03 cobra or 03 z06

hey fellas two of my buddies are gonna race this weekend. one has an 03 cobra bone stock and my other buddy has an 03 z06 stock. now with perfect driving, what would be the faster car cause i think it would be close although the vette feels quicker? any opinion would be appreciated thanks.

z06

i figured the z06 might have the edge and now my buddy with a 05 c6 a4 wants to get in but the z06 still feels quicker than the c6. my buddy says he has the z51 package on his c6 but i think that only comes in a stick. im pretty sure my buddys z06 will beat both by very little. but the c6 is one fast car for an auto and being stock.

Z06s 0wn all! usually.. :D Once you factor perfect driving out of the equation, all bets go out the window.

z06


x2 z06 is tha sh*t

Just make sure the Cobra is stock like he says it is. I'm sure a pulley and chip are real easy to miss to the untrained eye.

But, nevertheless, Z06s are just nasty, so that's my pick.:cool:

Perfect driving: Z06. And yes, assuming the snake is stock. And Z06's do edge out the base c6 from what i hear.

ZO6 for sure, Cobra has way more weight then the ZO6. Still the ZO6 has way more top end and more c.i.d. then the Cobra. Cobra make get him right out of the whole but once the traction hooks up with the ZO6, he will have the Cobra in his rear view mirror!

Z06 will take it, but as mentioned, make sure the snake is stock. They can do alot of small mods that add to big power and are very hard to notice.

i like you friends

Properly driven I think the Z06 would take him on all ends. The dohc motor in the cobra makes a lot of torque, but it makes it up high, whereas the z06 has it lower...so it should be able to out launch the Cobra as well as take it on the big end with it's c/d, frontal area and weight advantage.

ZO6 for sure, Cobra has way more weight then the ZO6. Still the ZO6 has way more top end and more c.i.d. then the Cobra. Cobra make get him right out of the whole but once the traction hooks up with the ZO6, he will have the Cobra in his rear view mirror!

Stock for stock w/ perfect driving the zo6 is faster...Once the mods begins things change real quick though

Just a pulley change will take the Cobra to 550+ at the crank. Yes, it's heavier, but there under the hood stock *looking* Cobras riding around in the 600HP range.

If the Cobra is stock, Z06 wins. But I'll bet it's not stock, or the guy would know the Z06 will win. Therefore, I predict the Cobra is not stock and will win. If I were the Cobra driver, that's how I'd play it.

Make sense?

The Z06 should win. Keep in mind if the Z06 owner forgets to turn off the ASR he has a good shot of losing.
My best time in a stock Cobra is 12.87 at 112MPH. Best time in a pre 06 Z06 is 12.22 at 117MPH. One run I went 12.9 at 111MPH by forgetting to turn off the ASR-oops.

Z06= still king of the hill biatch.

without a doubt. With equal drivers the Z06 will win. The fastest bone stock cobra I've heard about ran mid 12's while GMHTP got a '04 Z06 (same as '03) to run 11.9.

The C6 Z51 package is just a suspension setup, and brakes too, I think. You can get it with either transmission.

Stock for stock, Z06 takes it by a length or two, with the C6 Z51 probably edging out the Cobra as well.

Like everyone said, watch out for small mods on the Cobra. If he wins and the Corvette drivers didn't screw up, I can almost guarantee that he's not stock. :D

-Jake

The Z06 should win. Keep in mind if the Z06 owner forgets to turn off the ASR he has a good shot of losing.
My best time in a stock Cobra is 12.87 at 112MPH. Best time in a pre 06 Z06 is 12.22 at 117MPH. One run I went 12.9 at 111MPH by forgetting to turn off the ASR-oops.

BS...best time I saw you run in the Z06 was a 13.4 at 105. That was on drag radials too.

I see crack is affecting your mind again.

Are they gonna be on street tires or slicks?
I'm still going with everyone else though apples for apples the Z06 wins, but even just a pulley change and friggin' K&N filter and that Cobra will have one hell of an advantage.

I see crack is affecting your mind again.LOL!
Sorry...:D
S.

I see crack is affecting your mind again.

Still out drive your ass.

Still out drive your ass.

98 MPH from a stock LX 5.0 ? ...can they really pull like that?

That's one hell of a pulley!! A smaller pulley alone will only bring the car up to about 400-415 rwhp. For 550 hp you'll easily need all the bolt ons out there.

And I'm sorry, but I think you guys are giving the stock Cobra too much credit. Best I've seen (online stock) in snormans car. In person, I've never seen one close to that though. At my track, the stockers run between 12.8 and 13.4@109-112. The only stock Z06 I've seen run pulled 12.5@115 (against me no less...but I pulled my best ever of 12.2@122 on that run:)) Properly driven and both cars stock, I think the Z06 will beat it by 3 lengths.

