Z06 problems
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Z06 problems Ive got a 2007 Z06. when it was new it had a couple of the problem rocker arms which were replaced under warranty. Now friends with Z06's are indicating concerns about faulty valve guides wearing prematurely. I was under the impression that this wasnt a problem on 2007s. Comments?
It my understanding all heads could be suspect up until 02/12. Were it mine I would get the "wiggle test" done. Doesn't cost that much and very good insurance. Most lose the block when a valve drops.
ALL LS7 have head issue potential up until very late `12, and even then I believe there are a few reports of `13 Z06 and 427s with valve issues. Then for `13 we get a switch to a new issue: bad coatings on the Ti connecting rods causing them to destroy each other and cut off oil pressure. GM just never got the LS7 right compared the other LS series engines.
