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Maybe I can help this out a bit. I owned a 99 LS1 WS6 Trans Am. I had quite the list of modifictions. Put about 430 to the wheels. Now my boss had just bougth an 03 Cobra put on K&N, cat-back, and shifter. I beat him 3 out of 3, but not by much. His was brand new...like 500 miles or so. He ran very consistent 13.4 at the track (4500 ft elevation) and I ran a 13.2. his was in about 105 degree weather. I sold my T/A b/c I got married. With his chip and pulley, he would smoke it now. He spent far less on modifications. I enjoy forced induction from the factory b/c you can get so much more for so cheap. All of the things I have read and seen...the Cobra is better. I spent so much money on my T/A and w/ just a bit of money you can do so much more with the Cobra. I loved my LS1, ad I think it looked better with the ram air and stuff. The Cobra looks still too much like a regular mustang (a non-car person wouldn't know the difference) but my T/A was quite the attention getter. SO take that for what you will.
98 E0 SVT with some stuff
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Originally posted by Tim:
Maybe I should pass the bong over to you, 
Tim
Originally posted by Forum Rules:
3. ...Attempts to defeat the built-in censor will be met harshly.
Diesel owns you
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Originally posted by chknhwk:
I know the competition - I respect the competition - but I'll love my Ford more. 
Word! 
1998 Mystique LS:
-2.5 Duratec ATX
-Vibrant White
--------------------
=Pics=
=Info=
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We're also comparing engines that are over a litre in displacement difference, never mind the FI. What if they chose to put the Lightening engine in the SVT? Then would we be having this conversation? In any case, they chose what they chose. I mean really, anymore and it starts getting expensive and cramped.
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Originally posted by Tim:
No disrespect to Ford, but I've seen slightly lower numbers than the ones given in a naturally aspirated LS1 with modest internal modifications (springs, camshaft, retainors), exhaust headers, X-pipe, and SLP intake lid. The supercharger is awesome, and for modding what can be better than free factory boost on an already high displacement factory engine, however Ford is falling behind, IMHO. The battle of the pushrods versus the overhead cams is ending up in favor of the engine with the longer stroke.
I seriously hope the next generation Cobra engine will be as good of a contender as the new generation GM engines. These guys up in Ford can produce amazing 4V/c, DOHC all alluminum engines like the Duratec on the low end of their product line, yet on the higher end it takes boost to silence their competition ?
On that thought, though, it beats the hell out of what I drive!
Tim
boy i smell a troll, you had better put on your flame suit tim [zippy zips his up] 
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Originally posted by stilov:
Maybe I can help this out a bit. I owned a 99 LS1 WS6 Trans Am. I had quite the list of modifictions. Put about 430 to the wheels. Now my boss had just bougth an 03 Cobra put on K&N, cat-back, and shifter. I beat him 3 out of 3, but not by much. His was brand new...like 500 miles or so. He ran very consistent 13.4 at the track (4500 ft elevation) and I ran a 13.2. his was in about 105 degree weather. I sold my T/A b/c I got married. With his chip and pulley, he would smoke it now. He spent far less on modifications. I enjoy forced induction from the factory b/c you can get so much more for so cheap. All of the things I have read and seen...the Cobra is better. I spent so much money on my T/A and w/ just a bit of money you can do so much more with the Cobra. I loved my LS1, ad I think it looked better with the ram air and stuff. The Cobra looks still too much like a regular mustang (a non-car person wouldn't know the difference) but my T/A was quite the attention getter. SO take that for what you will.
Ouch, 13.4 on 430rwhp? I have a heavily modified LS1 (see sig) and when it was running 400rwhp on the nose, I was 11.87 @ 117.8 and that was considered slow, many are running around 11.3 @122 with that same amount of power. I have subsequently learned that my clutch was not setup right, which was causing major problems (slipping and refusal to shift at WOT and high rpm--I just thought I was a lousy driver), but I expect the car to dip into the 10s now at full weight (3616 pounds). Granted, I have a lot into the car now, 27.5K for the car brand new (SS with all options and some extras like aftermarket leather and slp exhaust), and about now about 15k into modifications. I also have a forged bottom end, and the car will either see a medium shot of nitrous or a supercharger next year, and it should see close to 650 - 700rwhp.
