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Ford 302ci specs: 302 ci (4.9L) 8-cylinder, 3.631 x 3.649 in (92.2 x 92.7 mm) bore and stroke, 9.8:1 compression. Rated 500-565 hp, 2013–2016. OHV.
The Ford 302ci is close to square: 3.631" bore against 3.649" stroke, within 0.5%, which splits the difference between a high-revving layout and a torque layout. The 3.649" stroke puts mean piston speed at 4,000 ft/min around 6,600 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.626 is in the range most production engines fall in. Each of the 8 cylinders displaces 37.8 ci (619 cc).
9.8:1 on iron heads is in the range that usually runs on pump premium; iron holds heat, so treat it as the less forgiving side of that range.
It is one of 37 engines in the Ford 302ci family, all of them 302 ci — the differences between them are in compression, heads and rating, not displacement. 4 factory variants share these dimensions, rated from 500 to 565 hp across 2013–2016.
| Displacement | 302 ci / 4.9 L |
|---|---|
| Bore | 3.631" |
| Stroke | 3.649" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 9.8:1 |
| Rod length | 5.933" |
| Rod ratio | 1.626 |
| Bore/stroke ratio | 0.995 |
| Piston deck clearance | 0" |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 500–565 hp |
| Years | 2013–2016 |
| Bore/stroke character | 0.995 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,649 ft/min — in the range typical of performance street engines |
| Rod ratio | 1.626 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 37.8 ci |
| Static compression | 9.8:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 2013 | 500 hp | — |
| 2014 | 525 hp | — |
| 2014 | 560 hp | — |
| 2016 | 565 hp | — |