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Nash 184ci (1950–1954) specs: 184 ci 6-cylinder, 3.125 x 4.00 in (79.4 x 101.6 mm) bore and stroke. Rated 85 hp, 1950–1954. Used in the Nash Nash.
The Nash 184ci (1950–1954) is undersquare — the 4" stroke exceeds the 3.125" bore by 21.9% — a layout that trades peak RPM for leverage and torque low in the range. The 4" stroke puts mean piston speed at 4,000 ft/min around 6,000 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 30.7 ci (503 cc).
4 factory variants share these dimensions, rated at 85 hp across 1950–1954.
| Displacement | 184 ci |
|---|---|
| Bore | 3.125" |
| Stroke | 4" |
| Cylinders | 6 |
| Configuration | I6 |
| Compression ratio | 7–7.25:1 (published figures vary) |
| Bore/stroke ratio | 0.781 |
| Fuel type | gas |
|---|---|
| Advertised HP | 85 hp |
| Years | 1950–1954 |
| Bore/stroke character | 0.781 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 4,000 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.7 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 |
|---|---|---|
| 1950 | — | — |
| 1951 | 85 hp | — |
| 1953 | 85 hp | — |
| 1954 | 85 hp | — |
1 factory vehicle, 1950–1954. Each year opens that model's engine table.