cobra vs. vette
Originally Posted by mustang chick04
ok that is enough im getting sad now!
Last edited by 98Z28ID; Jan 20, 2005 at 08:33 PM.
Launching!
Joined: Mar 2003
Posts: 294
Likes: 0
From: Nor Cal
Originally Posted by J-Rod
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
hmm, i havnt had the chance to own both cars, but i have driven both... and i am much more satisfied with the z06.... not because it is GM, becase it just feels the best while driving...
cobra spins the tires too much, have fun catching traction in one.. without nittos...
vette is just a all around better car IMO... it may only have 2 seats... thats when you buy a camaro or a trans am...
i raced a slightly modded cobra in my stock z-28 and i was not impressed at all by cobra...
but thats just my $0.02
Dan @ www.ChicagoStreetRacing.net
cobra spins the tires too much, have fun catching traction in one.. without nittos...
vette is just a all around better car IMO... it may only have 2 seats... thats when you buy a camaro or a trans am...
i raced a slightly modded cobra in my stock z-28 and i was not impressed at all by cobra...
but thats just my $0.02
Dan @ www.ChicagoStreetRacing.net
Originally Posted by TORCHD U
not trying to offend anyone but I always compared cobras to the WS6,SS... a corvette is another ball game
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
Originally Posted by mustang chick04
ok! well if yall think so... what ever! i have raced a vette and i won so i disagree!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo 6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
Originally Posted by mustang chick04
school is in session???? what do you mean?
Formerly MagRedC5
Joined: Dec 2002
Posts: 235
Likes: 0
From: San Antonio, TX
Originally Posted by TORCHD U
not trying to offend anyone but I always compared cobras to the WS6,SS... a corvette is another ball game
When the C6 Z06 hits the streets, then the Vipers better beware. 
Staging Lane
Joined: Jul 2004
Posts: 60
Likes: 0
From: Anniston,AL
Originally Posted by Cary
When the C6 Z06 hits the streets, then the Vipers better beware. Mustang Chick, I dont think you have a Cobra... just the way you act I guess... Mind giving me a VIN#?
Formerly MagRedC5
Joined: Dec 2002
Posts: 235
Likes: 0
From: San Antonio, TX
Originally Posted by mustang chick04
i have a pic if yall want of me in my car but im about to race so im not looking and my car looks good! 
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by TORCHD U
Yes sir, people will call it the snake charmer, .... sorry Cobra owners - we arnt talking about you!
Mustang Chick, I dont think you have a Cobra... just the way you act I guess... Mind giving me a VIN#?
Mustang Chick, I dont think you have a Cobra... just the way you act I guess... Mind giving me a VIN#?
Hahha calling her out....Your probably right.
Hey TORCHD U can you tell me where a good dyno is in al. Staging Lane
Joined: Jul 2004
Posts: 60
Likes: 0
From: Anniston,AL
Theres a place called Z1 Motorsports in Carrolton,GA that has a dyno.
Theres also a place called SpeedSouth in Rainbow City (where ever that is)
I need to get off my butt and go put down some numbers though.
Theres also a place called SpeedSouth in Rainbow City (where ever that is)
I need to get off my butt and go put down some numbers though.