I don't know exactly what you guys call "dumping" the clutch, but if you literally let it come up as fast as it can that can't be too good for your times as you'll either get lots of wheel spin or bog the engine down. In my opinion it's best to keep rpms around 2000 while quickly but gradually releasing the clutch and as soon as the clutch is fully engaged floor the gas. At least that works on my Firebird. In the Z06 you might get too much wheel spin even after the clutch is out.
As far as 0-60 times go Motor Trend, whose numbers I trust the most among all mags, got 4.3. Even the incompetent drivers of R&T got 4.6 so 4.7 would really be ridiculous.
As far as 0-60 times go Motor Trend, whose numbers I trust the most among all mags, got 4.3. Even the incompetent drivers of R&T got 4.6 so 4.7 would really be ridiculous.