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Fiat 132 A1 040 specs: 107 ci 4-cylinder, 84 x 79.2 mm (3.3071 x 3.1181 in) bore and stroke, 8:1 compression. Rated 86 hp, 1975–1978.
The Fiat 132 A1 040 is oversquare — the 3.3071" bore exceeds the 3.1181" stroke by 6.1% — a layout that favors airflow and RPM over leverage at the crank. The 3.1181" stroke does not reach 4,000 ft/min of mean piston speed until about 7,700 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 26.8 ci (438 cc).
8:1 is low by modern standards and generally happy on regular pump fuel.
4 factory variants share these dimensions, rated at 86 hp across 1975–1978.
| Displacement | 107 ci |
|---|---|
| Bore | 3.3071" |
| Stroke | 3.1181" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 8:1 |
| Bore/stroke ratio | 1.061 |
| Fuel type | gas |
|---|---|
| Advertised HP | 86 hp |
| Years | 1975–1978 |
| Bore/stroke character | 1.061 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,118 ft/min — conservative for a street engine |
| Displacement per cylinder | 26.8 ci |
| Static compression | 8:1 — 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 |
|---|---|---|
| 1975 | 86 hp | 132 A1 040 |
| 1976 | 86 hp | 132 A1 040 |
| 1977 | 86 hp | 132 A1 040 |
| 1978 | 86 hp | 132 A1 040 |
1 factory vehicle, 1975–1978. Each year opens that model's engine table.