John Shiels

May 28, 2013 at 1:03 pm
'14 Chevrolet Corvette Stingray's V-8 engine gets horsepower certification

Melissa Burden
| The Detroit News
3 Comments

The 2014 Corvette coupe goes on sale this fall and a convertible Stingray will be available by year's end. (General Motors)

General Motors Co. said Tuesday that its all-new LT1 6.2-liter V-8 engine offering in the 2014 Chevrolet Corvette Stingray has been certified at 460 horsepower and 465 foot-pounds of torque — an increase of 24 horsepower and 37 foot-pounds of torque over today’s LS3 6.2-liter V-8 — when using a performance exhaust system.

The engine is certified at 455 horsepower and 460 foot-pounds of torque with a standard exhaust. That’s up by 25 horsepower and 36 foot-pounds of torque over the LS3 engine. Chevy said both ratings are the highest standard power ever for the Corvette, which is expected to top 26 miles per gallon on the highway.

“The 2014 Corvette Stingray’s LT1 engine is a triumph of advanced technology, delivering more power and torque than ever before with greater efficiency,” Jordan Lee, GM’s small-block engine chief, said in a statement. “The LT1’s performance complements the Corvette’s low mass with a tremendous feeling of power that builds as the rpm climbs. Drivers will experience more power and acceleration than ever before with the standard engine — in fact, its power and torque surpass many uplevel engines offered by competitors.”

The 2014 Corvette coupe goes on sale this fall and a convertible Stingray will be available by year’s end.

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From The Detroit News: http://www.detroitnews.com/article/2...#ixzz2UcqIIxRt

yakisoba

Been reading more on this engine. Very interesting. 2000 psi fuel system. Very special pistons. 11.5:1 compression. Variable cam timing. Cuts four cylinders out to save fuel in cruise mode. Dry sump option. Makes me want one.

rustyguns

How much does it weigh? seems like with the four cylinder cutoff and super efficient direct injection you could get 30+ mpg on the highway? Plus doesn't it have a variable pitch cam? that should add to mileage also!

wildgoat

Agreed. Engine sounds great but with so many fuel saving features I expected better highway fuel economy.

I still want one though

RX-Ben

Yeah, 26mpg is a significant step backwards from what a C5 with a mild cam and headers will produce. Which makes no sense because direct injection should net a ~10% gain in economy. Maybe the air is revolting against the C7's rear end.

rustyguns

speaking of air........... any wind tunnel stats? less wind resistance than C6 or C5?

davidfarmer

torque number is impressive...nearly LS7 torque

travisnd

Hmmm... I thought 26 mpg was supposed to be combined economy. 26 highway stinks. C5s get 30-32.

John Shiels

C5 was never rated at that. Even if it was the testing is now different to be more real world.

travisnd

C5 was rated at 28.

John Shiels

under different rating system with way less hp and torque. New ratings give less fuel mileage.


edit:



I found 25 mpg combined six speed 24 automatic combined

http://www.fueleconomy.gov/feg/bymod...Corvette.shtml

hklvette

Be careful with EPA mileage numbers. "Highway" doesn't mean interstate. I wouldn't be at all surprised if the C7 can hit 35+ cruising at 65-70 on flat or nearly flat roads.

wildgoat

I hope you are right... Based on the specs so far this is what I expected.

QUIKAG

Guys, the article says it can TOP 26 highway (i.e. above 26mpg). Rest assured GM is sandbagging right now. This will easily break 30mpg highway without issue. Heck, it'll probably do 30+ averaging 85+mph with the tall overdrive gears.

95jersey

That is stock C6Z kind of torque. Should feel peppy. Love the torque of my LS7 especially after the cam though.

Timz06

I saw a post on the c7 board where someone scaled and put the ls7 and the lt1 torque curves on top of each other and they look almost identical except the lt1 runs out of air at the top end.

So that's pretty good, but, 6.2 liters is still a pretty big engine.

dfinke23

Plenty of power for the base model, I can't wait to see one in person.
I am concerned about the cylinder cutout (DOD - displacement on demand), this has been a BIG problem for GM. I have personally lost a couple of 5.3's in my truck because the DOD failed, finally put in a 6.0 on my own dime and deleted the system and have zero problems. I'm sure GM wouldn't put it in the new car without the bugs being worked out.
Also curious about the flow of the high pressure injectors and if it is a flex fuel???? I'm betting one injector will cost more than three full sets of the current LS7 injectors - $6K plus, for a full set.

rustyguns

flex fuel......i bet you could get a lot more horsepower and torque with alcohol

OH MY GOD ON THE INJECTORS!! I CAN GET A NEW ls1 CRATE MOTOR FOR THAT!

RX-Ben

Well, Duramax injectors are ~$3600 per set (for new Bosch's), I would imagine the C7 injectors from GM will be a bit more, so $6k sounds about right. I have no idea what the fueling situation is like with GDI, but if it is like diesel, the injectors are good for much higher than stock HP w/o an upgrade, as is the fuel pump (which will also cost a pretty penny). But, you really need clean fuel with such injectors & pump and GM skimps on the filtration (at least on D-Max), which contributes to some expensive fixes (see any pre~2005 Dmax for-sale listing and a shocking # have replaced injectors).
In any case, it is a whole different ball of wax than an LS engine.

travisnd

DOD only activates when you put the car in "Eco" mode. The car defaults to "Toruing" mode when you start it unless you set it to default into another mode i.e. "Sport" or "Track". So unless you select "Eco" mode the DOD will never ever operate