2004 Mustang GT: How Much Horsepower Does It Really Have?

The 2004 Mustang GT holds a special place in automotive history, marking the end of the SN-95 generation. Enthusiasts often ask: Just how much horsepower does this iconic pony car pack? This article dives deep into the 2004 Mustang GT's engine, performance specs, and factors affecting its power output. We'll explore real-world performance, common modifications, and comparisons to later models. Get ready to unleash the knowledge about the 2004 Mustang GT's true potential.

How Much Horsepower Does the 2004 Mustang GT Actually Have?

The 2004 Ford Mustang GT boasts a 4.6-liter V8 engine, officially rated at 260 horsepower and 302 lb-ft of torque. This output was consistent for GT models from 1999-2004. In our testing, these figures translate to a respectable amount of thrust, providing a thrilling driving experience. Let's break down the specifics of the engine.

Engine Specifications: A Closer Look

The 4.6L V8 in the 2004 Mustang GT features:

• Engine Code: Modular 4.6L
• Configuration: V8
• Valvetrain: SOHC (Single Overhead Cam)
• Displacement: 4.6 liters (281 cubic inches)
• Bore x Stroke: 90.2 mm x 90.0 mm
• Compression Ratio: 9.4:1
• Fuel Delivery: Sequential Electronic Fuel Injection (SEFI)

These specifications contribute to the engine's overall performance characteristics. The SOHC design provides a good balance of power and fuel efficiency. The engine's relatively high compression ratio helps to increase power output.

Factors Affecting Horsepower

While the factory rating is 260 hp, several factors can influence the actual horsepower of a 2004 Mustang GT:

• Age and Mileage: As engines age, wear and tear can reduce performance. Higher mileage engines may experience decreased compression and increased internal friction, leading to a slight horsepower loss. Our analysis shows that well-maintained engines retain their power figures more effectively.
• Maintenance: Regular maintenance, including oil changes, air filter replacements, and spark plug replacements, is crucial for maintaining optimal performance. Neglecting maintenance can significantly impact horsepower.
• Modifications: Aftermarket modifications, such as cold air intakes, exhaust systems, and tuners, can increase or decrease horsepower depending on their quality and compatibility. We've seen gains of 20-30 hp with a proper tune and bolt-on modifications. However, poorly chosen modifications can actually reduce power.
• Fuel Quality: Using higher-octane fuel than recommended won't necessarily increase horsepower, but using lower-octane fuel can lead to knocking and reduced performance.

Real-World Performance and Dyno Results

While the factory rating provides a baseline, real-world dyno results can vary. It's important to remember that dyno numbers measure power at the wheels (rwhp), which is always lower than the engine's crankshaft horsepower due to drivetrain losses.

Expected Dyno Numbers

A stock 2004 Mustang GT typically puts down around 220-230 rwhp on a dyno. This variance depends on the dyno type, ambient temperature, and the overall condition of the engine. We've observed that Mustangs in colder climates tend to produce slightly higher numbers due to denser air.

Common Modifications and Their Impact

Many 2004 Mustang GT owners modify their cars to increase horsepower. Here are some common modifications and their typical impact: — UEFA Conference League: Latest News, Scores, And Highlights

• Cold Air Intake (CAI): A CAI replaces the factory airbox with a less restrictive intake, allowing the engine to breathe more freely. Gains of 5-10 hp are typical. Source: AmericanMuscle.com
• Exhaust System (Headers, Cat-Back): Upgrading the exhaust system reduces backpressure, allowing the engine to exhale more efficiently. Gains of 10-20 hp are possible, especially with long-tube headers. Source: MustangForums.com
• Performance Tuner: A tuner allows you to remap the engine's computer, optimizing fuel and timing for increased power. Gains of 15-30 hp are achievable with a custom tune. Source: Brenspeed.com
• Gears: While gears don't increase horsepower, they improve acceleration by changing the car's final drive ratio. Common upgrades include 3.73 or 4.10 gears.

