I know I'm an LLT... but I find I get my best launches by leaving TC on, launching from idle and flashing the converter... works much better than stalling the car up... My last outing I managed a 2.086 60'! That's with the 20" RS tires/wheels and an open diff!
For the unfamiliar with "flashing"
"Flash occurs the instant you release the foot-brake and the rotating inertia (which is "stored" in the engine-flexplate-converter) is released. This flash speed can be anywhere from 500-2500 RPM higher than the foot-brake-stall speed. In a racecar, the typical “flash –the-converter process” usually works like this: Stage at idle, hold the brakes with one foot and "flash" the converter (flooring the gas pedal with the other foot, and simultaneously releasing the foot-brake) the instant the last yellow on the Christmas Tree comes on. The sensation is a form of “slingshot” effect as the car leaves. Some cars work better by flashing the converter. Some combinations work better by outright stalling the converter."
(from
http://www.competitionplus.com/03_25...confusion.html)