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International V-392 specs: 392 ci 8-cylinder, 4.125 x 3.656 in (104.8 x 92.9 mm) bore and stroke, 8.02:1 compression. Built 1969–1975.
The International V-392 is oversquare — the 4.125" bore exceeds the 3.6562" stroke by 12.8% — a layout that favors airflow and RPM over leverage at the crank. The 3.6562" stroke puts mean piston speed at 4,000 ft/min around 6,550 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 49.0 ci (803 cc).
8.02:1 is low by modern standards and generally happy on regular pump fuel.
5 factory variants share these dimensions across 1969–1975.
| Displacement | 392 ci |
|---|---|
| Bore | 4.125" |
| Stroke | 3.6562" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 8.02:1 |
| Bore/stroke ratio | 1.128 |
| Fuel type | gas |
|---|---|
| Years | 1969–1975 |
| Bore/stroke character | 1.128 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,656 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 49.0 ci |
| Static compression | 8.02:1 — 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 |
|---|---|---|
| 1969 | — | V-392 |
| 1970 | — | V-392 |
| 1971 | — | V-392 |
| 1974 | — | V-392 |
| 1975 | — | V-392 |
2 factory vehicles, 1969–1975. Each year opens that model's engine table.