Bore, stroke, displacement and compression for all 9 Nissan L-series engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 146–168 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.268–3.386" |
| Stroke | 2.902–3.110" |
| Compression | 7.4–8.8:1 |
| Advertised power | 135–180 hp |
| Years | 1970–1983 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| L28E | 168 ci | 3.3858" × 3.1102" | — | — |
| L28ET | 168 ci | 3.3858" × 3.1102" | 7.4:1 | — |
| L28E | 168 ci | 3.3858" × 3.1102" | 8.3:1 | 135–149 |
| L28E | 168 ci | 3.3858" × 3.1102" | 8.8:1 | 145 |
| L28ET | 168 ci | 3.3858" × 3.1102" | 7.4:1 | 180 |
| L26 | 156.5 ci | 3.2677" × 3.1102" | — | — |
| L26 | 156.5 ci | 3.2677" × 3.1102" | — | 139 |
| L24 | 146 ci | 3.2677" × 2.9016" | — | — |
| L24 | 146 ci | 3.2677" × 2.9016" | — | 150 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
All are oversquare — bore larger than stroke, which favours revs over low-end torque.
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.