cobra vs. vette
Wow, what a thread! When I started reading it, I had all kinds of things that I was going to say, since I have a C5 and my bro has an 03 cobra. Unfortunately no one is talking about that anymore. I guess I'm too late.
Staging Lane
Joined: Jul 2004
Posts: 60
Likes: 0
From: Anniston,AL
Originally Posted by Mike Frey
Maybe one reason, 'cause after telling us about your missing shifts and getting in two accidents, you claim you don't need to work on your driving skills. Sounds a lot like my 17 yr old. He's a great driver!! 
TECH Fanatic
Joined: Aug 2002
Posts: 1,399
Likes: 0
From: katy, tx
Originally Posted by TORCHD U
whoa now, I put out a 12.83@110 with a stock C5 while I was 17.
If want to test your driving skills, go autocross your car and then you will truely find out if you are in touch with your vehicles limits. You will learn cornering speeds (handling limits), braking points (brake limits) and accelerating out of turns. You will have to become smooth with your inputs and familiar with your vehicles limits. Drag racing only teaches you launching and shifting. There is far more to being fast on a road course and it develops all of your driving skills.
Thread Starter
Teching In
Joined: Dec 2004
Posts: 46
Likes: 0
From: pearl river,louisiana
Originally Posted by Dean-o
There is more to driving than going fast in a straight line...LOL!
If want to test your driving skills, go autocross your car and then you will truely find out if you are in touch with your vehicles limits. You will learn cornering speeds (handling limits), braking points (brake limits) and accelerating out of turns. You will have to become smooth with your inputs and familiar with your vehicles limits. Drag racing only teaches you launching and shifting. There is far more to being fast on a road course and it develops all of your driving skills.
If want to test your driving skills, go autocross your car and then you will truely find out if you are in touch with your vehicles limits. You will learn cornering speeds (handling limits), braking points (brake limits) and accelerating out of turns. You will have to become smooth with your inputs and familiar with your vehicles limits. Drag racing only teaches you launching and shifting. There is far more to being fast on a road course and it develops all of your driving skills.
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by mustang chick04
right ok! you think you can beat me? well i just got alot done to my car so we will just see!
Yeah I know vince would. 555 at the wheels N/A and then hes gonna spray???
Good luck to ya LS1 Tech Stories
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6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
In fact I have.
I raced against a modded '03 with my stock 2002 Z06.
The Cobra had header, exhaust, a pulley, and the basic bolt ons. At the time he was mking about 455-461 RWHP. From a dead stop in 4 heads up races I pulled him by 2 lengths including a pull from a dead stop to 150 mph.
We did 4 roll on races and I lost each of these by 1 1/2 lengths.
Understand that a 03 Cobra is over 600 lbs heavier than a Z06 (about 3850 with driver). That additional HP is required to to be EVEN with a Z06. My Z06 made 356-359 RWHP stock. It weighs 3250 with me in the car and a light load of fuel. The car makes 372 RWHP with just the airbox lid off and no other changes.
So,
Take
3250/356 = 9.12 lbs per hp for the Z06
3250/359 = 9.05 lbs per hp for the Z06
3250/372 = 8.73 lbs per hp for the Z06
For a Cobra weighing around 3850 you'd be looking at needing:
3850/9.12 = 422 RWHP
3850/9.05 = 425 RWHP
3850/8.73 = 441 RWHP
Now take into account the better gearing of the Z06 in 1st and 2nd with its M12 transmission. If you get the jump, there isn't enough time to catch the Z06. In a Z06, even though it has 3.42's the 1st and 2nd ratios make it like a 3.90 in a regular M6 car.
As you can see from the HP figures above, in our roll races where the "jump" was negated by going from a roll, the HP advantage of the car ended up giving him about a 1-1.5 length advantage which is exactly what I would expect.
I hope this answers your question.
As a side note, I've manage to rack up some decent times in a Z06. This should give you some idea of what a stock Z06 can do if driven hard...
My Personal Bests in 2002 Z06
Z06 with Airbox lid off and Et Streets 1-24-2003:
http://www.z06vette.com/forums/showthread.php?t=30089
60' - 1.675
330 - 4.822
1/8 - 7.442
mph - 94.62
1000 - 9.692
1/4 - 11.596
mph - 118.53
Best 1/8th mile airbox lid off and on Et Streets (same night)
60 - 1.619
330 - 4.785
1/8 - 7.429
mph - 93.74
1000 - 11.684
MPH - 108.45
100% Showroom stock Z06 1-11-2004 (stock tires, stock airbox with stock lid, etc...)
http://www.z06vette.com/forums/showthread.php?t=51353
60 - 1.818
330 - 4.999
1/8 - 7.610
MPH - 95.29
1000 - 9.868
1/4 - 11.783
MPH - 116.90
Stock except airbox lid removed (same night as above)
60' - 1.767
330 - 4.880
1/8 - 7.470
MPH - 95.88
1000 - 9.710
1/4 - 11.606
MPH - 117.95
Previous 100% Stock best 2-10-2002
http://www.z06vette.com/forums/showthread.php?t=10491
60' - 1.852
330 - 5.055
1/8 - 7.709
mph - 93.32
1000 - 9.992
1/4 - 11.933
mph - 114.53
I raced against a modded '03 with my stock 2002 Z06.
