Quote:
Originally Posted by Z51JEFF
Mainly from what Ive read its the first few years of the C6 Z06.In the beginning G.M. wouldnt cover the repair for damage.
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They still have not admitted the problem. But i can tell you I have seen 7,8,9,10,11 cars with less that 30k miles with dropped valves. It was not only the early motors. My heads came off at 3k miles and were cnc'd by advanced induction. They replaced the valve guides at the same time.
If you drop a valve on the 7L, the block is toast....get ya pocketbook out! In the end you will have the baddest boat anchor on the lake!
Chevrolet had a similar issue with the c5 z06 2002-2004 valve springs. I broke one on the yellow 02 z06 48k miles...was lucky didnt drop a valve. The broken spring was taken to stork-labs for failure analysis.....guess what? It was brittle from being in the fire too long! Replaced the springs and she was tach twisting once again.
The red 02 z06 had the springs replaced @ 36k never had an issue with the factory springs.
I like the C5 better than the C6 z06 vs. z06. Put a vortec on the LS6 and hold the heck on, cause you will be hard pressed to find another street car keep up!