I like the 03 cobras a lot. It is easy to get them to some serious power because the engine is made for forced induction out of the factory. However, they are like the supras, put down great numbers on the dyno but generally do not ET as well in the 1/4 mile as a properly prepped LS1. For instance, 480rwhp cobra I know, with bolt-ons and pulley, runs 11.7 @ 118 at the track. Id be furious if my LS1 only ran 11.7 with that much power -- I would know something was wrong, as I do now -- I was dragging my flywheel because the clutch wasnt disengaging/engaging correctly.
The cobras with the keanne-bell blowers sound like whipples -- very odd sound, but I dont think youd complain too much if you had 600rwhp in your street driven car.
00 SVT Contour: SHM LT headers, LSD, Spec Stg 3...dyno:190.3whp sold 02/04
04 Subaru Baja Turbo 5-spd
00 Camaro SS 393cid: 510rwhp/469rwtq, 11.16 @ 124.95(hit 1-2 limiter)
www.erikz.org
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Yes...But please realize we are talking 4500ft elevation...makes a huge difference! I took it to TX (sea level about) and it was a totally different car.
98 E0 SVT with some stuff
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Originally posted by Tim:
I seriously don't understand why people put too much emphasis on the Cobra's supercharged 4.6L vs the GM naturally aspirated 5.7L LS1.
Tim
your comparing 2 engines with a displacement difference of over a LITER...thats like comparint the Triton V-10 to the Magnum V10...the magnum is an 8.0L and the triton is 6.8...  there is no comparison.
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Originally posted by GreenNuggs:
We're also comparing engines that are over a litre in displacement difference, never mind the FI. What if they chose to put the Lightening engine in the SVT? Then would we be having this conversation? In any case, they chose what they chose. I mean really, anymore and it starts getting expensive and cramped.
actually ford did put the 5.4 liter in the '00 cobra r and n/a it runs about the same as the supercharged 03 cobra...i also don't see what difference it makes what engine is in the '03 its still fast....
new,new ride!
'99 svt
black/mnb
'95 mustang gt sold!
'98 svt #800 sold!
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Originally posted by PhatSVT:
Originally posted by Tim:
Actually, yes I am high!
However, regardless, that is not the reason for the post. I love my blue oval as much as the next (interior and design quality comes to my mind first for Ford above all other domestic contenders), however after taking a ride in a 98 Z28 t-tops putting down 400 to the wheels (and, yes, I saw the dyno sheet!) with nothing more than a few thousand in modifications installed at a local shop, I seriously don't understand why people put too much emphasis on the Cobra's supercharged 4.6L vs the GM naturally aspirated 5.7L LS1.
Perhaps when the Cobra's go into preowned and drop about 15 grand from their fair market value (which they won't for probably another good 10 years since the 03 and 04's SVT's mean the end of a model generation) then I'll start appreciating something that's within my reach of affording.
BTW, no disrespect intended for those on this board who own Cobra's; if you've got the $$$, spend it! 
Tim
Why are you saying supercharged compared to N/A? There is a reason they didnt use force induction. You can say well if a Camaro slaps on a supercharger then it would be the end for the Cobra. Well, then the Cobra can slap on a Kenne Bell for the same price and easily put down over 600 RWHP. So whatever the LS1 can do the Cobra can. Plus the Cobra's bottom end can handle much more. I can go on and on about the Cobra, but it seems we all have our own opinion. This will turn into a whole GM vs Ford ordeal. So I'll shut up now.
Ah, no reason in particular. I just found it to be a testament to GM engineering that the naturally aspirated LS1, which technically is in the same class of engine as the Ford 4.6, mods about the same as its supercharged competitor up to a point. The supercharged LS1's are, of course, beasts as well. It just seemed to me like Ford would have an upper hand with its efficient head design, but in the end there's still a big displacement gap between an LS1 and a Ford 4.6
Tim
'01 GTP: 3.3" pulley, Headers, 3" Exhaust, Straight Pipe, Intense Air to Water Intercooler. Pictures
Old Ride: 95 Mystique LS V6 ATX: Pictures
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