2014 Corvette LT1: 460 HP @ 6,000 RPM, 465 FT-LB @ 4,600 RPM
05-28-2013, 11:42 AM
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2014 Corvette LT1: 460 HP @ 6,000 RPM, 465 FT-LB @ 4,600 RPM Nice. 
http://blog.kerbeck.com/2013/05/2014...s-out-460.html
The 2014 Corvette Stingray’s all-new LT1 6.2L V-8 engine is SAE-certified at 460 horsepower (343 kW) at 6,000 rpm and 465 lb-ft of torque (630 Nm) at 4,600 rpm, with the available performance exhaust system, Chevrolet announced today.
The Stingray is SAE-certified at 455 horsepower (339 kW) and 460 lb-ft (624 Nm) with the standard exhaust system. They are the highest standard power ratings ever for the Corvette, delivered with efficiency that is expected to exceed 26 mpg 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,” said Jordan Lee, Small Block chief engineer.
“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.”
At 74 horsepower per liter, the LT1 has greater power density than the C6 Corvette’s LS3 6.2L engine and even the C6 Z06’s racing-derived 7.0L LS7. It also produces comparable torque to the LS7 – up to 4,700 rpm – and its peak torque is within 5 lb-ft of the 7.0L engine. That torque is generated early and sustained across the rpm band, with 316 lb-ft available at only 1,000 rpm and 90 percent of peak torque available from 3,000 rpm to 5,500 rpm – giving the lightweight Corvette Stingray excellent acceleration at all speeds.
Chevrolet estimates the Corvette will run from 0 to 60 mph in less than four seconds.
The Stingray is SAE-certified at 455 horsepower (339 kW) and 460 lb-ft (624 Nm) with the standard exhaust system. They are the highest standard power ratings ever for the Corvette, delivered with efficiency that is expected to exceed 26 mpg 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,” said Jordan Lee, Small Block chief engineer.
“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.”
At 74 horsepower per liter, the LT1 has greater power density than the C6 Corvette’s LS3 6.2L engine and even the C6 Z06’s racing-derived 7.0L LS7. It also produces comparable torque to the LS7 – up to 4,700 rpm – and its peak torque is within 5 lb-ft of the 7.0L engine. That torque is generated early and sustained across the rpm band, with 316 lb-ft available at only 1,000 rpm and 90 percent of peak torque available from 3,000 rpm to 5,500 rpm – giving the lightweight Corvette Stingray excellent acceleration at all speeds.
Chevrolet estimates the Corvette will run from 0 to 60 mph in less than four seconds.
. . . the LT1 . . . produces comparable torque to the LS7 – up to 4,700 rpm – and its peak torque is within 5 lb-ft of the 7.0L engine. That torque is generated early and sustained across the rpm band, with 316 lb-ft available at only 1,000 rpm and 90 percent of peak torque available from 3,000 rpm to 5,500 rpm . . .
05-28-2013, 06:13 PM
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Here is a picture of the 2014 SAE LT1 Corvette sheet just released with the 2010 Camaro SAE LS3 sheet scale to it. Nearly identical at 1000rpm then the LT1 is ~50ft-lbs stronger by 2500rpm and ~70ft-lbs by 3200rpm!!
Last edited by camz28arro; 05-28-2013 at 06:27 PM.
05-28-2013, 07:44 PM
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In that graph the engine peaks at 6500 not 6000. Is it possible GM only brought the SAE test engines to 6000rpm to underrate the numbers? Possibly. But the torque numbers also seem wrong in Fig.55. Edit: It says 7.37ft-lbs per gridline but if you look at peak torque (465 - 424 = 41 / 2.7) that's double at around 15ftlbs per gridline, which means the LS3 makes less than 260ftlbs at 1000 but the SAE states about 300ft-lbs. (The LS1 SAE sheet even shows much more than 260ft-lbs)
Last edited by camz28arro; 05-28-2013 at 08:26 PM.
05-28-2013, 08:51 PM
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Those are good points. The "Figure 55" data was presented at SAE World Congress in April, but it's not certification data. One thing you can see with the "Figure 55" data is that it looks to be real 500 rpm increments of steady state WOT performance on an engine dyno. They are basically connecting the dots with what appears to be minimal smoothing.
In the SAE J1349 image, which is basically an advertised number, you can see heavy smoothing. Also, in the bottom left corner it mentions "performance exhaust." So we'll have to see how the various option packages play out.
