I know that a lot of people fall for the misconception that your car should squat during launch. I found a good read for those wanting more info on how suspension should work. My setup is cheap but works well, I believe because I have the rear suspension set tight by using FRPP 'C' Springs and bullitt shocks. Some people choose to use an airbag, I've never needed it because my car doesn't squat. Here's a small paragraph of the article...

However, this arrangement – especially with the shorter bars common today – also tends to force the rear wheels and axle up, compressing the springs, which allows the rear of the body to drop. This condition is known as rear squat. Although it looks like you are transferring more weight to the rear tyres and increasing traction, you are actually lifting the rear tyres, and decreasing traction.

Here's the rest http://www.raceglides.com.au/TechInfo.htm

 

Cool. A little confusing, but a good read.

 

i got to send this to my buddy. i was trying to explain to him why a car with an open diff spins the right wheel when launching, but i guess it was kinda confusing without diagrams [&:]