| Cubic Inches | Bore (inches) | Stroke (inches) | Main bearing size (inches) |
| 265 | 3.75000 | 3.0000 | 3.000 |
| 287 | 3.75000 | 3.2500 | 2.500 |
| 301 | 4.00000 | 3.0000 | 3.000 |
| 317 | 3.93750 | 3.2500 | 2.500 |
| 326 | 3.72000 | 3.7500 | 3.000 |
| 347 | 3.93750 | 3.5625 | 2.623 |
| 350 | 3.88000 | 3.7500 | 3.000 |
| 370 | 4.06250 | 3.5625 | 2.623 |
| 389 | 4.06250 | 3.7500 | 3.000 |
| 400 | 4.12000 | 3.7500 | 3.000 |
| 421 | 4.09375 | 4.0000 | 3.250 |
| 428 | 4.12000 | 4.0000 | 3.250 |
| 455 | 4.15000 | 4.2100 | 3.250 |