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Oldsmobile LV2 specs: 307 ci (5.0L) 8-cylinder, 3.80 x 3.35 in (96.5 x 85.1 mm) bore and stroke. Rated 140-155 hp, 1980–1988. Used in the Oldsmobile Cutlass.
The Oldsmobile Rocket (LV2) is oversquare — the 3.8" bore exceeds the 3.35" stroke by 13.4% — a layout that favors airflow and RPM over leverage at the crank. The 3.35" stroke does not reach 4,000 ft/min of mean piston speed until about 7,150 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 8 cylinders displaces 38.4 ci (629 cc).
It is one of 15 engines in the Rocket family, sitting between the 260 ci and 455 ci members. 8 factory variants share these dimensions, rated from 140 to 155 hp across 1980–1988.
| Displacement | 307 ci / 5 L |
|---|---|
| Bore | 3.8" |
| Stroke | 3.35" |
| Cylinders | 8 |
| Configuration | V8 |
| Bore/stroke ratio | 1.134 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 140–155 hp |
| Years | 1980–1988 |
| Bore/stroke character | 1.134 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,350 ft/min — conservative for a street engine |
| Displacement per cylinder | 38.4 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 |
|---|---|---|
| 1980 | 155 hp | LV2 |
| 1982 | 140 hp | LV2 |
| 1983 | 140 hp | LV2 |
| 1984 | 140 hp | LV2 |
| 1985 | 140 hp | LV2 |
| 1986 | 140 hp | LV2 |
| 1987 | 140 hp | LV2 |
| 1988 | 140 hp | LV2 |