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Old Sep 25, 2018 | 03:22 AM
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Smile Head questions

Why are people installing the 6.2 823 heads on their 6.0 and 5.7 LS engines.? I mean I know about the 243/799 heads, what advantage does these heads have?
Don't beat me up over this, just been out of the scene for awhile.
Thanks,
SKI
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Old Sep 25, 2018 | 04:32 AM
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They flow better, but they're not gonna drop right in because they're square port heads, need a different intake and everything else that comes with that.
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Old Sep 26, 2018 | 04:47 AM
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Originally Posted by 8.Lug
They flo w better, but they're not gonna drop right in because they're square port heads, need a different intake and everything else that comes with that.
what is the gain on using these heads hp wise?
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Old Oct 4, 2018 | 09:07 AM
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Zero. not on a 5.7. they don't fit lol … but on a 6.0 they do. I don't like them on a small bore like a 6.0. intake valve shrouding
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Old Oct 6, 2018 | 02:29 PM
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I thought it was decided that the 706 heads were the swap go to:

http://www.superchevy.com/how-to/eng...der-head-test/

-KP
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