* 4.0L V6: This engine had a torque rating in the range of 260 lb-ft. The exact number may vary slightly depending on the source.
* 4.6L V8 (in GT models): This produced approximately 315 lb-ft of torque. Again, the exact figure may vary slightly.
To get the precise torque figure, you need to specify which engine (V6 or V8) was in the specific 2009 Mustang you are asking about.