Dyno-tastic! Infiniti G37 on the rollers
by John Neff on May 21st 2007 at 2:23PM 
Infiniti hasn't announced its official peak power numbers for the 2008 G37 coupe, so the impatient folks at Automobile threw one on a chassis dyno to see how the power it puts down at the rear wheels compares to the 330 hp and 270 ft-lbs. of torque the Japanese automaker estimates the car will make. It turns out Infiniti wasn't exaggerating about how powerful the G37's new 3.7L VQ37VHR with infinitely variable valve timing is, and the new engine blows away the previous 3.5L motor in every way. According to Automobile's dyno graphs, the new 3.7L produces 287 hp and 236 ft-lbs. of torque at the rear wheels, which means friction in the drivetrain accounts for about a 13% loss in power from the flywheel. The previous 3.5L VQ V6 used in the 2007 G35 coupe produces 236 hp and 218 ft-lbs. of torque at the wheels. This means that although the new engine is only 5.6 percent larger in displacement, it produces almost 22 percent more power than the engine it replaces. Automobile does note that it can't be sure if such a large increase in power is due to the new engine or reduced friction in the drivetrain, but suspects that since the drivetrains of the 2007 and 2008 model are similar that the gains are mostly from the motor.
You can check out all the dyno graphs from Automobile by clicking on the Read link and videos of the new Infiniti G37 being dyno tested after the jump.
[Source: Automobile]
Reader Comments (Page 1 of 2)
FLR 2:52PM (5/21/2007)
That's pretty impressive. They're making great power out of V6's today. Heck, even GM is getting over 300 rated hp out of their latest Cadillac V6.
Reply
Uhh... 3:48PM (5/21/2007)
Nice!
Reply
Tarik 3:00PM (6/13/2007)
if this is any hint at to what the new gtr will be equipped with holy $H!T
Reply
Justin 4:24PM (5/21/2007)
Whats with the 'S' next to G37? I have not seen mention of that before? Any ideas? I doubt the Automobile guys riced it out by putting an Integra S decal next to the 37 :-)
Reply
Phil L. 3:17PM (5/21/2007)
So... Any thoughts as to when/if automakers will start using performance gains to offer *smaller* engines with similar performance to past models that had larger engines in response to higher fuel prices?
Reply
Justin 4:24PM (5/21/2007)
In response to my own comment at #2, after looking, I am guessing the 'S' is for 'Sport' in the G37 Coupe Sport 6MT model.
Makes me wonder if the G37 Coupe Journey model will have a 'J' next to it? G37J and Justin go nice together. But I doubt it.
Reply
Darien Allen 3:41PM (5/21/2007)
Justin I'm assuming that the S is the designation of the sport model, comes with a 6 speed MT.
Reply
Mondo 3:35PM (5/21/2007)
S on the G is the Sport model.
Reply
Christopher Watts 3:39PM (5/21/2007)
Wow....wonderful, useless information. More please.
Reply
blitzkrieg79 5:08PM (5/21/2007)
#3, this has been already the case for the entire world except of course USA. Particularly in Europe, auto makers don't put higher displacement engines from generation to generation, instead they work with the same displacement but improve power and fuel efficiency without increasing the displacement. Only in USA it is believed that there is no replacement for displacement when it comes to power... except for better technology which I guess USA is a bit behind.
Hybrids are overrated, not only they are not as efficient as they claim to be but they don't provide enough oomph and they may not emit as much pollution as diesels but over the long run when the time to replace the batteries will come they will actually be more harmful to the environment than people realize. Europeans, for a long time, have diesels that not only give you 40-50MPG but also provide some decent power.
Reply
Don 3:47PM (5/21/2007)
That's quite a bump. And with better fuel economy. Wonderful. Watch out BMW.
Reply
futurama 3:56PM (5/21/2007)
the car makers need to stop on this horsepower war... the power cars of today produces are way more than enough for daily, even track usage. they need to turn such resources to improving fuel economy... more power consuming same gas consumption is not impressive anymore. i want same power, with GREATER emphasis on improving fuel consumption...
Reply
paul34 3:36PM (5/23/2007)
They *could* have it both ways (kind of):
Small displacement, turbocharged motors (especially small turboed diesels). Works for Europe, and I'd say would work here as well if only people were willing... great economy when just going about town or commuting; and if you want to have a little fun, that's there for ya too.
But people in this country won't "get the message" until they push gas prices to $5/gal =(
nick 3:59PM (5/21/2007)
Nice, but what a shame it's still got that awful rice-rocket exhaust note. Guess that's their target demographic -- in my neck of the woods, the G35 coupe is driven mostly by young guys with too much hair gel and too much jewelry. It's like a (very slightly) upmarket Mustang GT.
Reply
Andrew Tanasescu 4:07PM (5/21/2007)
#10
I feel that most people actually love the G's note. Infact, while strolling around a BMW forum, i found a thread about BMW owners trying to figure out how to make their exhaust sound like a g35. Guess someone doesnt know how to appriciate engine sounds.
Reply
J. Kempe 4:07PM (5/21/2007)
"I don't need power, acceleration hurts my angel wings...."
Meanwhile for us with devil horns and that do other things for the environment like, I don't know, work within 5 miles of their house (Reduce emissions, drive less) In my 'Evil' car I use less gas per week than my best friend and his 'Saintly' Prius... So give me power, lots of power and low weight, and I'm Happy.... This car is great, but i can only imagine what a V8 would do (3.7L/6*8=~4.9 to 5.0L)...
Reply
jg 4:25PM (5/21/2007)
'Infact, while strolling around a BMW forum, i found a thread about BMW owners trying to figure out how to make their exhaust sound like a g35.'
I find that hard to believe. Not that any BMW owners wouldn't appreciate the sound or looks of a G35 but that they would want to change the sound of their own engines to match a G35.
Reply
HardwareGuy 4:30PM (5/21/2007)
Is the 3.7 going to replace the 3.5 in all of Nissan's lineup? I would love to see a Z with this new engine.
Reply
stefan 4:31PM (5/21/2007)
This G37S doesnt have that awful chrome spoiler, this looks much better.
Reply
Dr. Greenthumb 4:54PM (5/21/2007)
3. So... Any thoughts as to when/if automakers will start using performance gains to offer *smaller* engines with similar performance to past models that had larger engines in response to higher fuel prices?
-----------------------------------------------------
That will only hold true on certain models. Performance cars are always going to use their HP gains to outdo it's competitors. Gas prices will not affect the number 911s or 'Vettes (beasts of pleasure) sold here in the US. It the beasts of burden (commuter cars) that will be affected. Though in past, people have gas hogs for their weekend drives, and pick up a cheap 4cyl clunkers for commuting.
The reality is the greedy big oil knows that this is our peak driving season and will raise prices to maximise profits. The car companies are the ones that gets screwed by this predatory behavior. It takes them almost 3 years to bring a new product, and the oil companies can render it a still born at the stroke of a pen.
Can't wait for the day when the car companies can really stick it to big oil.
I think the car companies should band together and give Big Oil the heave-ho, by building and marketing
Reply