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Ford 460ci specs: 460 ci (7.5L) 8-cylinder, 4.362 x 3.85 in (110.8 x 97.8 mm) bore and stroke, 8.264:1 compression. Rated 197-202 hp, 1977–1978. OHV.
The Ford 460ci is oversquare — the 4.362" bore exceeds the 3.85" stroke by 13.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.85" stroke puts mean piston speed at 4,000 ft/min around 6,250 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.716 is in the range most production engines fall in. Each of the 8 cylinders displaces 57.5 ci (942 cc).
8.264:1 on iron heads is low by modern standards and generally happy on regular pump fuel.
It is one of 9 engines in the Ford 460ci family, all of them 460 ci — the differences between them are in compression, heads and rating, not displacement. 2 factory variants share these dimensions, rated from 197 to 202 hp across 1977–1978.
| Displacement | 460 ci / 7.5 L |
|---|---|
| Bore | 4.362" |
| Stroke | 3.85" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 8.264:1 |
| Rod length | 6.605" |
| Rod ratio | 1.716 |
| Bore/stroke ratio | 1.133 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 197–202 hp |
| Years | 1977–1978 |
| Bore/stroke character | 1.133 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,850 ft/min — in the range typical of performance street engines |
| Rod ratio | 1.716 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 57.5 ci |
| Static compression | 8.264:1 — low by modern standards, generally happy on regular pump fuel |
| Intake valve diameter | 2.083" |
|---|---|
| Exhaust valve diameter | 1.654" |
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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 |
|---|---|---|
| 1977 | 197 hp | — |
| 1978 | 202 hp | — |