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Ford 302ci (1968–1991) specs: 302 ci (4.9L) 8-cylinder, 4.002 x 3.00 in (101.7 x 76.2 mm) bore and stroke. Rated 131-230 hp, 1968–1991.
The Ford 302ci (1968–1991) is oversquare — the 4.002" bore exceeds the 3" stroke by 33.4% — a layout that favors airflow and RPM over leverage at the crank. The 3" stroke does not reach 4,000 ft/min of mean piston speed until about 8,000 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. A rod ratio of 1.697 is in the range most production engines fall in. Each of the 8 cylinders displaces 37.8 ci (619 cc).
It is one of 40 engines in the Ford 302ci family, all of them 302 ci — the differences between them are in compression, heads and rating, not displacement. 29 factory variants share these dimensions, rated from 131 to 230 hp across 1968–1991.
| Displacement | 302 ci / 4.9 L |
|---|---|
| Bore | 4.002" |
| Stroke | 3" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 9.5–10:1 (published figures vary) |
| Rod length | 5.09" |
| Rod ratio | 1.697 |
| Bore/stroke ratio | 1.334 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 131–230 hp |
| Years | 1968–1991 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1968 | gross | 230 * | — | 10:1 * |
| 1969 | gross | 220 @ 4600 * | 300 lb-ft @ 2600 * | 9.5:1 * |
| 1970 | gross | 220 @ 4600 | 300 lb-ft @ 2600 | 9.5:1 |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 1.334 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,000 ft/min — conservative for a street engine |
| Rod ratio | 1.697 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 37.8 ci |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1968 | 230 hp | — |
| 1969 | 205 hp | — |
| 1969 | 220 hp | — |
| 1970 | — | — |
| 1970 | 220 hp | — |
| 1971 | — | — |
| 1972 | — | — |
| 1973 | — | — |
| 1974 | — | — |
| 1975 | — | — |
| 1976 | — | — |
| 1977 | — | — |
| 1978 | — | — |
| 1979 | — | — |
| 1980 | — | — |
| 1980 | 131 hp | — |
| 1981 | — | — |
| 1982 | — | — |
| 1983 | — | — |
| 1984 | — | — |
| 1984 | 140 hp | — |
| 1985 | — | — |
| 1986 | — | — |
| 1986 | 150 hp | — |
| 1987 | — | — |
| 1988 | — | — |
| 1989 | — | — |
| 1990 | — | — |
| 1991 | — | — |
6 factory vehicles, 1968–1991. Each year opens that model's engine table.