maybe a dumb question

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08-28-2008, 09:36 PM

ls7c-10

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maybe a dumb question

I bought a 2007 5.3l the other day and it has 243 cylinder heads on it and i was wondering if i can run an ls3 intake on it just because i like the way they look. thanks in advance

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08-28-2008, 10:03 PM

Haans249

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Use the search.

Quick answer: No.

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08-28-2008, 10:46 PM

ls7c-10

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I found a couple of things when i searched it, is the problem the l92 style ports of the ls3? thanks for the response.

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08-28-2008, 11:36 PM

HSV-GTS-300

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Yes it's the port shape difference.

243 has cathedral ports, L92/LS3 head has rectangular ports.

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08-28-2008, 11:51 PM

Haans249

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Yes, the L92/L76/LS3/LS9 all have the same square rectangular ports. The LS7 and the C5R both have their own different rectangular ports. LS1/LS2/LQ4/LQ9 all have cathedral ports. Did I forget any? haha.

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