I ran a 14.6 with a stock 2002 LS1 engine with a mild Lingenfelter camshaft. The engine was running really lean at the time too. The long term fuel trims were maxed out and needed more fuel to reach the needed fuel mixture. I ran a EXT cab C1500 fully loaded with a pair of tires and wheels in the bed of the truck during the run, also. You should easily beat my time with proper tuning. I would suggest the Street and Performance A/C mount and Sanden 508 compressor. It's a clean setup.