Purchasing 2008 Z06 /Head issues?
Melting Slicks
Joined: Aug 2014
Posts: 2,587
Likes: 873
I had a set of aftermarket heads on my LS1 suffer valve guide failure over time. Nothing unusual in regular oil changes to make you think wear, but rather I suffered oil consumption. Eventually it got so bad to hit 1 qt every 600 miles by the time I did something about it.
If you have a local specialty corvette shop close to you, I'd take it over there to get inspected. It requires pulling the valve covers off and pushing air in each cylinder and inspecting each valve for any unusual movement outside of tolerance or potential signs of scoring indicating some unusual wear.
A service like that should reveal whether the heads are suffering the problem or not and just costs you some labor for the inspection which is some good piece of mind should they catch that the valves are indeed wearing or will be good candidates for failure. Heads can be fixed for far cheaper than a whole engine...
If you have a local specialty corvette shop close to you, I'd take it over there to get inspected. It requires pulling the valve covers off and pushing air in each cylinder and inspecting each valve for any unusual movement outside of tolerance or potential signs of scoring indicating some unusual wear.
A service like that should reveal whether the heads are suffering the problem or not and just costs you some labor for the inspection which is some good piece of mind should they catch that the valves are indeed wearing or will be good candidates for failure. Heads can be fixed for far cheaper than a whole engine...
Last edited by SladeX; May 19, 2019 at 07:51 AM.
Safety Car
Joined: Nov 2000
Posts: 4,772
Likes: 343
From: SIOUX FALLS SD
Cruise-In II Veteran
Cruise-In III Veteran
I do not know lots of people that own a C6 Z-06. One of the owners blew his engine due to the heads and GM fixed it for free under warranty. I think if I were to buy one I would find one with the work already done with receipts to prove it. Otherwise have the work done and pay the $2000.00 and have the piece of mind knowing it will last a long time.
