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Old Dec 6, 2002 | 12:07 PM
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LT1 Casting numbers

Does anyone know what size the combustion chamber is on stock 93-97 LT1 heads? How about casting numbers?

Last edited by 88 GTA; Dec 6, 2002 at 03:26 PM.
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Old Dec 8, 2002 | 11:33 PM
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LT1 Aluminum 64cc +/- GM Casting quality.

LT1 Iron 68cc +/- GM Casting quality.

LT4 Aluminum 58cc +/- GM Casting quality.
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Old Dec 9, 2002 | 10:35 AM
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Thanks a bunch
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Old Dec 9, 2002 | 01:18 PM
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GhoSSt,

Was that a typo? I'm almost positive I measured my iron LT1 heads at near 58cc before going at them with the grinder. They're all right at 58cc now after the bigger valves ate up some of the area, so I know I didn't start with much more than that. ¿?
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Old Dec 9, 2002 | 03:08 PM
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Ditto - my aluminum F-body castings were 58cc as well.
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