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GMPP CNC LS6 head flow numbers

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Old 12-21-2005, 09:29 AM
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Default GMPP CNC LS6 head flow numbers

Either I'm using the wrong search terms or they aren't posted, but I can't seem to find any info on flow numbers for these heads. Anybody have any numbers for these. FWIW, mine are the 65cc heads if it matters.

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Old 12-21-2005, 10:11 AM
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I have the numbers at home but if you call Ed at LPE I am sure he will give them to you. I have these heads and the GT2-3 cam going to be installed in a few weeks. How do you like the cam? The combo I am told is strong.
Old 12-21-2005, 10:40 AM
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Old 12-21-2005, 10:48 AM
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Wow...why don't I see more people using these? Those aren't bad #'s at all...
Old 12-21-2005, 10:51 AM
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Originally Posted by George V
I have the numbers at home but if you call Ed at LPE I am sure he will give them to you. I have these heads and the GT2-3 cam going to be installed in a few weeks. How do you like the cam? The combo I am told is strong.
I'm hopefully going to do the swap within the next couple of weeks and then get retuned.

Cam is great baby cam. Drives great and makes decent power.

Looking forward to hearing your results also.
Old 12-21-2005, 10:51 AM
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Originally Posted by TAF Motorsports
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Old 12-21-2005, 04:57 PM
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Originally Posted by BlackHawk T/A
Wow...why don't I see more people using these? Those aren't bad #'s at all...
that's what i thought as well.from the few dyno sheets i've seen,they seem to perform very well.the intake ports are pretty large,around 250cc i think.this might turn some people off,but it doesn't seem to hurt low end power.
Old 12-21-2005, 05:06 PM
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For the price, I'd rather get two CNC ported LS6 heads from Livernois or Patriot (yes, Patriot now sells true LS6 castings, I'm not talking about the welded LQ9 heads) for the price of one GMPP LS6 CNC head.
The GMPP continues to be a great head option nevertheless. You also get the lightweight sodium filled valves as part of the package.
Old 12-26-2005, 03:39 PM
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I Have The Shaved 55 Thous. 60 Cc Version Not Installed Yet Though Im Also Wondering Flow Numbers. Are They The Same As The 65 Cc Or Better,also Wondering What Size Valve Reliefs On Pistons To Clear A 246 250 Dur. 627 633 Lift Fms Cam +3 Adv. For A Lme 408 45 Cometic Gaskets. Iknow The Heads Are Going To Choke It Up A Bit But I Bought The Heads 2 Years Ago ,pistons Are Wiseco 8cc Re-worked A Bit To Get Approx. 11/2 Compression, Does That Sound Right,will That Work.




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