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Old 09-29-2007, 10:51 AM
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Default Head numbers
Guys
I have seen many different head numbers like the pic below ,any meaning for that ?

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Old 09-29-2007, 06:25 PM
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yeah its Gm's casting number, denotes which head design it is.
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Old 09-29-2007, 07:34 PM
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what is the best number to have?
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Old 09-29-2007, 07:35 PM
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243 is the prefered. It's the late LS1 Z06 casting.
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Old 09-30-2007, 04:31 AM
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Thanks guys
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Old 09-30-2007, 05:25 AM
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That is a 241 head.
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Old 09-30-2007, 02:58 PM
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Originally Posted by orangeapeel
That is a 241 head.
its look like 261
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