It's been a long time...but my '98 cobra with a vortech s trim ran 11.79 at 120. This was in 1999. It had a stock pulley strim (9 psi), factory manifolds, catted magn X pipe, 4.10 gears, tires were 275/40/17 nitto 555r. Full weight.
The LS1 was dominant during those pre-terminator days....but that s trim really turned the tables. I blasted many unsuspecting fbods and vettes back then haha