See other engines in this family
The same engine also has a main page: Ford Duratec 3.5.
Lincoln Duratec 35 specs: 213 ci (3.5L) 6-cylinder, 3.642 x 3.413 in (92.5 x 86.7 mm) bore and stroke. Rated 263-265 hp, 2007–2012. Used in the Lincoln MKX.
The Lincoln Duratec 35 is oversquare — the 3.6417" bore exceeds the 3.4134" stroke by 6.7% — a layout that favors airflow and RPM over leverage at the crank. The 3.4134" stroke does not reach 4,000 ft/min of mean piston speed until about 7,050 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 35.5 ci (582 cc).
It is one of 15 engines in the EcoBoost family, the largest at 213 ci. 10 factory variants share these dimensions, rated from 263 to 265 hp across 2007–2012.
| Displacement | 213 ci / 3.5 L |
|---|---|
| Bore | 3.6417" |
| Stroke | 3.4134" |
| Cylinders | 6 |
| Configuration | V6 |
| Bore/stroke ratio | 1.067 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 263–265 hp |
| Years | 2007–2012 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2007 | 3.5L Duratec V6 net | 265 @ 6250 | 250 lb-ft @ 4500 | — |
| 2008 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
| 2008 | net | 265 @ 6250 | 250 lb-ft @ 4500 | — |
| 2009 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
| 2009 | net | 265 @ 6250 | 250 lb-ft @ 4500 | — |
| 2010 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
| 2010 | net | 265 @ 6250 | 250 lb-ft @ 4500 | — |
| 2011 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
| 2012 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
Factory specification sheet.
| Bore/stroke character | 1.067 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,413 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.5 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 |
|---|---|---|
| 2007 | 263 hp | Duratec 35 |
| 2007 | 265 hp | Duratec 35 |
| 2008 | 263 hp | Duratec 35 |
| 2008 | 265 hp | Duratec 35 |
| 2009 | 263 hp | Duratec 35 |
| 2009 | 265 hp | Duratec 35 |
| 2010 | 263 hp | Duratec 35 |
| 2010 | 265 hp | Duratec 35 |
| 2011 | 263 hp | Duratec 35 |
| 2012 | 263 hp | Duratec 35 |
7 factory vehicles, 2007–2019. Each year opens that model's engine table.