How much horsepower does a stage 3 SRT-4 have?
There isn’t a single official horsepower figure for a Stage 3 SRT-4. Power depends on the exact kit, tune, boost level, and whether the engine is built to handle high boost. In practice, Stage 3 setups push the 2.4-liter engine far beyond stock, with a wide range of outcomes depending on fuel and hardware.
What Stage 3 means for the SRT-4
Stage 3 is a designation used by tuners to describe a high-boost, heavily engineered upgrade path beyond the factory options. For the SRT-4, that usually means a substantial turbo upgrade, improved fueling, enhanced cooling, stronger internals, and a calibrated engine-management solution. The goal is to achieve significantly more power while maintaining drivability for street and occasional track use, though the exact results depend on the build quality and fuel strategy.
Key components typically included
Below is a snapshot of components you’ll commonly find in a Stage 3 SRT-4 build. The list reflects typical upgrades rather than a fixed package, since exact parts vary by tuner and intended use.
- Upgraded turbocharger or turbo kit (larger unit or built turbo system)
- Intercooler and piping upgrade to reduce intake temps
- High-flow intake components and exhaust system (turbo-back)
- Enhanced fueling: larger injectors and upgraded fuel pump or fuel delivery system
- Engine management solution: ECU refl ash or standalone ECU for precise tuning
- Strengthened bottom end and internals (often forged pistons/rods, upgraded head studs)
- Upgraded clutch/transmission components to handle increased torque
- Improved cooling, oil cooling, and sometimes an upgraded radiator or oil cooler
These components collectively enable higher boost and safer operation, but they also demand careful calibration and reliable supporting systems to avoid reliability issues.
Power outcomes by configuration
The horsepower you see from a Stage 3 SRT-4 varies with fuel, tuning, and whether the engine is built to handle the boost. The following ranges reflect common real-world outcomes across typical Stage 3 setups.
- Streetable Stage 3 on pump gasoline: approximately 350–500 hp at the crank. This range prioritizes daily drivability and reliability while still delivering a noticeable performance increase over stock.
- Race-gas or tuned Stage 3 with a built bottom end: roughly 450–650 hp at the crank. With race fuel and robust internals, power targets rise substantially, often used for track days or weekend events.
- Extreme Stage 3 builds or drag-focused setups: 650–750+ hp at the crank. These configurations usually feature the largest aftermarket turbos, extensive fuel and cooling upgrades, and a very strict tuning regime; they are typically not daily-driver friendly.
Keep in mind that wheel horsepower will be lower than crank horsepower due to drivetrain losses, and actual results depend on the specific hardware, tuning, and conditions. Proper maintenance, quality parts, and a professional tune are essential for reliability at higher power levels.
Practical takeaways
For anyone considering a Stage 3 upgrade, plan for more than just horsepower. Supporting upgrades—reliable fueling, cooling, clutch, and lubrication—are critical to prevent failures at high boost. You should also consider the intended use, maintenance costs, and the potential impact on daily drivability when weighing different Stage 3 configurations.
Summary
A Stage 3 SRT-4 does not have a fixed horsepower rating. Real-world figures range from about 350–500 hp at the crank for streetable pump-gas setups, up to 450–650 hp or more with race fuel and a built bottom end. Extreme builds can exceed 700 hp, but often require substantial supporting upgrades and are less practical for daily use. The exact number depends on the tuner, parts chosen, fuel strategy, and whether the engine internals are upgraded to handle the boost.
How much horsepower does a SRT-4 have?
The horsepower for an SRT-4 varies by model year and factory options, but the 2003 model has 200 hp, while the 2004 and 2005 models have 230 hp and 225 hp respectively, although some sources cite the 2003 at 215 hp. The horsepower can be significantly increased with aftermarket Mopar Stage kits, with the Stage 3 kit reaching 310 hp and even more on higher octane fuel.
Factory horsepower by model year
- 2003 Dodge Neon SRT-4: Officially rated at 200 hp, though some sources and dyno tests indicate higher figures around 215 hp.
- 2004 Dodge Neon SRT-4: 225 hp.
- 2005 Dodge Neon SRT-4: 230 hp.
Aftermarket performance upgrades
- Mopar Stage 1: An upgrade that can add around 10 hp.
- Mopar Stage 2: This kit boosts horsepower to approximately 265 hp.
- Mopar Stage 3: The most aggressive kit, which includes a different turbocharger and fuel pump, can increase power to 310 hp, or even 355 hp when using 100+ octane fuel.
You can watch this video to see a review of a modified SRT-4 with a big turbo, which has significantly more horsepower than a stock model: 54sShooting CarsYouTube · Aug 29, 2025
How much horsepower does a SRT-4 Stage 3 have?
Dodge SRT4 Stage 3. Looking for a modern muscle car alternative to the new Ford Mustang GT and Pontiac GTO? You'll need power numbers like 355 horsepower, 365 lb-ft of torque, and a price under $30,000 to compete.
How much horsepower does stage 3 add?
Typically, a stage 3 tune can result in a horsepower increase of anywhere from 20% to 40% over the stock figures. For some cars, this might mean an additional 50 HP, while for others, it could mean an increase of 100 HP or more.
How much horsepower does a 2005 Dodge Neon SRT4 Stage 2 have?
The Stage 2 kit used even larger fuel injectors (682cc/min). A Stage 2 PCM increased part-throttle and WOT boost, while also employing a boost hold feature during WOT. Redline also increased from 6,200 rpm to 6,500 rpm. In total, the Stage 2 kit pumped things up to 265 hp for $1,599.