Just a pulley change will take the Cobra to 550+ at the crank. Yes, it's heavier, but there under the hood stock *looking* Cobras riding around in the 600HP range.

If the Cobra is stock, Z06 wins. But I'll bet it's not stock, or the guy would know the Z06 will win. Therefore, I predict the Cobra is not stock and will win. If I were the Cobra driver, that's how I'd play it.

Make sense?

98 MPH from a stock LX 5.0 ? ...can they really pull like that?

Yeah. If they are in good tune and not a heavily optioned car.

The Z06 will win. A pulley to the Cobra and it's over. I just sold my 03 Cobra. It was fast as hell (591 rwhp) but damn it was heavy. I've raced ton's of 03-04 Cobras in my Z06 and have beat all but one. He had a KB @ 17 psi. I still was pretty close though. Weight does make all the difference. Most of the guys i've raced were 3800lbs+. They all had me on HP/TQ but i have them in weight.

3 for 3 for me

I raced two Z06's on the street and when my Cobra was stock. Beat both of them. Also saw one at the track running 12.9-13.0's on a night I was running 12.7-12.8's.
But I agree that, equally driven, the Z06 should be .4-.5 quicker.
S.

Everything else being equal, the Z06 should certainly win. Do want to make a couple of points....

ZO6 for sure, Cobra has way more weight then the ZO6. Still the ZO6 has way more top end and more c.i.d. then the Cobra. Cobra make get him right out of the whole but once the traction hooks up with the ZO6, he will have the Cobra in his rear view mirror!
CID is easily made up for by the blower. The difference in top end is primarily due to the much better aerodynamics of the Vette.

...The dohc motor in the cobra makes a lot of torque, but it makes it up high, whereas the z06 has it lower....
That is incorrect. The blown DOHC makes its peak torque (390 rated) at 3500 rpm. The LS6 makes its peak torque (400 rated) at 4800 rpm.

Equal drivers, both stock, Zo6 all the way. Lighter and more aerodynamic. What bob cosby said is right on the money.

Oh yea, a pulley alone on my car it made 426rwhp 444rwtq. With a few more simple bolt on's and a tune to go with that pulley, I'm at 500rwhp which is very easy to make on my car. More than that it starts to get pricey. Even with all that HP a local modified Z06 (heads, cam intake) beats me every time at the track. Its all relative, there's always someone faster:cool:
Leon

Having raced my car when it was bone stock, I can say with all certainty:

Z06

The C6 Z51 package is just a suspension setup, and brakes too, I think. You can get it with either transmission.-Jake
I'm pretty sure the C6 M6 Z51 has different gearing the A4 or A6 Z51 has the same gearing as the base f55 or Z51

Yeah, I didn't think about the blower adding torque down low...I was thinking about n/a dohc's, but still, according to the dyno's I found online, the mustang looks to peak at around 4500 rpms. It's got a nice flat curve, but the Z06 still looks to have a torque advantage from 2500 rpms or so up to 6k rpm...Here's the links if you want them:

http://www.westernmotorsports.ca/wmsweb/wmsgifs/03cobradyno.jpg
http://www.z06vette.com/forums/printthread.php?t=60969



Everything else being equal, the Z06 should certainly win. Do want to make a couple of points....


CID is easily made up for by the blower. The difference in top end is primarily due to the much better aerodynamics of the Vette.


That is incorrect. The blown DOHC makes its peak torque (390 rated) at 3500 rpm. The LS6 makes its peak torque (400 rated) at 4800 rpm.

Z06= still king of the hill biatch.

C6 Z06= king of the world lol...

you guys should go over to www.svtperformance.com

theres ALOT of cobra movies racing Fbods Vettes and all that...

sotck for stock a C5 Z06 will walk a cobra...
the Z51 C6 has shorter gears in the tranny and 3.42's then a "base" car...the C6Z51 will hang for a while but the Z will walk http://videos.streetfire.net/search/c6/0/41FA64C9-7DE5-40E0-B4E7-7855F9D40DC8.htm

theres one of a FACTORY C6Z walking a 520RWHP cobra...

theres one of a FACTORY C6Z walking a 520RWHP cobra...Do you have a link to that vid?
There is one vid of a C6Z beating a "pullied" '03 Cobra, but the owner of the Cobra has no numbers or track times for the car.
A "520RWHP" Cobra would likely be a ported Eaton car...and it's not going to get "walked" by a stock C6Z.
S.

