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Toyota 3T-C specs: 1.8L (108 ci) 4-cylinder, 85 x 78 mm (3.3465 x 3.0709 in) bore and stroke. Rated 75 hp, 1980–1982. Used in the Toyota Corolla.
The Toyota 3T-C is oversquare — the 3.3465" bore exceeds the 3.0709" stroke by 9.0% — a layout that favors airflow and RPM over leverage at the crank. The 3.0709" stroke does not reach 4,000 ft/min of mean piston speed until about 7,800 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 27.0 ci (442 cc).
3 factory variants share these dimensions, rated at 75 hp across 1980–1982.
| Displacement | 108 ci / 1.8 L |
|---|---|
| Bore | 3.3465" |
| Stroke | 3.0709" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 1.09 |
| Fuel type | gas |
|---|---|
| Advertised HP | 75 hp |
| Years | 1980–1982 |
| Bore/stroke character | 1.090 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,071 ft/min — conservative for a street engine |
| Displacement per cylinder | 27.0 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 |
|---|---|---|
| 1980 | 75 hp | 3T-C |
| 1981 | 75 hp | 3T-C |
| 1982 | 75 hp | 3T-C |
1 factory vehicle, 1980–1982. Each year opens that model's engine table.