Loading... Please wait...


Background of 2003 Cobra Mustang

Posted by

The source for the following information is Ford Motor Company.Beginning with the original in 1993, every generation of the SVT Mustang Cobra has elevated its standard of performance. The 2003 SVT Mustang Cobra raises the bar yet again, this time increasing power output to a level never before achieved in a production Mustang. The addition of a Roots-type supercharger and water-to-air intercooler to the Cobra's 4.6-liter, DOHC 4-valve V-8 engine bumps output to 390 horsepower with 390 foot-pounds of torque. Additional enhancements for 2003 include exterior design alterations to the front and rear fascia, hood, rocker moldings and side scoops, as well as several changes to the interior appointments, including new multi-adjustable front seats trimmed in Nudo leather and Preferred suede.

The 2003 SVT Mustang Cobra's 4.6-liter, DOHC V-8 is equipped with an Eaton supercharger and new aluminum alloy cylinder heads that provide increased flow capabilities. The aluminum alloy 4-valve heads are new to the Cobra. They were chosen because they also provide greater flow capabilities, and help give increased low-end torque without sacrificing peak horsepower.

The Eaton Roots-type supercharger is the same model used on the SVT F-150 Lightning, with a cast aluminum case, machined aluminum internal rotors, and its own dedicated drive belt. The supercharger compresses intake air to a pressure of 7.5 to 8.0 pounds per square inch, and under the supercharger the compressed air passes through a water-to-air intercooler. This removes heat gained during compression to make a denser, more powerful compressed air charge.

To provide strength necessary for the substantially increased torque output, the new Cobra engine is built on a cast-iron block. This unit contains the carryover forged-steel crankshaft, which is fitted with new Manley forged H-beam connecting rods, forged pistons similar to those in the SVT F-150 Lightning, and an aluminum flywheel similar to the 2000 SVT Mustang Cobra R's.

The engine is mated to a TTC T-56 6-speed manual transmission. Behind that, an aluminum drive shaft with upgraded universal joints connects to the rear axle, which has a 3.55:1 gear ratio.

The Cobra's independent suspension system receives additional bracing necessary for increased loading due to the higher power output and larger tires. Changes include revised bushing, mount and spring rates. A new tubular cross-brace has been added, which attaches to the differential and is designed to stabilize the differential assembly under hard acceleration. Revised rear suspension geometry helps improve roll steer.

Exterior design changes distinguish the SVT Mustang Cobra from the regular production Mustang GT. The hood has been redesigned, and now has flow-through scoops that help vent hot air from the engine compartment. Both the hood and rear deck are made of lightweight composite materials.

Additional SVT Mustang Cobra standard features include a leather-wrapped steering wheel; leather boots for the shift and parking brake levers; tilt steering wheel; power windows, mirrors, door locks and trunk release; the SecuriLock passive anti-theft system; remote keyless entry; speed control; and a MACH 460 audio system with AM/FM stereo and an in-dash, six-disc CD player.

Production Numbers:
Cobra Coupe: 8,394
Cobra Convertible: 5,082

Available Engine: 4.6L DOHC V-8 390 hp
Type90° V8; cast iron block, aluminum heads, Eaton Gen. IV Roots-type supercharger, 8.0 psi Boost
ValvetrainDOHC, 4-valve/cyl.
Displacement [cc]4601
Bore & Stroke [mm]90.2 x 90.0
Compression Ratio8.5:1
Redline [rpm]6500
Max. Power [Bhp at rpm]390 at 6000
Max. Torque [lb-ft (Nm) at rpm]390 (529) at 3500

Available Exterior Colors


Oxford White ClearcoatNA
Ebony CleacoatNA
Torch Red ClearcoatNA
Sonic Blue CleacoatNA
Satin Silver Cleacoat MetallicNA
Mineral Grey Clearcoat MetallicNA
Zinc Yellow ClearcoatNA

Tires front275/40 ZR17
Tires rear275/40 ZR17

0 - 60 mph [secs]4.5
0 - 100 mph [secs]10.4
1/4 mile [secs at mph]12.9 at 111
Top Speed [mph]155 (electr. limited)
Lateral acceleration [g]0.90
Fuel Economy [City/Hwy in mpg]16 / 24
Retail Prices: Cobra Coupe: $34,750
Cobra Convertible: $38,995

Final drive3.55:1

FrontMacPherson struts; Bilstein monotube dampers, 29mm tubular stabilizer bar
RearMulti-Link; alu lower arms, Bilstein monotube shocks, coil springs, 29mm stabilizer bar


Rack & Pinion; Power-Assisted
Turning Radius [ft. (m)]20.8 (6.5)
Tires front275/40 ZR17
Tires rear275/40 ZR17

Front - Brakes

13.0 in (330mm) Brembo discs, 2-piston calipers
Rear - Brakes11.65 in. (296 mm) vented discs
70 - 0 mph [ft (m)]182 (56.6)
60 - 0 mph [ft (m)]NA

Trunk Space [cu ft.)]

Overall Length [in. (mm)]183.5 (4661)
Overall Width [in. (mm)]73.1 (1857)
Overall Height [in. (mm)]52.5 (1336)
Wheelbase [in. (mm)]101.3 (2573)
Track Front [in. (mm)]60.3 (1530)
Track Rear [in. (mm)]60.3 (1530)

Mark's Words of Wisdom: Be Cool

The factory Mustang intercooler has inherent design flaws causing only a portion of the hot incoming air to be cooled while passing through the factory intercooler. One of these flaws is fluid getting clogged inside the cooling tubes causing water to stagnate and become hot which results in a much hotter IAT2 Temperature.This is why [...]

Read More »

35 Ways to Increase Power, Performance, Handling, and more on your Ford Lightning

If there’s one single beautiful thing about the Gen 2 Lightning’s, it’s that you can just bolt on and go fast. Yeah yeah those stock Lightning’s are fast from the factory, but most of us want to take them to the next level. And whether you’re looking for 50 or 100 extra horsepower, [...]

Read More »

The new 2003-2004 Ford Mustang SVT Cobra - Unlimited Performance

Ford Mustang SVT cobra is one of the premium models made by Ford in Mustang Series. This car is owners delight. Ford Mustang Cobra is a heavy duty vehicle ideal for grand touring. “1993 Mustang Cobra” was the first vehicle produced by Ford’s Special Vehicle Team (popularly referred as SVT). Since then Mustang Cobra’s are [...]

Read More »

Performance Bolt on Parts for your Ford SVT Lightning Pickup

Ford’s affect on the performance truck community was two fold when it released the supercharged Ford F-150 Lightning.Lightning Force Performance (LFP) in Mont Belvieu, TX offers the SVT Lightning owner numerous products to improve all aspects of a Lightning’s Performance. So we procured a suitable test subject and pounded the dynamometer for some results.Said test [...]

Read More »

Experience The Power of Your Ford Mustang Shelby GT500

Hey, are you a GT500 enthusiast, who loves to ride with the maximum possible performance of your new head turning Mustang Supercar?If yes then you must have knowledge of supercharger boosting upgrades for your new 5.4L 4 Valve DOHC Supercharged Mustang Engine. Apart from the auto-engineering genius that comes stock from Ford, there are several other ways to give your new Shelby [...]

Read More »



Connect with us