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What 6.0 heads are on the Hummer?

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Old 06-01-2003, 11:18 PM
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Default What 6.0 heads are on the Hummer?
are they the regular aluminum or the HO head/ What shoudl the castin number be?
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Old 06-01-2003, 11:54 PM
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Default Re: What 6.0 heads are on the Hummer?
Well, the hummer has the 9.4:1 compression ratio motor so it'd be the regular aluminum heads...12562317
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Old 06-02-2003, 12:51 AM
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Default Re: What 6.0 heads are on the Hummer?
there is no HO head you guys need to stop reading magazines
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Old 06-02-2003, 06:39 PM
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Default Re: What 6.0 heads are on the Hummer?
Well, the hummer has the 9.4:1 compression ratio motor so it'd be the regular aluminum heads...12562317
Is that an actual GM part number? gmpartsdirect.com does not list it.

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Old 06-02-2003, 06:42 PM
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Default Re: What 6.0 heads are on the Hummer?
I agree, they get the added compression through different pistons. The heads are the same.
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Old 06-02-2003, 07:35 PM
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Default Re: What 6.0 heads are on the Hummer?
so whats the difference between the 300hp version, vs the 325hp, vs the 345hp??
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Old 06-03-2003, 09:03 AM
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Default Re: What 6.0 heads are on the Hummer?
compression, compression, and compression That'd be my guess anyways.
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