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Old Jan 14, 2012 | 05:42 PM
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my car currently has a ls2 and im building a 416 ls3 i already have a fast 102mm i would like to keep running it what would be the best cathdral port heads to run on that motor im really looking to get the most hp out the car all motor i can then add nitrous later
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Old Jan 14, 2012 | 06:19 PM
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I would sell the intake and get one for an LS3, then use CNC LS3 heads.

By the time you buy good LS2 heads, you could have the LS3 combo.

Just my opinion.
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Old Jan 14, 2012 | 06:21 PM
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i do already have a ls3 intake but no heads if i could get a little more power out of the fast setup i was ganna go that way
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Old Jan 14, 2012 | 06:39 PM
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Originally Posted by pkriner
i do already have a ls3 intake but no heads if i could get a little more power out of the fast setup i was ganna go that way
I put LS3 heads, FAST intake and cam on my LS2 and got 508 at wheels.

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Old Jan 14, 2012 | 09:07 PM
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I paid about $1000 and got my stock LS2 heads CNC'd and made 485 rwhp with a moderate cam and FAST. There are several guys making 500+ rwhp with ported LS2 heads.
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Old Jan 15, 2012 | 05:45 AM
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LS3 heads will flow a lot better over LS2's. Try looking into some PRC LS3, flowing 368 cfm at .650. PRC 250cc, perfect for a stroker application, or a nice maxx effort ls3.
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Old Jan 15, 2012 | 02:21 PM
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Its not just about the head flow number, its shape and design of the ports as well.
We offer an HKE ported OEM head that has been proven to make substantial power with small to moderate sized cams. LS3 heads flow good from the factory is their selling point. But power and its characteristics are more than just a head that puts up a good number on a flow bench..
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