Lexus 183ci specs: 87.5 x 83 mm (3.4449 x 3.2677 in) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 183 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.445" |
| Stroke | 3.268" |
| Advertised power | 188–245 hp |
| Years | 1994–2006 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 1MZ-FE | 183 ci | 3.4449" × 3.2677" | — | 188–220 |
| 3GR-FSE | 183 ci | 3.4449" × 3.2677" | — | 245 |
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.