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Old 01-19-2014, 05:17 PM   #18
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AFM cam and lifters for better gas mileage! NOT
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Old 01-19-2014, 05:22 PM   #19
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Is this still a problem with the LS7?

I sold my C6 Z06 because of this issue being a possibility.
what year was your Z06?
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Old 01-19-2014, 05:27 PM   #20
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what year was your Z06?
2006

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Old 01-19-2014, 05:33 PM   #21
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Yes there was an update but I've heard mixed answers as to whether it 100% addressed the problem.
What was the update?
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Old 01-19-2014, 05:38 PM   #22
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Some of the 1st mods
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Old 01-19-2014, 06:31 PM   #23
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2006

funny they said the 2006 did not have that.
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Old 01-19-2014, 06:36 PM   #24
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Originally Posted by SSTG View Post
Is this still a problem with the LS7?

I sold my C6 Z06 because of this issue being a possibility.
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Originally Posted by Bhobbs View Post
I have no idea. I know GM finally copped to it being an issue but I never heard if there was an update to the heads to fix it.
The issue was with the 07-08 and early 09 LS7s.

To my knowledge it has been corrected and no further head issues have arisen. But we have a 2013 Corvette 427 with the LS7 so the head issue has been monitored ever since we bought the car in 2012.
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Old 01-19-2014, 07:35 PM   #25
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funny they said the 2006 did not have that.
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Originally Posted by Blue10CamaroSS View Post
The issue was with the 07-08 and early 09 LS7s.

To my knowledge it has been corrected and no further head issues have arisen. But we have a 2013 Corvette 427 with the LS7 so the head issue has been monitored ever since we bought the car in 2012.
06' had the two piece Valves also that had the issue. 09' is when GM revised the valves, BUT I read were they also were having issues.
07 had another issue on top of the valve issue but I can't remember what it was as I didn't own an 07' and didn't worry about it.
I could have had the heads rebuilt and not have to worry but felt it was best to get away from it all together as they are a $15,000 engine.
I made my decision before GM admitted the issues with the heads.
My thought was this, who would pay $50-60 thousand for a known $15,000 engine that likely would blow?
I sold my Z for more than I paid for it.
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Old 01-20-2014, 04:14 PM   #26
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There are issues with 2010-2013 LS7 heads as well. No official fix. Just go on corvetteforum.com and see for yourself.
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Old 01-20-2014, 05:00 PM   #27
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Some of the 1st mods
Post of the year!!
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Old 01-21-2014, 04:16 PM   #28
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Got the price to repaint the car not that bad at $5k.
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Old 01-21-2014, 06:29 PM   #29
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Some of the 1st mods
LOVE IT!
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Old 01-22-2014, 09:09 AM   #30
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Originally Posted by brt3 View Post
STAGE ONE:
• Roll-bar or roll-cage
• Harness bar & harnesses
• Extra set of wheels/tires for street use
• Remove rear seat and install "parcel shelf" for hauling gear to track

STAGE TWO: [if I drive it and decide "I gotta fever and the only prescription is... more cowbell!!"]
• Katech engine mods
• Pfadt suspension mod
Perhaps go straight to the Z/28.R and skip these stages altogether?

...and then affix the Nurburgring sticker at the back!
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Old 02-08-2014, 09:27 AM   #31
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Mod number 1 ...... tow hook.

Mod number 2 ...... CCW wheels and tires for the track.
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Old 02-08-2014, 06:58 PM   #32
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For me the first thing is better cold air intake headers intake manifold in a second set of rims for street tires.
The Z28 will come with short headers and how do we know if there is a Better CAI?
Only one I will do, that would be the Hurst shifter, they look better.
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Old 02-08-2014, 11:33 PM   #33
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The Z28 will come with short headers and how do we know if there is a Better CAI?
Only one I will do, that would be the Hurst shifter, they look better.
We know let me say that, K and N is not the best out there.
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Old 02-09-2014, 04:53 PM   #34
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Looking at it, looks like just the filter is K&N so the rest may be GM.
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