LS7 Valve Issue
Thread Starter
Joined: Sep 2004
Posts: 2,013
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From: Hicksville MN!
LS7 Valve Issue Last edited by Whistler; Jul 16, 2013 at 11:46 AM.
Thread Starter
Joined: Sep 2004
Posts: 2,013
Likes: 85
From: Hicksville MN!
Who the f*ck cares? If having stock valves scares you so much, then change them. Hell, while you're at it change the heads out for a MAST/Brodix/RHS/All-Pro.... you bought a z06, not a pinto.
TECH Enthusiast
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From: Tampa FL
I think what it is now is that people are buying Z06 vettes used now that were never driven hard and tracking them. The issue didn't come up in cars that were just cruised around on the weekends.
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Joined: Jul 2013
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From: Pewaukee
Well I dropped a valve 2 weeks ago on my 2007 z06 and it had 16000 miles on it. Zero mods bone stock. Really glad I spent that kind of mony for nothing. The whole engine is junk. Cracked the block, took out both heads even the intake. Happend on the freeway and snapped the bolts to the flywheel clean off as well. What a POS! GM said its on me to replace it with a full crate motor but it will be discounted to 10,400 . Then labor. .....
Last edited by Norge; Jul 12, 2013 at 09:51 AM. Reason: Forgot something
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Verdad Gallardo Well I dropped a valve 2 weeks ago on my 2007 z06 and it had 16000 miles on it. Zero mods bone stock. Really glad I spent that kind of mony for nothing. The whole engine is junk. Cracked the block, took out both heads even the intake. Happend on the freeway and snapped the bolts to the flywheel clean off as well. What a POS! GM said its on me to replace it with a full crate motor but it will be discounted to 10,400 . Then labor. .....
Thread Starter
Joined: Sep 2004
Posts: 2,013
Likes: 85
From: Hicksville MN!
Last edited by ramairws6; Mar 19, 2017 at 06:11 PM.
TECH Senior Member
Joined: Jul 2009
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Well I dropped a valve 2 weeks ago on my 2007 z06 and it had 16000 miles on it. Zero mods bone stock. Really glad I spent that kind of mony for nothing. The whole engine is junk. Cracked the block, took out both heads even the intake. Happend on the freeway and snapped the bolts to the flywheel clean off as well. What a POS! GM said its on me to replace it with a full crate motor but it will be discounted to 10,400 . Then labor. .....
but Corvetteforum.com is the best corvette forum on the internet (free Google search algorithm bump for the CF sponsors)
I don't understand why this seems to be some kind of gotcha moment catching me in a lie. It's pretty much the same thing I've been saying on the forum for a while, just with the added comment about tuning cars on the limit and finishing them off. This comment was made before GM stated it was a machining issue in the heads. At that time we were searching for answers.
Nobody understands that one person can't know everything.
I use to think the LS7 valve issue was with the addition of an after market cam only, now I believe is an "epic demic" or a demolition syndrome, else the block has at list a couple of sleeves that are trash in every one of them "too thin" and are quick to expose themselves as soon as you add power.
Another issue with GM is, you are on your own if you have any trouble with their high performance crate engines.
Another issue with GM is, you are on your own if you have any trouble with their high performance crate engines.
Registered User
Joined: Jul 2013
Posts: 4
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From: Pewaukee
I did just sign up. It's been 6 years since I owned my 2003 Z06 and was a member. But divorce and life happens. Now as for the other head, I was going at a very good rate of speed and it tore the s... Out of everything. I can see the crank from under the valve cover. I will get some pictures. I believe it's a cement mixer now.
Registered User
Joined: Jul 2013
Posts: 4
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From: Pewaukee
115k miles on my z06 stock exhuast valves. Big cams and dual springs.
