[ThaCamaroKid]

Originally Posted by Jeff65SS

The track that the Z/28 performed 3 seconds faster than the ZL1 was GM's test track in Milford.

http://www.camaro5.com/forums/showthread.php?t=286687

That makes it hard to guess as well... Milford is a GM owned proving ground so its not like 458's and GT-R's have been out there. However the ZR1 was good there and it's been good most everywhere else so that might be some good news. a medium track like this is more of what I was expecting not something massive like the Ring