gavriil

First the 3 STOCK Cobras:

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2003 ford mustang cobra
User Notes:


Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 2700 miles
Aspiration: super-charged[8 psi]
Transmission: 6M
Max (RW/FW)HP: 355.7 @ 6530 rpms
Max (RW/FW)TQ: 352.4 @ 4110 rpms
Estimated Fly Wheel Horsepower: 423 @ 6530 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 420 @ 4110 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 67.8
Pressure (kPa): 30.0
Humidity (%): 0.0
Condition Details: Gear Ratio : 49.42 RPM/MPH Correction Factor : 0.96 SAE
Fan: off
Date and Time: 2003-04-05 - 13:14:36
Dyno Correction Factor SAE Corrected

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2003 ford mustang cobra
Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 0 miles
Aspiration: super-charged[8 psi]
Transmission: 6M
Max (RW/FW)HP: 365.1 @ 6430 rpms
Max (RW/FW)TQ: 336.6 @ 4410 rpms
Estimated Fly Wheel Horsepower: 435 @ 6430 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 401 @ 4410 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 90.0
Pressure (kPa): 29.9
Humidity (%): 0.0
Condition Details: Gear Ratio : 51.69 RPM/MPH Correction Factor : 1.00 SAE
Fan:
Date and Time: 2003-09-13 - 12:23:04
Dyno Correction Factor SAE Corrected

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2003 ford mustang cobra
Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 4000 miles
Aspiration: super-charged[8 psi]
Transmission: 6M
Max (RW/FW)HP: 362.3 @ 5950 rpms
Max (RW/FW)TQ: 374.8 @ 3290 rpms
Estimated Fly Wheel Horsepower: 431 @ 5950 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 446 @ 3290 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 29.7
Pressure (kPa): 29.7
Humidity (%): 0.0
Condition Details: Gear Ratio : 50.01 RPM/MPH Correction Factor : 1.00 SAE
Fan:
Date and Time: 2003-09-27 - 11:55:28
Dyno Correction Factor SAE Corrected

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Modded Cobras coming below.....

gavriil

MODDED COBRAS:

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2003 ford mustang cobra
User Notes:


Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 2200 miles
Aspiration: super-charged[13 psi]
Transmission: 6M
Max (RW/FW)HP: 477.2 @ 6700 rpms
Max (RW/FW)TQ: 424.2 @ 4120 rpms
Estimated Fly Wheel Horsepower: 568 @ 6700 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 505 @ 4120 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 62.3
Pressure (kPa): 29.9
Humidity (%): 0.0
Condition Details: Gear Ratio : 50.22 RPM/MPH Correction Factor : 0.96 SAE
Fan: off
Date and Time: 2003-04-05 - 21:20:12
Dyno Correction Factor SAE Corrected

Modifications

kenne bell supercharger
maco 2lb lower pully
magnaflow 2 1/4 muffler
dr gas x-pipe


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2003 ford mustang cobra
User Notes:


Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 2200 miles
Aspiration: super-charged[13 psi]
Transmission: 6M
Max (RW/FW)HP: 469.5 @ 6680 rpms
Max (RW/FW)TQ: 416.6 @ 4050 rpms
Estimated Fly Wheel Horsepower: 559 @ 6680 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 496 @ 4050 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 62.2
Pressure (kPa): 29.9
Humidity (%): 0.0
Condition Details: Gear Ratio : 49.66 RPM/MPH Correction Factor : 0.96 SAE
Fan: off
Date and Time: 2003-04-05 - 21:20:32
Dyno Correction Factor SAE Corrected

Modifications

kenne bell supercharger
maco 2lb lower pully
magnaflow 2 1/4 muffler
dr gas x-pipe


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2003 ford mustang cobra
User Notes:


Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 4700 miles
Aspiration: super-charged[13 psi]
Transmission: 6M
Max (RW/FW)HP: 506.7 @ 6080 rpms
Max (RW/FW)TQ: 474.2 @ 4240 rpms
Estimated Fly Wheel Horsepower: 603 @ 6080 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 565 @ 4240 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 82.0
Pressure (kPa): 30.0
Humidity (%): 0.0
Condition Details: Gear Ratio : 50.67 RPM/MPH Correction Factor : 0.98 SAE
Fan: on
Date and Time: 2003-05-10 - 13:53:24
Dyno Correction Factor SAE Corrected

