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Dodge EGQ specs: 241 ci (4.0L) 6-cylinder, 3.78 x 3.583 in (96 x 91 mm) bore and stroke, 10.3:1 compression. Rated 251 hp, 2008–2010.
The Dodge 241ci (EGQ) is oversquare — the 3.7795" bore exceeds the 3.5827" stroke by 5.5% — a layout that favors airflow and RPM over leverage at the crank. The 3.5827" stroke puts mean piston speed at 4,000 ft/min around 6,700 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 40.2 ci (658 cc).
10.3:1 is in the range that usually runs on pump premium.
It is one of 4 engines in the Dodge 241ci family, all of them 241 ci — the differences between them are in compression, heads and rating, not displacement. 3 factory variants share these dimensions, rated at 251 hp across 2008–2010.
| Displacement | 241 ci / 4 L |
|---|---|
| Bore | 3.7795" |
| Stroke | 3.5827" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10.3:1 |
| Bore/stroke ratio | 1.055 |
| Fuel type | gas |
|---|---|
| Redline | 6,000 rpm (factory limit) |
| Advertised HP | 251 hp |
| Years | 2008–2010 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2008 | net | 251 | 259 lb-ft | — |
| 2009 | net | 251 @ 6000 | 259 lb-ft @ 4100 | 10.3:1 |
Factory specification sheet.
| Bore/stroke character | 1.055 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,583 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 40.2 ci |
| Static compression | 10.3:1 — 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 |
|---|---|---|
| 2008 | 251 hp | EGQ |
| 2009 | 251 hp | EGQ |
| 2010 | 251 hp | EGQ |
1 factory vehicle, 2008–2010. Each year opens that model's engine table.