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LS1 LS2 intake swap

This is a discussion on LS1 LS2 intake swap within the General Help forums, part of the LSx Technical Help Section category; I was just wondering if the LS2 intake could be put on an LS1 motor? if it does work does ...

  1. #1
    Junior Member silver99ss's Avatar
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    LS1 LS2 intake swap

    I was just wondering if the LS2 intake could be put on an LS1 motor? if it does work does it require any modification and where can I get a throttle body to fit it?

  2. #2
    Senior Member mrr23's Avatar
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    yes it will fit. you will need a 90mm TB. from what i've seen, people that have done it, got less than stellar performance over a FAST 90mm intake.

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    Junior Member silver99ss's Avatar
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    will the FAST 90mm TB for the ls1 bolt right on

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    Senior Member mrr23's Avatar
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    not completely sure.

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    the 90mm fast intake will bolt right on. the only problem is that there is some rewiring required for the ls2 throttle body. i am in the process of doing this on my 2000 C5, but for some reason im throwing codes related to the throttle by wire....ill keep you posted....

  6. #6
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    i heard the LS6 and the LS2 intakes put down the same numbers

  7. #7
    Veteran 0rion's Avatar
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    I'll have to dig through back issues but a mag I had did a dyno comparison and if I remember correctly the LS6 intake outperformed the LS2.

  8. #8
    SUPREME member-oderator oneBADDz's Avatar
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    Quote Originally Posted by 0rion View Post
    I'll have to dig through back issues but a mag I had did a dyno comparison and if I remember correctly the LS6 intake outperformed the LS2.
    I've heard the same. I'd say the work probably isn't worth the payoff regardless.

  9. #9
    Senior Member ninobrn99's Avatar
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    Yes, the ls2 intake can be put on, but the injector sizes are different. Typical LS1 injectors wont fit in the ls2 manifold. Also, on the ls2 vehicles, the wiring harness is different for the injectors. You will notice better performance from an ls6 than with the ls2 intake. If you want a 90mm setup and noticeable gains, then you're gonna have to pay to play and get the FAST setup.
    Nino

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