Generation III Internal Engine 1997-2006 LS1 | LS6
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which head is better

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Old Jun 6, 2006 | 10:20 PM
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Default which head is better

PRC LS6 CNC Ported Heads or the PRC LS6 Stage 2.5 CNC Ported Heads?
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Old Jun 6, 2006 | 10:23 PM
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Or. PRC 5.3 2.5 cnc ported heads.
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Old Jun 6, 2006 | 10:23 PM
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Depends on what you are trying to acheive....higher compression?
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Old Jun 6, 2006 | 10:28 PM
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Originally Posted by orangeapeel
Depends on what you are trying to acheive....higher compression?

i just want to know what are the differences between those two heads? what does that 2.5 stand for also?
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Old Jun 6, 2006 | 10:30 PM
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Stage two and a half.
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Old Jun 6, 2006 | 11:45 PM
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Usually the "stages" are an increase valve sizes. What cam are you going to be running??
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Old Jun 7, 2006 | 12:33 AM
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Increased vavle size and a matching vavle job. It'll flow better than the stock vavled stage 1 head but you'll be very limited in cam size with the stock pistons.
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Old Jun 7, 2006 | 11:15 AM
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Originally Posted by orangeapeel
Depends on what you are trying to acheive....higher compression?

whats the advantages of higher compression?
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Old Jun 7, 2006 | 11:27 AM
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Originally Posted by DocEwww
Increased vavle size and a matching vavle job. It'll flow better than the stock vavled stage 1 head but you'll be very limited in cam size with the stock pistons.
i was looking at the g5x3 cam or ms3 cam on a 112lsa. and i was wanting to run the PRC ls6 cnc ported stage 2.5 heads with the 2.04/1.575 valves
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Old Jun 7, 2006 | 04:22 PM
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you will not be able to run bigger than stock valves with the MS3 without flycutting the pistons.
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Old Jun 7, 2006 | 04:41 PM
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Originally Posted by orangeapeel
Stage two and a half.
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Old Jun 7, 2006 | 05:15 PM
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Originally Posted by Rescue Ranger
What?! He asked what it meant!


Anyway, raised compression (static or dynamic) can essentially lead to more power, but along with that comes tighter quench and so forth.
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