Several months ago, mine ran an 8.27 @ 88.7mph in the 1/8th with a base (very conservative) tune. This was with no weight reduction, pump gas, and stock converter.
Honestly, the associated parts will determine how much power you will make. Things like an intercooler, headers/exhaust, fuel system, and your tune. Mid to low 13's is normal for these bricks with a Vortech, but some have gone high/mid 11's with boost and/or spray and bolt-ons.