Chevrolet Silverado 2007 - 2014 6.6 V8 397hp
Real standard and upgraded performance figures for the 6.6 V8 397hp engine in the Chevrolet Silverado 2007 - 2014.
Standard vs. upgraded performance for the Chevrolet Silverado 2007 - 2014 6.6 V8 397hp, based on real files we've processed for this exact engine.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 397 | 1037 |
| Stage 1 | 440 | 1100 |
| Stage 2 | 461 | 1131 |
- Make
- Chevrolet
- Model
- Silverado
- Generation
- 2007 - 2014
- Engine
- 6.6 V8 397hp
- Fuel type
- Petrol
Frequently asked questions
Is Stage 1 tuning safe for the Chevrolet Silverado 2007 - 2014 6.6 V8 397hp?
Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.
How much more power does the 6.6 V8 397hp make after tuning?
Standard output is 397 HP / 1037 Nm; Stage 1 on this engine typically reaches 440 HP / 1100 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a Chevrolet Silverado 2007 - 2014 6.6 V8 397hp remap take?
Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.
Can the 6.6 V8 397hp be reverted to its original file?
Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.