Modifications

kenne bell supercharger
kenne bell throttle body
bassani midlength headers
dr. gas x-pipe
magnaflow 2.25 inch catback
kenne bell chip
kenne bell booster pump
holley air filter
matco 4lb lower pulley



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2003 ford mustang cobra
User Notes:


Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 4700 miles
Aspiration: super-charged[13 psi]
Transmission: 6M
Max (RW/FW)HP: 524.2 @ 6210 rpms
Max (RW/FW)TQ: 487.5 @ 4410 rpms
Estimated Fly Wheel Horsepower: 624 @ 6210 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 580 @ 4410 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 81.0
Pressure (kPa): 30.0
Humidity (%): 0.0
Condition Details: Gear Ratio : 50.37 RPM/MPH Correction Factor : 0.98 SAE
Fan: on
Date and Time: 2003-05-10 - 14:05:46
Dyno Correction Factor SAE Corrected

Modifications

kenne bell supercharger
kenne bell throttle body
bassani midlength headers
dr. gas x-pipe
magnaflow 2.25 inch catback
kenne bell chip
kenne bell booster pump
holley air filter
matco 4lb lower pulley
accelerated solutions machtane 2 quarts





2003 ford mustang cobra
User Notes:


Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 4800 miles
Aspiration: super-charged[18 psi]
Transmission: 6M
Max (RW/FW)HP: 523.2 @ 6680 rpms
Max (RW/FW)TQ: 507.1 @ 4050 rpms
Estimated Fly Wheel Horsepower: 623 @ 6680 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 604 @ 4050 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 75.7
Pressure (kPa): 29.9
Humidity (%): 0.0
Condition Details: Gear Ratio : 49.82 RPM/MPH Correction Factor : 0.98 SAE
Fan: on
Date and Time: 2003-05-31 - 21:28:12
Dyno Correction Factor SAE Corrected

Modifications

kenne bell supercharger
kenne bell throttle body
bassani midlength headers
dr. gas x-pipe
magnaflow 2.25 inch catback
ford recal chip
kenne bell booster pump
holley air filter
matco 8lb lower pulley
bp 103 octane



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2003 ford mustang cobra
Engine Specs: 4.6Liter dohc (8Cyl)
Mileage: 9800 miles
Aspiration: super-charged[20 psi]
Transmission: 6M
Max (RW/FW)HP: 546.9 @ 5920 rpms
Max (RW/FW)TQ: 585.1 @ 4260 rpms
Estimated Fly Wheel Horsepower: 651 @ 5920 rpms [assuming 16 % drivetrain loss]
Estimated Fly Wheel Torque: 697 @ 4260 rpms [assuming 16 % drivetrain loss]
Room temp / Inlet Temp (F): 0.0 / 89.1
Pressure (kPa): 29.9
Humidity (%): 0.0
Condition Details: Gear Ratio : 49.31 RPM/MPH Correction Factor : 1.00 SAE
Fan:
Date and Time: 2003-09-13 - 12:10:24
Dyno Correction Factor SAE Corrected

Modifications

kenne bell supercharger
kenne bell throttle body
bassani midlength headers
dr. gas x-pipes
magnaflow 2.25 inch mufflers
ford recal chip
kenne bell booster pump
s & b 12 inch air filter
matco 8lb lower pulley
vp 103 octane unleded gas
kenne bell cold air intake
ignition solutions plasma booster

gavriil

So a stock Cobra makes from 420HP to 435HP and modded it goes easily to 650HP ! Wow! That's what the Enzo makes folks. With a LOT less torque.

gavriil

The last one makes 300 HP at 3,000 RPM. Holy Moly!

Crazy Bimmer

ill take one please.

gavriil

Which one? Stock or modded?

hughesne

Its still a Ford.

Zapata

straight lines only...........impressive nonetheless....

jimcol711

god damn.....still so many stupid ignorant idiots saying "its still this" or "its still that" saying things like that make you look dumb. period.

that car is fucking amazing, look at that torque curve. look at those numbers. just amazing. id drive one.

