How many of you drag your Z? - Page 2 - ZR-1 Net Registry Forums

Aurora40 · 08-25-2005

what does "5500 DA" mean? What was the air temperature? I'd think 3,000' plays a bit of a part. 104mph isn't too bad especially if the atmosphere wasn't good. I'm guessing the 4.09 gears don't help improve your trap, just ET.

Also, two runs isn't that many unless you are good at it already. I ran around 13.6-13.4 for the first few runs I made on my one trip to the track. It wasn't until my last run (of about 6-8 runs) that I hit a 13.2. I imagine if I'd kept running I probably could have done better than that also.

08-25-2005

Quote:

Originally Posted by Aurora40

what does "5500 DA" mean?

Density Altitude
Originally developed from formulas used by aircraft pilots to calculate lift, this relative performance altitude when calculated for racing includes additional compensation for the effects of humidity on engine performance.

cuisinartvette · 08-25-2005

First run I left at about 2000;second one about 1500-Didn't slip it bad, nor dump it-Maybe I expect too much. I'm going to try another track when it cools off, see how it goes. Yes, more seat time should help, too. First run made some respectable shifts-Didn't want to miss at 7000 rpm;second run I hit all gears perfectly short of speedshifting. It was a blast, though I have to admit!

i didnt' get the air temp;Guessing around 80ish-I noticed 1/2 hour after leaving the track it cooled off outside and my readut said 77

cuisinartvette · 08-28-2005

For the member that was curious to how it ran, here's the poop...

ShawnZR-1 · 08-28-2005

I've dragged my Z about 10 times now just for the fun of it. The absolute best I've ever done is 12.96@111MPH. That was at Beach Bend too!

My 60's are abismal, 2.2+ but that is on street tires. I can dial in a 13.2 and be damn sure I'd hit that all day long without breaking out.

08-25-2005	#11
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	what does "5500 DA" mean? What was the air temperature? I'd think 3,000' plays a bit of a part. 104mph isn't too bad especially if the atmosphere wasn't good. I'm guessing the 4.09 gears don't help improve your trap, just ET. Also, two runs isn't that many unless you are good at it already. I ran around 13.6-13.4 for the first few runs I made on my one trip to the track. It wasn't until my last run (of about 6-8 runs) that I hit a 13.2. I imagine if I'd kept running I probably could have done better than that also. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

08-25-2005	#13
cuisinartvette Join Date: Aug 2005 Location: San Fernando Valley, CA. Posts: 896	First run I left at about 2000;second one about 1500-Didn't slip it bad, nor dump it-Maybe I expect too much. I'm going to try another track when it cools off, see how it goes. Yes, more seat time should help, too. First run made some respectable shifts-Didn't want to miss at 7000 rpm;second run I hit all gears perfectly short of speedshifting. It was a blast, though I have to admit! i didnt' get the air temp;Guessing around 80ish-I noticed 1/2 hour after leaving the track it cooled off outside and my readut said 77 __________________ 1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj.

08-28-2005	#14
cuisinartvette Join Date: Aug 2005 Location: San Fernando Valley, CA. Posts: 896	For the member that was curious to how it ran, here's the poop... __________________ 1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj.

08-28-2005	#15
ShawnZR-1 Join Date: Jul 2005 Location: Atlanta, GA Posts: 81	I've dragged my Z about 10 times now just for the fun of it. The absolute best I've ever done is 12.96@111MPH. That was at Beach Bend too! My 60's are abismal, 2.2+ but that is on street tires. I can dial in a 13.2 and be damn sure I'd hit that all day long without breaking out. __________________ 1991 Chevrolet Corvette ZR-1