GMC Sierra 1999 - 2007 6.0 V8 360hp
Real standard and upgraded performance figures for the 6.0 V8 360hp engine in the GMC Sierra 1999 - 2007.
This page covers the 6.0 V8 360hp as fitted to the GMC Sierra 1999 - 2007 — the figures below reflect that specific engine, not the model as a whole.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 360 | 525 |
| Stage 1 | 380 | 545 |
| Stage 2 | 390 | 555 |
- Make
- GMC
- Model
- Sierra
- Generation
- 1999 - 2007
- Engine
- 6.0 V8 360hp
- Fuel type
- petrol
Frequently asked questions
Is Stage 1 tuning safe for the GMC Sierra 1999 - 2007 6.0 V8 360hp?
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 6.0 V8 360hp make after tuning?
Standard output is 360 HP / 525 Nm; Stage 1 on this engine typically reaches 380 HP / 545 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a GMC Sierra 1999 - 2007 6.0 V8 360hp 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 6.0 V8 360hp 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.