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New 3 valve heads!

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Old Jan 12, 2004 | 08:03 AM
  #1  
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Default New 3 valve heads!

http://www.corvettec5.comC6/GenIVHeads-1-sm.jpg :party:


[Modified by Matt Gruber, 8:06 AM 1/12/2004]
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Old Jan 13, 2004 | 03:15 AM
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Default Re: New 3 valve heads! (Matt Gruber)

:cool:
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Old Jan 13, 2004 | 11:07 AM
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Default Re: New 3 valve heads! (Matt Gruber)

I'm pretty sure that's the same company that has made the 4 valve push rod heads.

They are just so expensive that they are hard to justify.
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Old Jan 13, 2004 | 01:41 PM
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Default Re: New 3 valve heads! (gkull)

Aren't these the ones GM is working on for the new Z06 replacement version of the C6?
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Old Jan 13, 2004 | 05:40 PM
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Default Re: New 3 valve heads! (MarkBychowski)

here's another pic:





[Modified by Twin_Turbo, 5:19 PM 1/13/2004]
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Old Jan 23, 2004 | 10:09 PM
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Default Re: New 3 valve heads! (Matt Gruber)

you will see these on the trucks before the corvettes but the corvette will get them. ford already has 3 valve heads on their 04 trucks so chevy is playing catchup. this setup with a short pushrod to operate the exhaust valve was used on a 1939 BMW :chevy
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Old Jan 28, 2004 | 08:34 PM
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Default Re: New 3 valve heads! (clem zahrobsky)

Didn't 427 SOHCs use a short pushrod as well?
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Old Feb 5, 2004 | 04:40 PM
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Default Re: New 3 valve heads! (64_365)

So do Alfa V-6's.
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Old Feb 12, 2004 | 02:30 AM
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Default Re: New 3 valve heads! (64_365)

Didn't 427 SOHCs use a short pushrod as well?
NO! they used direct actuated roller rocker arms that limited maximum lift to below 0.700" (I think the Crane "Nitro 660" cams were some of the biggest Cammer grinds ever made (0.660" lift.) I am also looking at the intake manifold on this LS? NO WAY will it fit under a Vette hood! Must be a truck engine.


[Modified by Solid LT1, 11:32 PM 2/11/2004]
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Old Feb 13, 2004 | 01:53 AM
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Default Re: New 3 valve heads! (Solid LT1)

Motor Trend was claiming this month that the 3 vavle would end up in the Z06. FWIW
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Old Feb 13, 2004 | 02:04 AM
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Default Re: New 3 valve heads! (Matt Gruber)

What´s the big deal about 3 valve heads? Check this out:

http://www.speedoptions.com/articles/2327/

Pretty cool, I think!
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Old Feb 14, 2004 | 03:49 PM
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Default Re: New 3 valve heads! (clem zahrobsky)

I think it looks prone to failure...It looks like it belongs on a 39 bmw.This is 04, Im sure someone can do a better job than that.I guess it will work for a retro fit ...but why bother.I doubt you can rev it very high. But hey least someones is thinkin huh :crazy: That exhaust pushrod is what realy looks stuck in there
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