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Ford 5.4 DOHC supercharged specs: 330 ci (5.4L) 8-cylinder, 3.553 x 4.166 in (90.2 x 105.8 mm) bore and stroke. Rated 540-550 hp, 2010–2012.
The Ford 5.4 DOHC supercharged is undersquare — the 4.166" stroke exceeds the 3.553" bore by 14.7% — a layout that trades peak RPM for leverage and torque low in the range. The 4.166" stroke puts mean piston speed at 4,000 ft/min around 5,750 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.598 is in the range most production engines fall in. Each of the 8 cylinders displaces 41.3 ci (676 cc).
It is one of 15 engines in the Ford 330ci family, all of them 330 ci — the differences between them are in compression, heads and rating, not displacement. 3 factory variants share these dimensions, rated from 540 to 550 hp across 2010–2012.
| Displacement | 330 ci / 5.4 L |
|---|---|
| Bore | 3.553" |
| Stroke | 4.166" |
| Cylinders | 8 |
| Configuration | V8 |
| Rod length | 6.658" |
| Rod ratio | 1.598 |
| Bore/stroke ratio | 0.853 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 540–550 hp |
| Years | 2010–2012 |
| Bore/stroke character | 0.853 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 4,166 ft/min — in the range typical of performance street engines |
| Rod ratio | 1.598 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 41.3 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 |
|---|---|---|
| 2010 | 540 hp | 5.4 DOHC supercharged |
| 2011 | 550 hp | 5.4 DOHC supercharged |
| 2012 | 550 hp | 5.4 DOHC supercharged |