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Lincoln J-code specs: 430 ci (7.0L) 8-cylinder, 4.358 x 3.598 in (110.7 x 91.4 mm) bore and stroke. Rated 350 hp, 1959–1960. Used in the Ford Thunderbird.
The Lincoln J-code is oversquare — the 4.3583" bore exceeds the 3.5984" stroke by 21.1% — a layout that favors airflow and RPM over leverage at the crank. The 3.5984" stroke puts mean piston speed at 4,000 ft/min around 6,650 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 53.8 ci (881 cc).
It is one of 3 engines in the MEL family, the smallest at 430 ci. 2 factory variants share these dimensions, rated at 350 hp across 1959–1960.
| Displacement | 430 ci / 7 L |
|---|---|
| Bore | 4.3583" |
| Stroke | 3.5984" |
| Cylinders | 8 |
| Configuration | V8 |
| Bore/stroke ratio | 1.211 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 350 hp |
| Years | 1959–1960 |
| Bore/stroke character | 1.211 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,598 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 53.8 ci |
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These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1959 | 350 hp | J-code |
| 1960 | 350 hp | J-code |