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ls1 and ls6

This is a discussion on ls1 and ls6 within the External Engine forums, part of the LSx Technical Help Section category; What is the difference ls1 intake manifold, fuel rail, injectors, and throttle body to the ls6...

  1. #1
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    1998 camaro

    ls1 and ls6

    What is the difference ls1 intake manifold, fuel rail, injectors, and throttle body to the ls6

  2. #2
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    2002 2500HD

    I am not positive on this but I think the LS 6 has a larger throttle body 90mm I maybe wrong won't be the last time I am

  3. #3
    Member C&Cbird's Avatar
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    1998 Trans Am

    The ls2 intake has a 90mm throttle body, the ls1 and ls6 throttle bodies are the same size.

  4. #4
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    LS6 Intake is better flowing than the LS1 Intake...the rails, injectors and throttle bodies are the same...might want to port the TB though, just for smoother air flow.

  5. #5
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    would i get better performance with a bbk intake manifold than a ls6 manifold

  6. #6
    Member importhater81's Avatar
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    02 ss camaro

    Quote Originally Posted by Ls1m6Nichols View Post
    would i get better performance with a bbk intake manifold than a ls6 manifold
    NO! Go with the Ls6.

  7. #7
    Honor-Courage-Commitment SajoR's Avatar
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    navy blue metallic
    2002 Camaro SS

    correct, LS6 intake manifold is pretty much the best flowing manifold we can get for our blocks. You may get a tad bit better flow with other aftermarket manifolds, but not enough for what you are paying for. Check to see if you have an LS6 block, you have about 500 more rpm at redline than the LS1 block. Revised and smoother flowing channels allow the LS6 to free up some more RPMs at redline than the LS1, if i do remember correctly......


    sorry if I'm wrong guys, It is 3 am and i've been drinking lol.......correct me if i'm wrong, PLEASE

  8. #8
    Fast 92mm will out perform the ls6 but is it worth the extra cash on a bolt on motor? Probably not. With a heads/cam setup it would be a different story. Depends on what your looking for and your budget.

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