The Cobra had header, exhaust, a pulley, and the basic bolt ons. At the time he was mking about 455-461 RWHP. From a dead stop in 4 heads up races I pulled him by 2 lengths including a pull from a dead stop to 150 mph.
We did 4 roll on races and I lost each of these by 1 1/2 lengths.
Understand that a 03 Cobra is over 600 lbs heavier than a Z06 (about 3850 with driver). That additional HP is required to to be EVEN with a Z06. My Z06 made 356-359 RWHP stock. It weighs 3250 with me in the car and a light load of fuel. The car makes 372 RWHP with just the airbox lid off and no other changes.
So,
Take
3250/356 = 9.12 lbs per hp for the Z06
3250/359 = 9.05 lbs per hp for the Z06
3250/372 = 8.73 lbs per hp for the Z06
For a Cobra weighing around 3850 you'd be looking at needing:
3850/9.12 = 422 RWHP
3850/9.05 = 425 RWHP
3850/8.73 = 441 RWHP
Now take into account the better gearing of the Z06 in 1st and 2nd with its M12 transmission. If you get the jump, there isn't enough time to catch the Z06. In a Z06, even though it has 3.42's the 1st and 2nd ratios make it like a 3.90 in a regular M6 car.
As you can see from the HP figures above, in our roll races where the "jump" was negated by going from a roll, the HP advantage of the car ended up giving him about a 1-1.5 length advantage which is exactly what I would expect.
I hope this answers your question.
As a side note, I've manage to rack up some decent times in a Z06. This should give you some idea of what a stock Z06 can do if driven hard...
My Personal Bests in 2002 Z06
Z06 with Airbox lid off and Et Streets 1-24-2003:
http://www.z06vette.com/forums/showthread.php?t=30089
60' - 1.675
330 - 4.822
1/8 - 7.442
mph - 94.62
1000 - 9.692
1/4 - 11.596
mph - 118.53
Best 1/8th mile airbox lid off and on Et Streets (same night)
60 - 1.619
330 - 4.785
1/8 - 7.429
mph - 93.74
1000 - 11.684
MPH - 108.45
100% Showroom stock Z06 1-11-2004 (stock tires, stock airbox with stock lid, etc...)
http://www.z06vette.com/forums/showthread.php?t=51353
60 - 1.818
330 - 4.999
1/8 - 7.610
MPH - 95.29
1000 - 9.868
1/4 - 11.783
MPH - 116.90
Stock except airbox lid removed (same night as above)
60' - 1.767
330 - 4.880
1/8 - 7.470
MPH - 95.88
1000 - 9.710
1/4 - 11.606
MPH - 117.95
Previous 100% Stock best 2-10-2002
http://www.z06vette.com/forums/showthread.php?t=10491
60' - 1.852
330 - 5.055
1/8 - 7.709
mph - 93.32
1000 - 9.992
1/4 - 11.933
mph - 114.53
Last edited by J-Rod; Jan 20, 2005 at 10:59 AM.
TECH Apprentice
Joined: Aug 2003
Posts: 391
Likes: 0
From: NoVa
Stock for stock = ZO6 The math alone says it all
Stock ZO6 3150LBS @ 405HP
Stock Cobra 3650LBS @ 390HP
I ran my buddies 03 (484RWHP) when I was stock and owned him in 1st 2nd and 3rd. 4th he went flying by me. He was still learning how to drive it, unfortunately when he finally got it down .....I did AFR heads and a Comp cam and pulled on him in 4th.
Both cars ran MID 12s @ 118 (terrible 60' and traction hop), pretty evenly matched!
But the Z still puts 1-2 cars on him out of the whole everytime....and stays there.
Z made 410RWHP to his 484RWHP
Stock ZO6 3150LBS @ 405HP
Stock Cobra 3650LBS @ 390HP
I ran my buddies 03 (484RWHP) when I was stock and owned him in 1st 2nd and 3rd. 4th he went flying by me. He was still learning how to drive it, unfortunately when he finally got it down .....I did AFR heads and a Comp cam and pulled on him in 4th.
Both cars ran MID 12s @ 118 (terrible 60' and traction hop), pretty evenly matched!
But the Z still puts 1-2 cars on him out of the whole everytime....and stays there.
Z made 410RWHP to his 484RWHP
Originally Posted by mustang chick04
and why do you say that? have you ever race one? 
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by mustang chick04
wait does he live in dallas cause im goung there to see my daddy this spring break! and during the summer!