I don't know which one is "correct" or not. Obviously for comparison's sake it's easiest to look at SAE J1349 curves rather than engine development data. I guess you could say that each graph tells a different story, or maybe a different part of the same story.
In the SAE J1349 image, which is basically an advertised number, you can see heavy smoothing. Also, in the bottom left corner it mentions "performance exhaust." So we'll have to see how the various option packages play out.
I don't know which one is "correct" or not. Obviously for comparison's sake it's easiest to look at SAE J1349 curves rather than engine development data. I guess you could say that each graph tells a different story, or maybe a different part of the same story.
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06-05-2013, 01:16 PM
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It's a computer...it will be figured out.
As for the Vette motor? I'm pretty disappointed. 460/460 is pretty weak in today's market. If I'm going to spend the $70K+, could they at least install an engine with LS7 power #s? 500/500? They should have just installed the LS7 instead of playing these games.
As for the Vette motor? I'm pretty disappointed. 460/460 is pretty weak in today's market. If I'm going to spend the $70K+, could they at least install an engine with LS7 power #s? 500/500? They should have just installed the LS7 instead of playing these games.
06-05-2013, 02:03 PM
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It's a computer...it will be figured out.
As for the Vette motor? I'm pretty disappointed. 460/460 is pretty weak in today's market. If I'm going to spend the $70K+, could they at least install an engine with LS7 power #s? 500/500? They should have just installed the LS7 instead of playing these games.
As for the Vette motor? I'm pretty disappointed. 460/460 is pretty weak in today's market. If I'm going to spend the $70K+, could they at least install an engine with LS7 power #s? 500/500? They should have just installed the LS7 instead of playing these games.
06-06-2013, 09:52 AM
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I think it's awesome. Torque per liter/ci is a pretty big indicator. It makes more than the LS7 in that respect, and close torque/ci to what you would consider good numbers on an older crate engine's gross numbers.
06-06-2013, 11:18 AM
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So does a honda civic engine. I really don't care how many cubes are under the hood, I want brute power that packs a punch greater than the Camaro and the Mustang.
06-06-2013, 12:07 PM
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So you have the cash to buy enough of them to support GM's production goals if they turn it into a one trick pony? Because I don't think they're to worried about building the Corvette as that especially given that the majority of people who can and will buy a Corvette probably only factor its capability on the drag strip ten places down. The top spots being reserved for 'makes people not care that I'm old and/or bald" and "makes 'em think I've got a sexy bulge in my pants....my wallet". This is the base engine we're talking about and its torque/L shows the capability of the design.
06-06-2013, 02:48 PM
#14
Camaro Z/28 - no
Camaro ZL1 - no
Mustang GT - check
Mustang Boss - check
Mustang GT 500 - no
So the base Corvette is only outpowered by the very upper limits of those two cars.
Amazing. 460hp in a base package, and there are still complaints.
06-06-2013, 08:48 PM
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It's 460 in the base Corvette model AND has a better torque curve than the LS3 AND it's in a Corvette which is JUST A TAD lighter and more aerodynamic than a Camaro or Mustang.
I don't get the disappointment. It's an all new Corvette that looks to be just as big a change for the better as we got in 1997, it's still relatively light, it's more aerodynamic, it has improved suspension, handling, etc. (GM tested a C6 Z06 and it ran faster on the thinner C7 wheels/tires than on its own stock equipment) and after almost 2 decades of LS engines and constantly improving, iteration #1 of the new wave of LT engines produces 460/465 at the rear wheels with the same displacment as the LS3, produces virtually the same torque as the 7 Liter LS7, and unlike those 2 engines that came at the END of almost 2 decades of LS engines, this new LT1 is the beginning and doesn't have the benefit of 2 decades worth of intake, cylinder head, etc. refinement and trial & error. Yet tops all base model LS engines and competes with the LS7, which is an NA supercar beast.
Can't wait to see what the LT-4, LT-5, or LT-Whatever they decide to call it does in the next Gen Z06.
I don't get the disappointment. It's an all new Corvette that looks to be just as big a change for the better as we got in 1997, it's still relatively light, it's more aerodynamic, it has improved suspension, handling, etc. (GM tested a C6 Z06 and it ran faster on the thinner C7 wheels/tires than on its own stock equipment) and after almost 2 decades of LS engines and constantly improving, iteration #1 of the new wave of LT engines produces 460/465 at the rear wheels with the same displacment as the LS3, produces virtually the same torque as the 7 Liter LS7, and unlike those 2 engines that came at the END of almost 2 decades of LS engines, this new LT1 is the beginning and doesn't have the benefit of 2 decades worth of intake, cylinder head, etc. refinement and trial & error. Yet tops all base model LS engines and competes with the LS7, which is an NA supercar beast.
