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do heads really add that much power?

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Old Aug 3, 2004 | 08:52 PM
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un4giv3n's Avatar
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Default do heads really add that much power?
http://cgi.ebay.com/ebaymotors/ws/eB...category=33617

the guy claims heads from a hummer with a stage 1 port job can add upwards of 70hp to an ls1/ls6... is this true?
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Old Aug 3, 2004 | 09:05 PM
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At the rear wheels?
NFW
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Old Aug 3, 2004 | 10:12 PM
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the HUMMER has a 6.0 ltr.....


NFW is right!!!!


not even the AFR will add 70hp.
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Old Aug 4, 2004 | 03:52 PM
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Tell that guy to give himself a hummer.
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Old Aug 4, 2004 | 04:49 PM
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Originally Posted by Ragtop 99
At the rear wheels?
NFW
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Old Aug 4, 2004 | 07:20 PM
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Originally Posted by M6HuggerSS
the HUMMER has a 6.0 ltr.....


NFW is right!!!!


not even the AFR will add 70hp.
I'd have to say wait and see on the AFR's. 468rwhp with a 224/222 cam aint too shabby.
https://ls1tech.com/forums/showthrea...hlight=afr+205
but on the above mentioned heads...NOT!
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Old Aug 4, 2004 | 07:43 PM
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Is it worth money compare to hp that i gain?
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Old Aug 4, 2004 | 08:26 PM
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Originally Posted by z-ya
Tell that guy to give himself a hummer.
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