c5 = ls1
c5 zo6 = ls6 very similar to ls1 also 5.7l 346 cid
c6 = ls2 6.0 bigger badder than both the ls1 and ls6
c6 z06 = ls7 427 cid 7.1 baddest chevy engine available in a production car

a c6 z06 will blow the doors off just about any car you can find on the road.....an LPE z06 would make say a lambo/ferrari etc of choice feel slow if you were to drive them 1 after another it would even beat sport bikes on the highway thats how fast that car really is.

as far as 1.7 0-60 on a street you would just roast the tires. However on a track with a good driver its very possible. You always have to remember to that joe shmoe cant just jump in a car like this and cut a 8.xx 1/4 mile thats a professional the average sports car driver i would think is hard pressed to do better than maybe a 10.5.