Bore, stroke, displacement and compression for all 4 Lincoln InTech engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 238–330 ci |
|---|---|
| Cylinders | 8 |
| Bore | 3.386–3.551" |
| Stroke | 3.307–4.165" |
| Compression | 9.5–10.5:1 |
| Advertised power | 252–302 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 54 Intech Dohc V8 | 330 ci | 3.5512" × 4.1654" | 9.5:1 | 300 |
| InTech · 3.551" × 3.543" · 9.8:1 | 281 ci | 3.5512" × 3.5433" | 9.8:1 | 260–280 |
| InTech · 3.551" × 3.543" · 10:1 | 281 ci | 3.5512" × 3.5433" | 10:1 | 280–302 |
| InTech · 3.386" × 3.307" · 10.5:1 | 238 ci | 3.3858" × 3.3071" | 10.5:1 | 252–280 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
1 of 4 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.