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Generation III External Engine
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Modifying Holley's LS1 Intake?
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https://ls1tech.com/forums/generation-iii-external-engine/48810-modifying-holleys-ls1-intake.html
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Gold Phoenix
Sep 15, 2002 05:24 PM
Modifying Holley's LS1 Intake?
Has anyone ported, changed the taper, or shortened the runner length? If so, what kind of gains did you get?
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