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Oldsmobile LN7 specs: 181 ci (3.0L) 6-cylinder. Rated 125 hp, 1985–1988. Used in the Oldsmobile Cutlass. Rod ratio and piston speed worked out.
Each of the 6 cylinders displaces 30.2 ci (494 cc).
It is one of 2 engines in the Oldsmobile 181ci family, all of them 181 ci — the differences between them are in compression, heads and rating, not displacement. 4 factory variants share these dimensions, rated at 125 hp across 1985–1988.
| Displacement | 181 ci / 3 L |
|---|---|
| Cylinders | 6 |
| Configuration | V6 |
| Fuel type | gas |
|---|---|
| Advertised HP | 125 hp |
| Years | 1985–1988 |
| Displacement per cylinder | 30.2 ci |
|---|
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 |
|---|---|---|
| 1985 | 125 hp | LN7 |
| 1986 | 125 hp | LN7 |
| 1987 | 125 hp | LN7 |
| 1988 | 125 hp | LN7 |