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Generation III Internal Engine 1997-2006 LS1 | LS6
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LS7 heads on LS1

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Old 03-15-2006, 12:11 AM
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Default LS7 heads on LS1
i came across a good deal on some LS7 heads, will they make a big different on my LS1, are they worth it? or what does everyone suggest
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Old 03-15-2006, 12:35 AM
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ls1 bore is 3.90; you need a 4.125 to use them
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Old 03-15-2006, 01:56 AM
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Over kill on your motor. Your motor can not pull enuff air to take advantage of the ls7 heads. IMO buy the heads and have a motor built to back them up.
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Old 03-15-2006, 12:44 PM
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Originally Posted by deadmanTA
ls1 bore is 3.90; you need a 4.125 to use them
Deadmans right, the LS1 bore is not large enough to support LS7 heads. They would make it breath really well though, if they would've fit.
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Old 03-15-2006, 01:19 PM
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What about on a 6.0?

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Old 03-15-2006, 02:18 PM
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Originally Posted by Zick
What about on a 6.0?

Nope, still only a 4.000 bore. I believe they need 4.065 for the valves to even fit, and 4.125 to unshrowd them.
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Old 03-15-2006, 02:27 PM
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Meh, oh well. Probably too costly right now anyways.

Thx
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