A stone stock 98 Z28 should run 13.5 - 13.8. After a few years a few things may have been bolted on the Z-28 by now, so 13.0 - 13.5 is not out of the question.
I really don't understand the motivation to beat a stock car with a modified car. If both cars were modified and you beat the Camaro it would seem more satisfying to me.
------------------
Frank W
90 5.0 LX coupe Daily driver. Silencer removed, K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch, FMS blue wires Energy Suspension end links
88 Notch 2.3L 5 speed Parts/beater car
My two Notchbacks
74 Chevy Laguna Type S-3 305 Finally fixed getting a 454 to put in garage
<A HREF="http://www.chevellepages.com/folingo" TARGET=_blank>www.chevellepages.