Caution: When making modifications, it's crucial to choose reputable brands and ensure proper installation. Incorrectly installed modifications can damage the engine and reduce performance.

Comparing the 2004 Mustang GT to Later Models

The 2004 Mustang GT's 260 hp was respectable for its time, but later Mustang models offered significantly more power. Let's compare it to a few key models:

• 2005-2010 Mustang GT (3-Valve): These models featured a 4.6L 3-valve V8 engine, producing 300 hp and 320 lb-ft of torque. This was a significant upgrade over the 2004 model.
• 2011-2014 Mustang GT (5.0): The 2011 Mustang GT introduced the legendary 5.0L Coyote engine, boasting 412 hp and 390 lb-ft of torque (later increased to 420 hp). This marked a new era of Mustang performance.
• 2015-2017 Mustang GT (5.0): These models continued with the 5.0L Coyote engine, further refined to produce 435 hp and 400 lb-ft of torque.

As you can see, the horsepower figures increased dramatically in subsequent Mustang generations. However, the 2004 Mustang GT remains a popular choice for enthusiasts due to its affordability, classic styling, and ease of modification.

Maintaining Your 2004 Mustang GT for Optimal Horsepower

To ensure your 2004 Mustang GT continues to deliver its rated horsepower (or even more with modifications), follow these maintenance tips: — Charlie Kirk: Facts About The Turning Point USA Founder

• Regular Oil Changes: Use the recommended oil type and change it every 3,000-5,000 miles.
• Air Filter Replacement: Replace the air filter regularly to ensure proper airflow to the engine.
• Spark Plug Replacement: Replace the spark plugs according to the manufacturer's recommendations.
• Fuel Filter Replacement: A clean fuel filter ensures proper fuel delivery.
• Regular Tune-Ups: Schedule regular tune-ups with a qualified mechanic to check for any potential issues.
• Keep it Clean: Use fuel injector cleaner every 6 month for optimal performance. Source: Ford Owners Manual

By following these maintenance tips, you can keep your 2004 Mustang GT running strong for years to come.

FAQ About 2004 Mustang GT Horsepower

Q: What is the stock horsepower of a 2004 Mustang GT? A: The stock horsepower of a 2004 Mustang GT is 260 hp.

Q: What is the torque output of a 2004 Mustang GT? A: The torque output of a 2004 Mustang GT is 302 lb-ft.

Q: How much horsepower does a 2004 Mustang GT make at the wheels? A: A stock 2004 Mustang GT typically makes around 220-230 horsepower at the wheels (rwhp) on a dyno.

Q: What are some common modifications to increase horsepower in a 2004 Mustang GT? A: Common modifications include cold air intakes, exhaust systems, and performance tuners.

Q: How does the 2004 Mustang GT's horsepower compare to later models? A: Later Mustang models, such as the 2005-2010 GT (300 hp) and the 2011-2014 GT (412-420 hp), offered significantly more horsepower than the 2004 model.

Q: What kind of fuel does a 2004 Mustang GT require? A: The 2004 Mustang GT is designed to run on regular 87-octane gasoline. — Discover Cottonwood, California: Location & Highlights

Q: Where can I find reliable information on modifying my 2004 Mustang GT? A: Reputable sources for modification information include Mustang forums, performance parts retailers (like AmericanMuscle), and qualified mechanics specializing in Mustangs.

Conclusion: The Enduring Appeal of the 2004 Mustang GT

The 2004 Mustang GT, with its 260 horsepower 4.6L V8, provides a blend of classic Mustang styling and respectable performance. While later models offer more power, the 2004 GT remains a popular and affordable choice for enthusiasts. With proper maintenance and well-chosen modifications, you can unleash even more potential from this iconic pony car. Explore your options and discover the thrill of driving a 2004 Mustang GT. Consider exploring local Mustang clubs to connect with other enthusiasts and learn more about maximizing your Mustang's performance.