the z06 auto is in the high 2s under right conditions, manual will depend on driver but even a novice manual driver can pull out a 3.3 as you will really only shift 2 gears, the standard 6.2L n/a corvette engine does 0-60 in sub 4 seconds, also this depends on altitude, temperature, etc etc.
I have driven a wide variety of performance cars, once you get a relative idea for hp and weight it’s not hard to calculate rough 0-60s, but I know the corvette numbers by heart because my dad is a big corvette guy and bought the stingray then the z06(c6 and c7) and now the zr1(c6 and c7) (its truly one of the only cars he buys because the leases are sh1t) amazing cars to drive but I’m sure being a former corvette owner you get it.