See other engines in this family
The same engine also has a main page: Nissan VQ37VHR.
Infiniti VQ37VHR specs: 3.7L (225 ci) 6-cylinder, 95.5 x 86 mm (3.7598 x 3.3858 in) bore and stroke, 11:1 compression. Rated 325-348 hp, 2008–2015.
The Infiniti VQ37VHR is oversquare — the 3.7598" bore exceeds the 3.3858" stroke by 11.0% — a layout that favors airflow and RPM over leverage at the crank. The 3.3858" stroke does not reach 4,000 ft/min of mean piston speed until about 7,100 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 37.5 ci (615 cc).
11:1 on aluminum heads is high enough that pump premium or better is normally required.
It is one of 18 engines in the VQ family, sitting between the 121.9 ci and 243.9 ci members. 22 factory variants share these dimensions, rated from 325 to 348 hp across 2008–2015.
| Displacement | 225 ci / 3.7 L |
|---|---|
| Bore | 3.7598" |
| Stroke | 3.3858" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 11:1 |
| Bore/stroke ratio | 1.11 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 325–348 hp |
| Years | 2008–2015 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2008 | VQ37VHR net | 330 @ 7000 | 270 lb-ft @ 5200 | 11:1 |
| 2009 | VQ37VHR net | 325 @ 7000 | 267 lb-ft @ 5200 | 11:1 |
| 2009 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
| 2009 | VQ37VHR net | 330 @ 7000 | 270 lb-ft @ 5200 | 11:1 |
| 2010 | VQ37VHR net | 325 @ 7000 | 267 lb-ft @ 5200 | 11:1 |
| 2010 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
| 2010 | VQ37VHR net | 330 @ 7000 | 270 lb-ft @ 5200 | 11:1 |
| 2011 | VQ37VHR net | 325 @ 7000 | 267 lb-ft @ 5200 | 11:1 |
| 2011 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
| 2011 | VQ37VHR net | 330 @ 7000 | 270 lb-ft @ 5200 | 11:1 |
| 2011 | VQ37VHR net | 348 @ 7400 | 276 lb-ft @ 5200 | 11:1 |
| 2012 | VQ37VHR net | 325 @ 7000 | 267 lb-ft @ 5200 | 11:1 |
| 2012 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
| 2012 | VQ37VHR net | 330 @ 7000 | 270 lb-ft @ 5200 | 11:1 |
| 2012 | VQ37VHR net | 348 @ 7400 | 276 lb-ft @ 5200 | 11:1 |
| 2013 | VQ37VHR net | 325 @ 7000 | 267 lb-ft @ 5200 | 11:1 |
| 2013 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
| 2013 | VQ37VHR net | 330 @ 7000 | 270 lb-ft @ 5200 | 11:1 |
| 2013 | VQ37VHR net | 343 @ 7400 | 273 lb-ft @ 5200 | 11:1 |
| 2013 | VQ37VHR net | 348 @ 7400 | 276 lb-ft @ 5200 | 11:1 |
| 2014 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
| 2015 | VQ37VHR net | 328 @ 7000 | 269 lb-ft @ 5200 | 11:1 |
Factory specification sheet.
| Bore/stroke character | 1.110 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,386 ft/min — conservative for a street engine |
| Displacement per cylinder | 37.5 ci |
| Static compression | 11:1 — high enough that pump premium or better is normally required |
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 | 330 hp | VQ37VHR |
| 2009 | 325 hp | VQ37VHR |
| 2009 | 328 hp | VQ37VHR |
| 2009 | 330 hp | VQ37VHR |
| 2010 | 325 hp | VQ37VHR |
| 2010 | 328 hp | VQ37VHR |
| 2010 | 330 hp | VQ37VHR |
| 2011 | 325 hp | VQ37VHR |
| 2011 | 328 hp | VQ37VHR |
| 2011 | 330 hp | VQ37VHR |
| 2011 | 348 hp | VQ37VHR |
| 2012 | 325 hp | VQ37VHR |
| 2012 | 328 hp | VQ37VHR |
| 2012 | 330 hp | VQ37VHR |
| 2012 | 348 hp | VQ37VHR |
| 2013 | 325 hp | VQ37VHR |
| 2013 | 328 hp | VQ37VHR |
| 2013 | 330 hp | VQ37VHR |
| 2013 | 343 hp | VQ37VHR |
| 2013 | 348 hp | VQ37VHR |
| 2014 | 328 hp | VQ37VHR |
| 2015 | 328 hp | VQ37VHR |
2 factory vehicles, 2008–2020. Each year opens that model's engine table.