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Volkswagen GD/GE specs: 2.0L (120 ci) 4-cylinder, 94 x 71 mm (3.7008 x 2.7953 in) bore and stroke. Rated 67 hp, 1976–1979.
The Volkswagen GD/GE is oversquare — the 3.7008" bore exceeds the 2.7953" stroke by 32.4% — a layout that favors airflow and RPM over leverage at the crank. The 2.7953" stroke does not reach 4,000 ft/min of mean piston speed until about 8,600 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 30.0 ci (492 cc).
It is one of 5 engines in the Volkswagen 120ci family, all of them 120 ci — the differences between them are in compression, heads and rating, not displacement. 4 factory variants share these dimensions, rated at 67 hp across 1976–1979.
| Displacement | 120 ci / 2 L |
|---|---|
| Bore | 3.7008" * |
| Stroke | 2.7953" * |
| Cylinders | 4 |
| Bore/stroke ratio | 1.324 |
* Bore and stroke from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 67 hp |
| Years | 1976–1979 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1976 | GD/GE net | 67 @ 4200 | — | — |
Factory specification sheet.
| Bore/stroke character | 1.324 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,795 ft/min — conservative for a street engine |
| Displacement per cylinder | 30.0 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 |
|---|---|---|
| 1976 | 67 hp | GD/GE |
| 1977 | 67 hp | GD/GE |
| 1978 | 67 hp | GD/GE |
| 1979 | 67 hp | GD/GE |
1 factory vehicle, 1976–1979. Each year opens that model's engine table.