Someone emailed me about this, but not sure which one of ya it was.
I would disagree with 1bad that mid-high 12's is the average. I would say that someone who drives correctly can run a low 12 (12.2) or better, even given a very poorly prepped track that is similar to the street in traction.
I will say that there is *NO WAY* you will run an 11 anything in a Viper unless the track is well prepared. Englishtown is one of the best prepped tracks out there - it has a reputation for that. My first time there I was clicking off 11's all day - and I am no professional driver. I drag raced alot the last couple of years, but before that it was about 7 years ago I was on a track, and only about 3-4 times at that. Come to think about it, I might not have made 100 runs in my life
To answer the question, yes, a well prepared track is a must. Even on a bad track though, 12.2 is doable in a stock car with a good technique.
The most important thing is the launch. Then it is the shifts and keeping the power down. Shifting badly is, in my opinion, worth a good .3 and 3-4mph in the 1/4. It can take a guy running 12.5@115 and put him at 12.2@119. Then, if that same guy gets his launch perfected, he would be running 11's with that MPH.
For a good launch, you need to rev to about 3000-3500RPM, and let the clutch out fairly quick, but easy to get the tires scratching for grip, but not spinning. If you do it right, the car will just *leap* forward and the front will feel like the tires are going to lift off the ground