Ferrari 355 GTS/GTB/Spider All 3.5 V8 380hp

Real standard and upgraded performance figures for the 3.5 V8 380hp engine in the Ferrari 355 GTS/GTB/Spider All.

These are real standard and Stage 1 (and where available, Stage 2) figures for the Ferrari 355 GTS/GTB/Spider All 3.5 V8 380hp — not a generic estimate for the model range.

Horsepower (HP)Torque (Nm)
Standard380360
Stage 1400388
Stage 2410402
Make
Ferrari
Model
355 GTS/GTB/Spider
Generation
All
Engine
3.5 V8 380hp
Fuel type
petrol

Frequently asked questions

Is Stage 1 tuning safe for the Ferrari 355 GTS/GTB/Spider All 3.5 V8 380hp?

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 3.5 V8 380hp make after tuning?

Standard output is 380 HP / 360 Nm; Stage 1 on this engine typically reaches 400 HP / 388 Nm. Exact results can vary slightly with fuel quality and vehicle condition.

How long does a Ferrari 355 GTS/GTB/Spider All 3.5 V8 380hp 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 3.5 V8 380hp 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.