Ford Power Stroke 6.7 specs: 3.90 x 4.25 in (99.1 x 108 mm) bore and stroke, shared by all 3 versions. Displacement, compression and factory ratings.
| Displacement | 406 ci |
|---|---|
| Cylinders | 8 |
| Bore | 3.900" |
| Stroke | 4.250" |
| Compression | 16.2:1 |
| Advertised power | 390–500 hp |
| Years | 2011–2026 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Power Stroke 6.7 · 3.900" × 4.250" · 16.2:1 | 406 ci | 3.9" × 4.25" | 16.2:1 | 390–500 |
| 6.7L Power Stroke | 406 ci | 3.9" × 4.25" | — | 400–475 |
| 6.7L Power Stroke High Output | 406 ci | 3.9" × 4.25" | — | 500 |
All are undersquare — stroke larger than bore, favouring torque low in the range.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.