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BMW N62B48 specs: 4.8L (293 ci) 8-cylinder, 93 x 88.3 mm (3.6614 x 3.4764 in) bore and stroke, 10.5:1 compression. Rated 350-360 hp, 2004–2010.
The BMW N62B48 is oversquare — the 3.6614" bore exceeds the 3.4764" stroke by 5.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.4764" stroke puts mean piston speed at 4,000 ft/min around 6,900 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 36.6 ci (600 cc).
10.5:1 is in the range that usually runs on pump premium.
17 factory variants share these dimensions, rated from 350 to 360 hp across 2004–2010.
| Displacement | 293 ci / 4.8 L |
|---|---|
| Bore | 3.6614" |
| Stroke | 3.4764" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 10.5:1 |
| Bore/stroke ratio | 1.053 |
| Fuel type | gas |
|---|---|
| Advertised HP | 350–360 hp |
| Years | 2004–2010 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2004 | N62B48 net | 355 @ 6200 | 350 lb-ft @ 3400 | 10.5:1 |
| 2005 | N62B48 net | 355 @ 6200 | 350 lb-ft @ 3400 | 10.5:1 |
| 2006 | N62B48 net | 355 @ 6200 | 350 lb-ft @ 3400 | 10.5:1 |
| 2007 | N62B48 net | 350 @ 6300 | 350 lb-ft @ 3400 | 10.5:1 |
| 2008 | N62B48 net | 350 @ 6300 | 350 lb-ft @ 3400 | 10.5:1 |
| 2009 | N62B48 net | 350 @ 6300 | 350 lb-ft @ 3400 | 10.5:1 |
| 2010 | N62B48 net | 350 @ 6300 | 350 lb-ft @ 3400 | 10.5:1 |
Factory specification sheet.
| Bore/stroke character | 1.053 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,476 ft/min — conservative for a street engine |
| Displacement per cylinder | 36.6 ci |
| Static compression | 10.5:1 — 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 |
|---|---|---|
| 2004 | 355 hp | N62B48 |
| 2005 | 355 hp | N62B48 |
| 2006 | — | N62B48 |
| 2006 | 355 hp | N62B48 |
| 2006 | 360 hp | N62B48 |
| 2007 | — | N62B48 |
| 2007 | 350 hp | N62B48 |
| 2007 | 360 hp | N62B48 |
| 2008 | — | N62B48 |
| 2008 | 350 hp | N62B48 |
| 2008 | 360 hp | N62B48 |
| 2009 | — | N62B48 |
| 2009 | 350 hp | N62B48 |
| 2009 | 360 hp | N62B48 |
| 2010 | — | N62B48 |
| 2010 | 350 hp | N62B48 |
| 2010 | 360 hp | N62B48 |
4 factory vehicles, 2004–2010. Each year opens that model's engine table.