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862 head on 6.0L

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Old 09-06-2010, 04:45 PM
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Default 862 head on 6.0L
I want to go w/ a 6.0L w/ my heads, Does anyone know if a 5.3L 862 Head will properly install on a 6.0L, Iv heard conflicting storys about the head gasket sealing..?
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Old 09-06-2010, 07:21 PM
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they work. I never heard of head gasket problems maybe someone else has... I just used MLS head gaskets for the 6.0 from car-quest. when i had my 862's on an lq4
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Old 09-06-2010, 09:01 PM
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Don't do it...
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Old 09-06-2010, 09:13 PM
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Originally Posted by MPFD
Don't do it...
Elaborate please.
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Old 09-06-2010, 09:22 PM
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862's on a 6 liter are the modern day equivalent of putting 305 heads on a 350, they don't flow. A mullet is required inorder to do this properly...
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Old 09-18-2010, 09:47 PM
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These 862 heads on my 5.3 have been milled 0.30, machined & installed the larger LS1 valves, ported & polished, I think they should flow pretty well.
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Old 09-19-2010, 10:54 AM
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How about the combustion chambers, wouldn't you want to hog them out a little bit to match the 4.0 bore?
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Old 09-19-2010, 02:45 PM
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I wouldn't do it with stock heads, but a worked set is a different story. I am fixing to put a set of PRC's on my LQ9.
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Old 09-19-2010, 02:59 PM
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See this thread: https://www.performancetrucks.net/fo...d.php?t=456408

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Old 09-19-2010, 04:22 PM
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A mullet is required inorder to do this properly...
lmfao, that just made my day.
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