Zapata

yea that's right...........we said it


great drag car but that's it.

CLS2001_97124

Very impressive! But in your comparsion, I'd still take the Enzo...

gavriil

There we go again.

gavriil

Yeah but I will still have enough money to get a GT2, a Murcielago, a Gallardo, a DB7 and who knows what else. You keep the Enzo

Zapata

ya only drive one car at a time

DISRUPTV

yes its a ford, so what?


its still an impressive accomplisment...these things can eat up z06s if they ever find traction

Nicky Pass

I think the 03' Cobra is probably the baddest production car ever.....and its under $35K

nicholbr

I would agree with you but with the MSRP on an enzo + 7g's for a brake job and the ability to void your warranty by using the wrong kind of oil in the car....i think i'll stick with the *slightly* less expensive cobra and throw a few bucks in the bank

Black CL-S 4-Life

Very nice but give me a BPU Supra anyday.

mc222

Mustangs are for kids...period


BUT - Id make an exception for the Cobra only

gavriil

About that. I will post a Z06 vs Cobra HP chart (all stock).

gavriil

I can only drive one car at a time anyways...

gavriil

Dont forget the $800 oil changes.

gavriil

Glad to hear ya say that

Ray Khan

Cobras are setup pretty well actually. Maybe not as agressive a suspension for the power they have, but pretty well nonetheless.

Zapata

bah don't say that because for less than 35k i could have car built that would wipe the floor with the mustang. Then my oil changes are cheaper than yours :P


MOREOVER, you're comparing an oil change on a MUSTANG versus dressed up f1 car. Slight difference.....

Zapata

agreed. not bashing the car just not a fair comparo to an exotic.

Joe5.0

The 03 Cobra runs neck & neck with a Z06, even though it's about 500 lbs heavier, and with a couple grand invested will run 10's. :o

You guys realize that they are making 600hp on pump gas and bone stock longblock correct? That's impressive for any maker, regardless if it's from Detroit or Tokyo.

And someone mentioned Supra's. Remember this, 500rwhp Supra = low 12's, 500rwhp Cobra = high 10's :P

I'd like to see the tq curve of a Supra vs. Cobra also.

BTW awesome dyno series, I'm lovin it.

CCType-S

I want my Cobra back....I mean 03 Cobra :P

CL SLeePeR

Never been a big Stang fan, but the '03 Cobra is definately impressive.

gavriil

Right. A dressed up F1 car, which pretends it's a street car. That changes the scope a lot and it's making it a hypocrite.

Although, I will even argue the "dressed up F1" comment. One glimpse at the weight difference and it's enough to make the Enzo have NOTHING to do with a true F1 racer car. No matter what it can do on the street.

gavriil

I compared the 650HP from the modded Cobra to the 650HP of the Enzo. That's the extend of my comparison. I did not compare the two cars.

gavriil

A stock Z06 is clearly and consistently faster on the dragstrip than a 2003 Cobra. But the Cobra engine makes more power. It cant overcome the weight though. Next post will show comparison dynos.

gavriil

Text by Thanos Pantazis:

I know many people on both sides are going to hate me for this one. But too bad because I am bringing you the straight facts and am drawing logical and obvious conclusions from these facts. I have seen so much arguing about RWHP numbers and ¼ mile time for both these cars that I had to add my two cents. Now, I will say this from the beginning, I am comparing STOCK cars here. Don’t come to me and say, "but this car does this with this mod",etc because it is completely out of the scope of this article.

I am using the same year for both cars (2003) and I have gone through the Dynoperformance data base and averaged all of our runs for both cars. Here are the results (FWHP uses 15% DT loss).

