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Ford E-475 specs: 410 ci 8-cylinder, 4.203 x 3.70 in (106.8 x 94 mm) bore and stroke, 10.5:1 compression. Rated 345 hp, 1958. Used in the Edsel Edsel.
The Ford E-475 is oversquare — the 4.2031" bore exceeds the 3.7" stroke by 13.6% — a layout that favors airflow and RPM over leverage at the crank. The 3.7" stroke puts mean piston speed at 4,000 ft/min around 6,500 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 51.3 ci (840 cc).
10.5:1 is in the range that usually runs on pump premium.
| Displacement | 410 ci |
|---|---|
| Bore | 4.2031" |
| Stroke | 3.7" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 10.5:1 * |
| Bore/stroke ratio | 1.136 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Firing order | 1-5-4-2-6-3-7-8 |
| Advertised HP | 345 hp |
| Years | 1958 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1958 | gross | 345 @ 4600 * | 475 lb-ft @ 2900 * | 10.5:1 * |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 1.136 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,700 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 51.3 ci |
| Static compression | 10.5:1 — in the range that usually runs on pump premium |
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1 factory vehicle, 1958. Each year opens that model's engine table.