

    10% (roughly) from 2001 had the LS6 block.
    25% (roughly) from 2002 had it.

    Doesn't really matter that much...unless you plan on modding like freaking nuts.
    would you think it could add value to your car if you were the select few to have it? being more rare than others

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    Midnight Blue Metallic
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    I forgot to ask too what number is for what block?

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by mangus2k1ws6 View Post
    would you think it could add value to your car if you were the select few to have it? being more rare than others
    Nope.

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    Senior Member justinmc978's Avatar
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    Quote Originally Posted by mangus2k1ws6 View Post
    would you think it could add value to your car if you were the select few to have it? being more rare than others
    lol no. only a sleezy car salesman would try to get an extra buck by saying something stupid like that

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    Senior Member Z28Thunder's Avatar
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    Quote Originally Posted by mangus2k1ws6 View Post
    where would it be stamped? I am just curious
    There is a number on top of the block behind the driver side head. It's quite difficult to see -- you'll need a telescoping mirror and a flashlight. I think the LS6 block number is 12561168.

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    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
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    if i remember correctly the LS1 blocks have a bullseye by the coolant crossover tubes and the LS6s do not
    Easiest way to tell as far as i'm concerned

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    Quote Originally Posted by justinmc978 View Post
    lol no. only a sleezy car salesman would try to get an extra buck by saying something stupid like that
    true.... i thought it would be cool to be one of the select few to have it

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    Midnight Blue Metallic
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    Quote Originally Posted by Z28Thunder View Post
    There is a number on top of the block behind the driver side head. It's quite difficult to see -- you'll need a telescoping mirror and a flashlight. I think the LS6 block number is 12561168.
    that's dumb. maybe when I do a head and cam job on it, I could have a better chance seeing or is there another way find out by vin#?

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    Senior Member justinmc978's Avatar
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    Quote Originally Posted by mangus2k1ws6 View Post
    that's dumb. maybe when I do a head and cam job on it, I could have a better chance seeing or is there another way find out by vin#?
    no. only other way is to look at it side by side to an LS1 block, LS6 blocks have a slightly darker cast than LS1s.

  14. #14
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    Midnight Blue Metallic
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    Quote Originally Posted by justinmc978 View Post
    no. only other way is to look at it side by side to an LS1 block, LS6 blocks have a slightly darker cast than LS1s.
    above they said that isn't true. I did look at mine and my block is pretty dull in color but I never compared it to another beside it

  15. #15
    Senior Member justinmc978's Avatar
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    sold: 1999 firebird
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    Quote Originally Posted by mangus2k1ws6 View Post
    above they said that isn't true. I did look at mine and my block is pretty dull in color but I never compared it to another beside it
    it is most certainly true, ls1 and ls6 blocks were cast in different plants (IIRC, one in the States/Canada and one in Mexico) this resulted in a noticeably different cast.

    edit: here is a pic and a website resource:

    LS6 on the left and LS1 on the right. note the significant color difference.

    http://www.vetteweb.com/features/vem.../photo_05.html
    Last edited by justinmc978; 09-13-2010 at 03:45 PM.

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    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
    2001 Camaro SS

    Does anyone listen?
    Does your block have this little bullseye on it? i think there are like 4 on the front
    Hard to see but only pic i got that shows it


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    Moderator Cutlass's Avatar
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  18. #18
    Senior Member bluehawk2000's Avatar
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    midnight blue
    2000 trans am

    the ls6 has more cooling ports to correct.

  19. #19
    Member dragonchick's Avatar
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    Quote Originally Posted by tatertot91 View Post
    Does anyone listen?
    Does your block have this little bullseye on it? i think there are like 4 on the front
    Hard to see but only pic i got that shows it

    Click for full size
    Yep, the bullseye is true. mine has the bullseye, so therefore LS1 block. A friend of mine also has an '01 T/A, but his don't have the bullseye, therefore LS6 block He was actually the one who showed me that

  20. #20
    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
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    At least one person listened lol
    easiest way to tell
    Last edited by tatertot91; 09-13-2010 at 06:25 PM.

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