LS1TECH - Camaro and Firebird Forum Discussion

Generation III Internal Engine 1997-2006 LS1 | LS6
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243 castings

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Old 09-13-2008, 05:59 PM
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Default 243 castings
is the ls6 the only enigne that uses 243 casting or does the ls2 use them also.
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Old 09-13-2008, 06:05 PM
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They both are the same casting. The same except the valves. The Ls6 casting has hollow intake valves and sodium filled exhaust valves.
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Old 09-13-2008, 06:17 PM
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the new 5.3 and 4.8 trucks have them too 07+
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