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Generation III Internal Engine 1997-2006 LS1 | LS6
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421 Cu. In. ?

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Old 11-18-2005, 06:33 PM
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Default 421 Cu. In. ?
Has anyone built a 4.030 bore & 4.125 stroke ? What were the results?
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Old 11-20-2005, 12:30 AM
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I'm not 100% sure on the exact specs, but I think that TOSTO is close to that
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Old 11-20-2005, 01:41 AM
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i know 4.03 and 4.1 stroke and it went great. only thing you need is a great head and big healthy cam and it should be fine
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