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Porsche M96/05 specs: 3.6L (219.44 ci) 6-cylinder, 96 x 82.8 mm (3.7795 x 3.2598 in) bore and stroke. Rated 325 hp, 2005–2008. Used in the Porsche 911.
The Porsche M96/05 is oversquare — the 3.7795" bore exceeds the 3.2598" stroke by 15.9% — a layout that favors airflow and RPM over leverage at the crank. The 3.2598" stroke does not reach 4,000 ft/min of mean piston speed until about 7,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 36.6 ci (599 cc).
It is one of 6 engines in the M97 family, sitting between the 206.69 ci and 233.3 ci members. 4 factory variants share these dimensions, rated at 325 hp across 2005–2008.
| Displacement | 219.44 ci / 3.6 L |
|---|---|
| Bore | 3.7795" |
| Stroke | 3.2598" |
| Cylinders | 6 |
| Bore/stroke ratio | 1.159 |
| Fuel type | gas |
|---|---|
| Firing order | 1-6-2-4-3-5 |
| Advertised HP | 325 hp |
| Years | 2005–2008 |
| Bore/stroke character | 1.159 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,260 ft/min — conservative for a street engine |
| Displacement per cylinder | 36.6 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 |
|---|---|---|
| 2005 | 325 hp | M96/05 |
| 2006 | 325 hp | M96/05 |
| 2007 | 325 hp | M96/05 |
| 2008 | 325 hp | M96/05 |
1 factory vehicle, 2002–2008. Each year opens that model's engine table.