I've read anecdotal statements to the effect that the LS7, in stock form, can't reliably run at redline for very long, e.g. on a track.

Is that correct? And if so, what's the limiting factor? I assume piston speed is the issue, but...what breaks?

 

I doubt many engines are going to be happy just hanging at their maximum speed. The only race motors that stay at maximum rpm for sustained periods are NASCAR plate motors. On a road course you should be moving through the rpm band due to shifting, braking, and so forth.

 

LS7 have ran into a few problems on the road course.

Some guys (ZO6) have starved the engine of oil on real high G turns running slicks. They claim the dry sump oil system didn't keep up. This is only for ZO6s with the factory dry sump in place.

Some guys have had a valve drop as well.

When running a road course set your motor up according to the types of abuse it will be subjected to. But for the average hobbies you should be fine.