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Is this an LS1 or LS6 intake?

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Old Jun 27, 2008 | 07:14 PM
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Default Is this an LS1 or LS6 intake?



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Old Jun 27, 2008 | 07:21 PM
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check number in intake
looks like ls6, has flat underside,
ls1 has a valley or belly
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Old Jun 27, 2008 | 07:27 PM
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Looks like a LS6.
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Old Jun 27, 2008 | 07:32 PM
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That's an LS6. If it makes you feel better, check the part number, which I believe is on the driver's side of the manifold.
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Old Jun 27, 2008 | 08:36 PM
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+1 check the part number.

12556333 or 12560688 are LS1

12573572 or 12561184 are LS6

There might be other numbers for each as well.

I think it is an LS6 because of the way the sides are constructed.
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Old Jun 28, 2008 | 06:51 AM
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I saw this picture posted some time ago on this forum. See the attachement for examples of the LS1 intake on the left and LS6 on the right.
Attached Thumbnails Is this an LS1 or LS6 intake?-ls1-intake-left-ls6-intake-right.jpg  
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