Ford Mustang Cobra: 360 RWHP = 424 FWHP (factory spec 390)
Chevrolet Corvette Z06 345 RWHP = 406 FWHP (factory spec 405)

Now some of you will notice that the Z06 numbers are right on the money with what the manufacturer claims and the Cobra numbers are much higher. There has been a lot of debate about Ford underrating this car because of past power rating issues. This is NOT the purpose of this article. These are straight RWHP numbers, and in my opinion are the only ones that count. You can say but you should really use this Drivetrain loss for this car and this one for that car, but at the end of the day the RWHP number tells you what the car is putting down to the pavement. And at the end of the day, the Cobra puts down 15 more RWHP than the Z06. End of story. That takes care of the power issue. Now what about the ¼ mile issue. The manufacturers claim the following:

Cobra = 13.1 sec. (3665 lbs curb weight)
Z06 = 12.4 sec. (3118 lbs curb weight)

An interesting note is that SVT does not provide performance numbers anymore. They leave it to the car magazines. So the “manufacturer’s” number above is an average of the published results I have seen from industry articles.

From our data base and track-side notes, we have seen these cars run in the following range (these numbers are from experienced drivers who frequently do ¼ mile runs):

Cobra = 12.7 – 13.3 sec.
Z06 = 12.2 – 12.5 sec.


The conclusion is that, despite the 03 Cobra putting down 15 more RWHP than the Z06, the vette beats it by about 0.5 sec in the 1/4 mile. As you may have guessed, it is the Cobra’s weight (and drag coefficient) that is killing it on the track. The 15 RWHP is not enough to overcome the 550 lb weight difference. The 550 extra pounds is in fact so much more that the 50 extra TRQ that the Cobra has at 3000 rpm (see graph) can’t even overcome it. Weight and drag are two aspects that are frequently forgotten and this comparison shows how important they are. The Cobra would need roughly an additional 50 HP to overcome this loss in a1/4 mile test.

Bottom line: Cobra outputs more power, Z06 is faster. Done.

gavriil

And let me denote here what Bob Lutz has very recently said to a journalist about the C6 and C6 Z06:

Complete thread here:

http://www.acura-cl.com/forums/showt...hreadid=119524

Journalist:

"You did the Viper during your stint at Chrysler, and now Neil Hannemann, who led the Viper team, is doing the GT at Ford. Does GM need a Viper/GT class vehicle, or is the Corvette strong
enough to handle that role?"

Bob:

"Let me tell you that the Corvette C6 will have versions where we confidently predict it will suck the doors off of both the cars that you just named. The current Z06, with 400 horsepower, on the Gingerman Raceway, laps faster with its 400 horsepower than the new Viper does with 500. So other than just brutal straightline acceleration, the Z06 is faster today. Clearly the C6 Corvette, without giving anything away, is going to be a major step forward in vehicle mass, dimensions, handling, braking and, most important of all, power-to-weight ratio. So I think whatever gap exists now is going to be eliminated — in total performance. I think we'll match the competition in acceleration, and we will beat them in on-road handling. And if the Z06 version of the C6 is not enough to do it, we've got a few tricks up our sleeve, which we're already investigating. But it will always be Corvette-based."

gavriil

Now let me remind everyone that the new Viper RT does the 1/4 in 12.1 consistently (even C&D tested it at 12.1 secs).

Joe5.0

I agree with everything you posted gavril. I know for a fact that the Cobra has 3.55 rear gears, but what is the ratio in the Z06? 500lbs is a ton, and also the Z06 has 295/35/18 Goodyear Eagle Supercar's, while the Cobra which is heavier, only gets 275/45/17 Goodyear Eagle F1's, or basically the same tires as a GT only a bit wider. From what I've seen with drag radials the Cobra is much more capable of taking advantage of the power advantage, and can run mid 12's consistently.

gavriil

As Thanos mentioned above:

Cobra = 12.7 – 13.3 sec.
Z06 = 12.2 – 12.5 sec.

Joe5.0

Well I dont consider 12.7's "mid 12's", to me mid 12's = 12.4-12.6. Odds are that if a best of 12.7 was run that the average is probably 12.8-12.9.

darrinb

not to be a mag racer but motor trend did a comparo between a base c5 vett vert vs a vert cobra and the vette out accelerated it, given equal drivers a z06 will walk a 03 cobra, its lighter and gets off the line way easier

Joe5.0

That's true, but what was the weight of each? I'm sure both being convertibles it probably made the differentiation in curb weight even less favorable for the Cobra.