Engine Specifications, expressed in inches
Warning, I have tried to check this information out; however I certainly wouldn't
start building an engine, or try mixing and matching parts based on this info.
| Displacement | Bore | Stroke | Main Brg | Rod Big End Brg | Wrist Pin | Rod C/L to C/L |
| 215CI BOP | 3.50 | 2.8000 | 2.3000 | 2.0 | .8750 | 5.660 |
| 300CI Buick | 3.75 | 3.3600 | 2.5000 | 2.0 | .9390 | 5.960 |
| 3.5L Rover | 3.50 | 2.8000 | 2.2993 | 2.0 | .8750 | 5.660 |
| 3.9L Rover | 3.70 1 | 2.8000 1 | 2.2993 | 2.0 | .8750 | 5.660 |
| 4.2L Rover | 3.70 | 3.0000 1,2 | 2.2993 | 2.0 | .8750 | 5.660 |
| 4.4L Rover | 3.50 | 3.5000 | 2.5495 | 2.0 | .8750 | 6.250 |
| 4.0L Rover | 3.70 | 2.8000 | 2.500 | 2.185 | .9449 | 6.111 |
| 4.6L Rover | 3.70 | 3.2283 | 2.500 | 2.185 | .9449 | 5.897 |
| 1 The Rover Engine, 2nd
edition, by David Hardcastle 2Early cranks had a stroke of 3.0315 |