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Oldsmobile LX5 specs: 212 ci (3.5L) 6-cylinder, 3.524 x 3.622 in (89.5 x 92 mm) bore and stroke, 9.3:1 compression. Rated 215 hp, 1999–2002.
The Oldsmobile 212ci (LX5) is close to square: 3.5236" bore against 3.622" stroke, within 2.7%, which splits the difference between a high-revving layout and a torque layout. The 3.622" stroke puts mean piston speed at 4,000 ft/min around 6,650 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 35.3 ci (579 cc).
9.3:1 is low by modern standards and generally happy on regular pump fuel.
4 factory variants share these dimensions, rated at 215 hp across 1999–2002.
| Displacement | 212 ci / 3.5 L |
|---|---|
| Bore | 3.5236" * |
| Stroke | 3.622" * |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 9.3:1 * |
| Bore/stroke ratio | 0.973 |
* Bore, stroke and compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 215 hp |
| Years | 1999–2002 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1999 | LX5 net | 215 @ 5600 | 230 lb-ft @ 4400 | — |
| 2000 | LX5 net | 215 @ 5600 | 230 lb-ft @ 4400 | — |
| 2001 | LX5 net | 215 @ 5600 | 230 lb-ft @ 4400 | — |
| 2002 | LX5 net | 215 @ 5600 | 230 lb-ft @ 4400 | — |
Factory specification sheet.
| Bore/stroke character | 0.973 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,622 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 35.3 ci |
| Static compression | 9.3:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1999 | 215 hp | LX5 |
| 2000 | 215 hp | LX5 |
| 2001 | 215 hp | LX5 |
| 2002 | 215 hp | LX5 |
2 factory vehicles, 1999–2002. Each year opens that model's engine table.