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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

factory lt1 head milling?

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Old 04-03-2010, 04:57 PM
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Default factory lt1 head milling?
what is the most that can be milled off of a set of factory aluminum lt1 heads?
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Old 04-05-2010, 06:59 PM
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Has anyone milled off .050? Ptv is not an issue.
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Old 04-06-2010, 01:51 AM
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Why would you want to mill off so much? Trying to get a massive compression ratio?
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Old 04-06-2010, 02:53 AM
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I agree, why would you want to mill them that much?

You know milling hurts the flow right....
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Old 04-06-2010, 07:34 PM
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The combustion chambers have been opened up and the valves have been unshrouded. It should flow fine. I just want to get as much compression as possible.
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Old 04-06-2010, 08:32 PM
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i had mine milled .060 and it was fine
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Old 04-07-2010, 12:34 AM
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Not sure exactly how much they were milled but Lloyd Elliott got my old heads down to a 50cc chamber. Good for 12.4 compression on my old motor. On LT1's compression=horsepower.
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Old 04-07-2010, 02:16 AM
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Originally Posted by 86formula
i had mine milled .060 and it was fine
what .060 wow
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