I just ran into some luck, and got this car. I'm just looking for some simple answers. I hear these cars make stupid power w/ little effort. So im wondering how much I could gain from a pulley, intake, exhaust, and a tune? Also, does anyone know how much power these cars really make stock? I hear 390, but i keep hearing that its underrated. Thanks!!
The guys over at svt performance.com answered the same question for me. Stock 03/04 Cobra are being dyno'ed at 405-415 hp. With the mods your talking about you'll be in the 475-500 to the wheels. I'm planning on doing the same mods myself!
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2004 Mystic Cobra Vert Proud Member of the Mid-Atlantic Cobra Association Sig Courtesy of Durr!
The wheels are being dyno'd at 360-375 range. I'll let you know shortly. I have some bolt-ons on order, but before there put on I'm getting it dyno'd first. I want to see my numbers from the start till I'm done modding it!
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2004 Mystic Cobra Vert Proud Member of the Mid-Atlantic Cobra Association Sig Courtesy of Durr!
Most will put on 360 to 380 some seam to be a little higher. Mine was 387.7 HP with only a K&N air filter (not FIPK) W/ 373.5 Torque. After my mods i had 457.2 Hp with 468.6 Torque
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04' Cobra Bassani X-pipe Magnaflow SS catback Eibach Springs Reichard racing 2.8 pulley Steeda Idler SCT tune K&N CAI Fluidyne H/E
Those are great numbers stock .....your 03/04 Cobras are basically delivering the claimed horsepower to the rear wheels. With the 15% loss through the tranny, your motor numbers must be well over 400!
the numbers were higher than i thought they would be but the air filter gave it a little extra so i was pretty close to the normal range, and these car are very underrated. Im gonna get my SC ported and a lower pulley and get close to 500 rwhp
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04' Cobra Bassani X-pipe Magnaflow SS catback Eibach Springs Reichard racing 2.8 pulley Steeda Idler SCT tune K&N CAI Fluidyne H/E
You should have about 440-460 to the wheels after those mods. Don't forget to upgrade the heat exchanger and get a good tune or you will be buying a motor soon.
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03 Cobra-SOLD! Tuned by RWTD 500rwhp 486 torque
New Ride: 03 Z06 Corvette Lunati 24/24 LSA 112 Cam Ported Heads Long tube Headers Breathless Ram Air U/D Pulley Tuned by Aaron Scott@South GA Corvette 442rwhp 402 torque 3000lb. Car
You should have about 440-460 to the wheels after those mods. Don't forget to upgrade the heat exchanger and get a good tune or you will be buying a motor soon.
Ok will do! I see you have a stage 4 ported eaton. I am really curious to know why you decided to port the eaton instead of getting a new blower?
Team MF Member #466 Posts: 2084
Joined: 6/16/2006 Status: offline
Porting the eaton vs. the whipple or KB is a huge difference in price. But, you still wont get as good as performance with a ported Eaton vs. the other two. With a few bolt-ons + a ported eaton and pulley, you could be right at or over 500 rwhp. With the 2.3L Whipple for example with a 3.5 pulley and a few bolt-ons will be over 520 rwph easy.
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.....your 03/04 Cobras are basically delivering the claimed horsepower to the rear wheels. With the 15% loss through the tranny, your motor numbers must be well over 400!
