It took me 4 years to figure out how to launch effectively, and I read everything I could about launching. You just have to get a feel for it. I finally watched someone who knew how to launch and the light bulb went on for me.
I used to come out about 4K rpm and dump the clutch, then try to feather the throttle to keep the wheels from spinning and hopping, but that doesn't get you low 60 ft times. Now I come out north of 5K rpm and slip the clutch a little for the first 10 ft or so, and I get consistent low 1.7X 60 ft times and a 1.6X every now and then. It's easier on your drive line when you don't "shock it" and you will get better 60 ft times than just side stepping the clutch. Slower clutch release at first will result in a quicker launch over all. Think about starting out slow and ending up quick.
If you don't think that works, ask (Mike) AZZ061. He was getting 1.9 60 fts just like the rest of us, until I explained this technique to him. Now he gets consistent 1.7X 60 fts too.
Slipping it is hard on your clutch though, so you have to do long cool down times between runs if you're stock, or pony up for a Textralia, add a clutch bleeder and bleed it after every track day and add fresh fluid. If you like to drag race and plan on doing that a lot with your Z, then you might just as well build it for the track before it breaks.
