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Studebaker 226ci (1948) specs: 226 ci 6-cylinder, 3.313 x 4.375 in (84.1 x 111.1 mm) bore and stroke, 6.5:1 compression. Rated 94 hp, 1948.
The Studebaker 226ci (1948) is undersquare — the 4.375" stroke exceeds the 3.3125" bore by 24.3% — a layout that trades peak RPM for leverage and torque low in the range. With a 4.375" stroke, mean piston speed reaches 4,000 ft/min at only 5,500 RPM — the practical ceiling for a production bottom end — which is why a stroke this long makes its power low and runs out of safe revs early. Each of the 6 cylinders displaces 37.7 ci (617 cc).
6.5:1 is low by modern standards and generally happy on regular pump fuel.
| Displacement | 226 ci |
|---|---|
| Bore | 3.3125" |
| Stroke | 4.375" |
| Cylinders | 6 |
| Configuration | I6 |
| Compression ratio | 6.5:1 |
| Bore/stroke ratio | 0.757 |
| Fuel type | gas |
|---|---|
| Advertised HP | 94 hp |
| Years | 1948 |
| Bore/stroke character | 0.757 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 4,375 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 37.7 ci |
| Static compression | 6.5:1 — low by modern standards, generally happy on regular pump fuel |
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1 factory vehicle, 1948. Each year opens that model's engine table.