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gmpp cnc ls9 heads on a L76 block

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Old Feb 20, 2015 | 10:59 AM
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Default gmpp cnc ls9 heads on a L76 block

I have a L76 6.0 with gm flat top pistons and was wandering how the gmpp cnc LS9 cylinder heads would perform with a comp 238/240 605/609 cam with a single plane intake and 750 holley dp carb?. Also what kind of compression ratio do you think i would end up with? Thanks for any info cause Ive been searching for 2 days on here and really havent found a whole lot on this type of combo.
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Old Feb 20, 2015 | 11:10 AM
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Doesn't seem like the right cam for a rectangle port head, but maybe that's left for some cam gurus to say.

They would perform nicely as they are close to ported LS3 heads. Although for that price something seems off. I mean just the Ti intake valves themselves cost as much as the ported LS9 casting offered there.
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Old Feb 20, 2015 | 11:15 AM
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They seem like a good deal to me. I've read pretty much everything I can find on these heads and they sound like a good set of heads to me. What cam would you recommend?
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Old Feb 20, 2015 | 12:27 PM
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Originally Posted by Y2KSS
They seem like a good deal to me. I've read pretty much everything I can find on these heads and they sound like a good set of heads to me. What cam would you recommend?
i assume the heads you have currently are cathederal ports. if you get these heads factor in a rectangular port intake as well.
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Old Feb 20, 2015 | 04:49 PM
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Any more information will be appreciated
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Old Nov 14, 2015 | 06:28 AM
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I have a set of new heads im debating selling, ever finish this?
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