I race at 4500 ft. and so far my best ET is 13.56 @ 108.45 MPH. It is frustrating to read about the 06's going in the low 12's to the high 11's when I seem to be altitude handicapped. I still have not been able to perfect an even passable launch as my efforts to "feather" or "slip" the clutch have gone for naught. Our track seems to be more slippery than the street and with a total stock setup and street tires I seem to be relegated to mediocre runs. What is really depressing is this past Saturday I was ready to leave and had filled up my tires with air when I was asked to race another vette. I left anyway when a funny car managed to lose his oil pan at the end of the track. I found out later that a guy in the staging lanes in a silver Z06 there for the first time with the car ran a 13.00 when they reopened the track and had newly prepped the surface. This was this guy's first run although I found out later that he had built and run a dragster before so his driving skills certainly exceeded mine.

I tried different launch RPM 's with my best run at 2500. I crawled off the line once at idle to see if this would make any difference and made the first shift fine only to discover I was @ 6200 RPM right after the shift so I quickly put it into third. That was really bizarre. This run led to a 14 second pass - embarassing. I thought that maybe someone from Chevy was going to come out and take away my keys. My last run causing my decision to go home found myself trying to go sideways in third gear - I mean I was spinning after making the shift and had to back off the throttle to make sure that I did not hit the way. That was after I had removed my air filter in an attempt for a power boost. My driving obviously stinks with my best 60' tome being 2.32. After reading many posts about 1.8's and 1.9's 60 foot times I get really discouraged. I know the altitude is a factor in final ET but when the other guy ran 13 flat I was really done.

Anyone have any ideas on how a slow learner can pick up the trick of slipping the clutch? And any thought what launch RPM street tires can handle at this altitude? You posters have been very helpful so far but obviously I don;t get it. Frustrated...

 

Ive done drag racing with a lot of different cars, though not the z06 yet.

but, I'll venture to guess that the best way to launch the z06s is with some clutch slippage. Dont just pop the clutch, rev the engine up a bit, ,and let the clutch out partially to keep the revs up and wheelspin down.

or, just barely rev it, and dump the clutch and go.

kinda depends on how sticky your dragstrip is.

also, have the rear tires deflated a bit. no higher than 30psi

 

I certainly no pro at all; but with what you are running at the track are you:

1. Deflating the rear tires 25-27 lbs? Will have to "find" the right pressure to hook up at your track...it will vary.
2. In "CD" Mode
3. Windows up?
4. Quality Gas?

Just some misc. thoughts - hope they help. Good luck.