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Intake interchangeability

This is a discussion on Intake interchangeability within the External Engine forums, part of the LSx Technical Help Section category; Will the LS2/LS7 intake interchange on the LS1? Are there any horsepower gains with the swap, if they are interchangeable?...

  1. #1
    Member speedkills's Avatar
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    Intake interchangeability

    Will the LS2/LS7 intake interchange on the LS1?

    Are there any horsepower gains with the swap, if they are interchangeable?

  2. #2
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
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    LS6 can, I am 99% sure the LS2 is not a direct bolt on to a LS1

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    Slow'er'Ass Mr. Luos's Avatar
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    LS2 will fit. Needs a larger throttle body or an adaptor for the LS1 throttle body.
    I doubt the LS7 intake fits. Although I am sure someone has made it work.


    LS6 intake > LS2 intake on a stock cubed LS1.
    2008 Trailblazer SS
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    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

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    Senior Member Wheeler99WS6's Avatar
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    LS2 intake is similar to the 90mm Fast intake correct.

  5. #5
    Twin Turbo Terror anarchy99's Avatar
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    yep, similar to the fast intake. to throw an ls2 intake on your ls1 you'll also need the coolant crossover pipe and plugs. I went ahead and changed my rails out at the same time and went to a fast 90 TB.

  6. #6
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by Wheeler99WS6 View Post
    LS2 intake is similar to the 90mm Fast intake correct.
    FAST overperforms it though.

    From what I understand, the LS6 intake outperforms the LS2 intake on a stock cubed LS1. Someone correct that if it is wrong.

  7. #7
    Senior Member mrr23's Avatar
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    from all that i've read, the LS2 underperformed the LS6 intake. the LS7 intake will require the LS7 heads due to the 11* design.

  8. #8
    Member speedkills's Avatar
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    Good information, I really appreciate it. My only other dilema is finding one for a descent price. I'll be damned if I am going to pay $350 or $375 for a used intake. I think that is a Barrett - Jackson price, opening bid.

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