Can't wait to see what the LT-4, LT-5, or LT-Whatever they decide to call it does in the next Gen Z06.
06-07-2013, 09:18 AM
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The clincher.. look at the torque curve (316Ft lbs at 1000RPM!!!!!!).. this thing will be capable of stupid high MPG #'s if driven properly. That destroys LS torque and we all know how much of an improvement it was in the late 90s. Add that to the fact that it will still whoop up on most of the cars on the road in base untouched form... Where do I sign to get one of these to put in my 4th gen? 
06-07-2013, 03:26 PM
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It's 460 in the base Corvette model AND has a better torque curve than the LS3 AND it's in a Corvette which is JUST A TAD lighter and more aerodynamic than a Camaro or Mustang.
I don't get the disappointment. It's an all new Corvette that looks to be just as big a change for the better as we got in 1997, it's still relatively light, it's more aerodynamic, it has improved suspension, handling, etc. (GM tested a C6 Z06 and it ran faster on the thinner C7 wheels/tires than on its own stock equipment) and after almost 2 decades of LS engines and constantly improving, iteration #1 of the new wave of LT engines produces 460/465 at the rear wheels with the same displacment as the LS3, produces virtually the same torque as the 7 Liter LS7, and unlike those 2 engines that came at the END of almost 2 decades of LS engines, this new LT1 is the beginning and doesn't have the benefit of 2 decades worth of intake, cylinder head, etc. refinement and trial & error. Yet tops all base model LS engines and competes with the LS7, which is an NA supercar beast.
Can't wait to see what the LT-4, LT-5, or LT-Whatever they decide to call it does in the next Gen Z06.
I don't get the disappointment. It's an all new Corvette that looks to be just as big a change for the better as we got in 1997, it's still relatively light, it's more aerodynamic, it has improved suspension, handling, etc. (GM tested a C6 Z06 and it ran faster on the thinner C7 wheels/tires than on its own stock equipment) and after almost 2 decades of LS engines and constantly improving, iteration #1 of the new wave of LT engines produces 460/465 at the rear wheels with the same displacment as the LS3, produces virtually the same torque as the 7 Liter LS7, and unlike those 2 engines that came at the END of almost 2 decades of LS engines, this new LT1 is the beginning and doesn't have the benefit of 2 decades worth of intake, cylinder head, etc. refinement and trial & error. Yet tops all base model LS engines and competes with the LS7, which is an NA supercar beast.
Can't wait to see what the LT-4, LT-5, or LT-Whatever they decide to call it does in the next Gen Z06.
I think the only reason it makes the power it does is so that they can ride the LTx train for a LONG time making little "improvements" here and there and everyone will be happy about it.
Hell, the LS3 with VERY minor changes to the heads and cam could make more than the new LT1. And 99% of people wouldn't tell the difference in drivability.
06-07-2013, 08:43 PM
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I'm disappointed in the engine, not the car. How much power do the SRT 392's make? The Ford 302 already makes 440 and how long has it been out? This LT1 DOES benefit from 20+ years of head and intake development. Do you think they just ignored everything they learned from the LS motors? I realize that they have room to grow and improve with this being their first DI V8, but they have had other DI motors for a while, so they already have some experience with it.
I think the only reason it makes the power it does is so that they can ride the LTx train for a LONG time making little "improvements" here and there and everyone will be happy about it.
Hell, the LS3 with VERY minor changes to the heads and cam could make more than the new LT1. And 99% of people wouldn't tell the difference in drivability.
I think the only reason it makes the power it does is so that they can ride the LTx train for a LONG time making little "improvements" here and there and everyone will be happy about it.
Hell, the LS3 with VERY minor changes to the heads and cam could make more than the new LT1. And 99% of people wouldn't tell the difference in drivability.
the LT1's heads will make the LS3 look like a red headed step child.some proof:
LT1 Cam:
.551/0.524 200/207 116.5
LS3 Cam:
.551/.525 204/211 117
smaller cam, more power and torque.
isnt that one of the hallmarks of a good head design?
Last edited by Wnts2Go10O; 06-07-2013 at 09:13 PM.
06-07-2013, 11:01 PM
#20
The duration can be less since the cam can be advanced or retarded as necessary. Hard to make straight across comparisons with conventional cams. The heads do look great though, big runners, straight shots, canted valves...good stuff.