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Throttle body size

This is a discussion on Throttle body size within the External Engine forums, part of the LSx Technical Help Section category; so, the 2002's had the LS6 intakes. i've read somewhere (tho i can't find it anymore) that the TB size ...

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    Throttle body size

    so, the 2002's had the LS6 intakes. i've read somewhere (tho i can't find it anymore) that the TB size is a 70mm, and the LS6 intake can take up to 75mm... anyone have info to confirm/deny this?

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by NetrixTardis View Post
    so, the 2002's had the LS6 intakes. i've read somewhere (tho i can't find it anymore) that the TB size is a 70mm, and the LS6 intake can take up to 75mm... anyone have info to confirm/deny this?
    I'm pretty sure the LS6 is 78mm if I'm not mistaken.

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    Member 89LX's Avatar
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    78mm Fits

    Installed a LS6 on my 2000 and put on a FAST 78mm so it will fit.

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    What is a stock ls1 throttle body size?

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    Quote Originally Posted by 5.0stang View Post
    What is a stock ls1 throttle body size?
    75mm and can port to 78mm.

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    Member SS-Power's Avatar
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    Quote Originally Posted by SSTODD View Post
    75mm and can port to 78mm.

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by SS-Power View Post
    Thanks, I wasn't positive. But isn't the opening in the LS6 intake 78mm, but the stock TB is 75?

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    I have seen that the stock ls1 unported size is 71.5".

    Ported is 75mm.

    I need a confirmation.

    Measure it at it's smallest opening, which I believe is the back.

  10. #10
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    I had a BBK 80MM T/B on my stock LS1 intake. It comes with an adapter plate.

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