Yes, as z06Nut said, did the dealer fill the tank? Sometimes they (probably most) fill the tank with 87 octane and you may hear some engine ping on hot days when lugging the engine at low rpms. Mine did this and I think it is even more noticeable because we are trying to do a easy gradual break in. Once filled with some 93 octane the ping under load went away. As z06Nut said though, these engines do make some noise. You will learn to love it as break in nears a close and rpms go up. 
 Wally
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RIP Ken King
2002 TR/BLK Z06 CAGS defeat, Custom cut 3m ScotchCal film paint protection, Hurst, VetteEssentials, AntiVenom shift mod, Andys Partition, Stingers, Polished OEM wheels, Lots of Zaino.
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