For what it's worth, what changed everything was when I went to the 3.08 1st gear in the Jerico, and 4.30 rear gears. That gave me a much better starting line ratio, and the car basically leaves on its own now. I don't just drop the clutch, but give it a semi-quick release, the front pops up and the car takes off with no drama. Your starting line ratio will probably require you to try and slip the clutch as best you can.
I do remember the launch issues, Doug. My SLR comes out to 13.09. What RPM are you leaving at now? I don't really like slipping the clutch on a launch, more like slipping off the clutch. Pedal.
I'm leaving at 5000, but that's with a 3.78 stroke and not much low end torque. Your engine will probably be different, and maybe leave best below that.
Chris didn't say how many adjustments are in his rear shocks, but the idea is that they will probably need to be tight. I have mine on about the tightest settings that they can be. Still, with no slipper clutch, it's barely hanging on. I think I need to slow my front end rise down a bit, so I'm getting double adjustable front shocks. With no slipper, the clutch still hits hard and I think is causing my front to top out too hard and fast, which still unloads the rear tires. To be honest, I think it would work better on the strip with a softer clutch. The Ram HD has been a great clutch, but it's a very fine line between just the right amount of slip, too much, or dead hook. I think that my SLR is just good enough to get me past that, as is. I still have work to do to get my 60' times down where they need to be though.
Point being, every car is different, so getting a starting point is good, but likely won't be where you end up. I'm sure you're aware of that though, as I'm sure you've done lots of reading on it. There is a good CalTrac thread pinned on YellowBullet which you've probably seen. Good advice to start you off, but it quickly shows that no single setting works for everyone. I have 1/2 turn in the right, 1 turn in the left (the car drifted left just a bit, and the 1/2 turn extra stopped that). 2 full turns to start off seems like a bit much, but if that's what CalTrac recommends? Maybe I should try that....