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Buick 233ci (1936) specs: 233 ci 8-cylinder, 3.094 x 3.875 in (78.6 x 98.4 mm) bore and stroke. Rated 93 hp, 1936. Used in the Buick Special.
The Buick 233ci (1936) is undersquare — the 3.875" stroke exceeds the 3.0938" bore by 20.2% — a layout that trades peak RPM for leverage and torque low in the range. The 3.875" stroke puts mean piston speed at 4,000 ft/min around 6,200 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 29.1 ci (477 cc).
| Displacement | 233 ci |
|---|---|
| Bore | 3.0938" |
| Stroke | 3.875" |
| Cylinders | 8 |
| Configuration | V8 |
| Bore/stroke ratio | 0.798 |
| Fuel type | gas |
|---|---|
| Advertised HP | 93 hp |
| Years | 1936 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1936 | gross | 93 * | — | — |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 0.798 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,875 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 29.1 ci |
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1 factory vehicle, 1936. Each year opens that model's engine table.