Do you have a link to that vid?
There is one vid of a C6Z beating a "pullied" '03 Cobra, but the owner of the Cobra has no numbers or track times for the car.
A "520RWHP" Cobra would likely be a ported Eaton car...and it's not going to get "walked" by a stock C6Z.
S.

ive been looking for it for over an hour...im getting close i beleive...

here it is
http://www.03svtcobra.net/Videos/Ported03CobraVsC6Z06.wmv

and yes an an eaton car

That vid is a few months old, and they were supposed to run it back because the Cobra was having bad belt slip. You can even hear in the vid that the blower isn't spooling right.
Z06 is a badass car, and several have run in the mid-120's, but a ported Eaton car can be a handful.
S.

Yeah. If they are in good tune and not a heavily optioned car.
B.S

Equal drivers, both stock, Zo6 all the way. Lighter and more aerodynamic. What bob cosby said is right on the money.

Oh yea, a pulley alone on my car it made 426rwhp 444rwtq. With a few more simple bolt on's and a tune to go with that pulley, I'm at 500rwhp which is very easy to make on my car. More than that it starts to get pricey. Even with all that HP a local modified Z06 (heads, cam intake) beats me every time at the track. Its all relative, there's always someone faster:cool:
Leon
Nice numbers man.

Was the numbers in sig with the 500 RWHP?
Whats your race weight?

Yeah, I didn't think about the blower adding torque down low...I was thinking about n/a dohc's, but still, according to the dyno's I found online, the mustang looks to peak at around 4500 rpms. It's got a nice flat curve, but the Z06 still looks to have a torque advantage from 2500 rpms or so up to 6k rpm...Here's the links if you want them:

http://www.westernmotorsports.ca/wmsweb/wmsgifs/03cobradyno.jpg
http://www.z06vette.com/forums/printthread.php?t=60969


Even with a roots type blower NA bigger cube engines do seem to have an advantage down low.

Although the Snake has impressive figures. I actually had an article that showed the Cobra's tested had more then the advertised HP saying they where more like a 415-420 HP car,stock.I'll see if I can find it. Then again I have read the same thing about LS6's.

Even with a roots type blower NA bigger cube engines do seem to have an advantage down low.

Although the Snake has impressive figures. I actually had an article that showed the Cobra's tested had more then the advertised HP saying they where more like a 415-420 HP car,stock.I'll see if I can find it. Then again I have read the same thing about LS6's.


I have heard on that on numerous occasions as well. One of the guys over on svtperformance.com dynoed 383 rwhp stock SAE corrected. That is definetly not the norm, but it is well over 390 crank hp, unless there is only 7 horsepower lost through the drivetrain, and in that case I would love to see that drivetrain.

The last 03 Cobra I was in made more torque down low than my ls1 does, at least from a seat of the pants feel. But it was a pretty obvious difference.

B.S

Really...I guess you are an expert on the subject...? I trapped a little over 98 in my stock 5.0 with me at over 250lbs driving.

I was there the night he did it(97.9). In fact I went 15s in his car because I couldn't launch it due to the blown rear.
Have seen others hit 95-97 MPH in good shape. 90 percent are no longer stock or are modded.

The Z06 should win. Keep in mind if the Z06 owner forgets to turn off the ASR he has a good shot of losing.
My best time in a stock Cobra is 12.87 at 112MPH. Best time in a pre 06 Z06 is 12.22 at 117MPH. One run I went 12.9 at 111MPH by forgetting to turn off the ASR-oops.

I HATE ASR, cost me a race against an SRT4 in my z28. :mad:

Really...I guess you are an expert on the subject...? I trapped a little over 98 in my stock 5.0 with me at over 250lbs driving.
I had a 5.0 GT and it was nowhere near that quick.m5 GT 89
I guess your mustang had 270hp Stock? It would almost need it to trap that high.

actually my S-H-O was faster then my Mustang GT was.

I was there the night he did it(97.9). In fact I went 15s in his car because I couldn't launch it due to the blown rear.
Have seen others hit 95-97 MPH in good shape. 90 percent are no longer stock or are modded.
With testament I guess Ill buy it.;)

Missed this thread...

I raced an '03 Cobra two weeks ago at the GIR. The Cobra driver was pretty cool, since we had wait for some time for our turn, we talked for a quite awhile.

His mods are CAI, Catback, and DRs

My mods are CAI, LT headers, (still running street tires)

When we finally made a pass, he ran 12.6@111 and my time was 12.4@107 (I missed 4th gear, shifted to 6th gear :( ). I was trapping 118 - 119 with other passes. The Cobra running on DR was a big advantage and he was in the lead until I shifted to 3rd gear then I started to walk him in a decent pace until I missed 4th gear then he nearly caught up with me.

Z06 all the way!

z06 no question...

I wish i could have both,but The cobra is more affordable to me,and when mods come into play all bets are off.But i honestly love both cars,the Z06 is basically a bad ass ride.:bow: