Generation III Internal Engine 1997-2006 LS1 | LS6
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Whats the better choice

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Old Dec 20, 2011 | 05:15 PM
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cyipher's Avatar
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From: F' Reno I live in Sparks
Default Whats the better choice

Im looking between the Patriot stage III 2015 vs a set of untouched LS3 heads. The patriots would be ran with a ls6 manifold with a 80mm TB and the ls3 would be with a stock ls3 manifold with a 90mm tb. This is on a Lq9 engine and ive heard about how the 4" bore shrouds the ls3 valve. this will be matched with a MS4 cam with a small hit of nitrous.

What would you do?? I know that the ls3's flow numbers are lower then the patriots but the ability to have them cnc ported in the future is nice.
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Old Dec 21, 2011 | 10:36 AM
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Originally Posted by cyipher
Im looking between the Patriot stage III 2015 vs a set of untouched LS3 heads. The patriots would be ran with a ls6 manifold with a 80mm TB and the ls3 would be with a stock ls3 manifold with a 90mm tb. This is on a Lq9 engine and ive heard about how the 4" bore shrouds the ls3 valve. this will be matched with a MS4 cam with a small hit of nitrous.

What would you do?? I know that the ls3's flow numbers are lower then the patriots but the ability to have them cnc ported in the future is nice.
That is the Q:
I would match parts properly, and definitely fly-cut my pistons. I would choose other heads entirely.
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Old Dec 21, 2011 | 04:45 PM
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get a cam to properly match the air flow % difference between intake and exhaust.a custom cam cost $25 more over a shelf cam.ls3 heads like a different cam profile then other ls heads.
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