Lot 2400-SCT: 2007 Ford Mustang Roush 427R
- 57k mi
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Location: Peoria, Arizona, USA
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Originality: Original & Highly Originalinfo
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Transmission: Manual
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Handedness: LHD
- There are 4 Ford Mustang Roush 427R - S-197 I - 5th Gen (2005 to 2009) for sale right now.
Vehicle Details
what’s the difference between a roush 427r and a regular mustang gt?
The Roush 427R is a substantial performance upgrade over a regular 2007 Mustang GT! Here are the key differences:
🔋 Power & Performance
| Spec | Mustang GT | Roush 427R | Difference |
|---|---|---|---|
| Horsepower | 300 hp | ~435 hp | +135 hp (+45%) |
| Torque | 320 lb-ft | ~385 lb-ft | +65 lb-ft |
| Engine | 4.6L naturally aspirated V8 | 4.6L supercharged V8 (Eaton M90) | Forced induction |
| 0-60 mph | ~5.1 seconds | ~4.6 seconds | Significantly quicker |
The 427R gets its name from its approximate horsepower output—it’s basically a factory-supercharged Mustang with a Roots-style blower that pumps in extra air for serious muscle.
đźš— Chassis & Styling
- Roush 427R includes unique bodywork with aggressive styling, hood scoop, Roush badging, and premium interior touches like embroidered seats
- The 427R was built as a post-title conversion by Roush Performance—meaning these started life as regular GTs before being shipped to Roush for transformation
đź’° Market Value
Based on Classic.com data:
- S-197 I Mustang GT (2005-2009): Averages around $21,200 (range $5K–$89K)
- Roush 427R (S-197 I): Averages around $30,600 (range $15K–$60K)
The 427R commands a significant premium (~$9K average) for that supercharged performance and limited production numbers—only 1,025 were built for 2007.
Bottom Line
Think of the 427R as a “factory tuner car” that bridges the gap between a stock GT and the wild Shelby GT500. It’s the most accessible way to get supercharged V8 power in the S-197 generation with full warranty-backed engineering from a legendary name in Mustang performance.
Want to browse similar supercharged Mustangs? Check out the Roush 427R market or the regular S-197 I GT market for comparison!