elegant

Went to GM's media site, then clicked on the PDF files on that site, and on that site, for both the coupe and convertible, are press releases that state that the HP is 455 and the TQ is 460. No use of the words "preliminary" nor "estimated." This again could be January-accurate info, since modified by the tweaking/fine-tuning on the motor done since? So, FWIW, here's the site:

http://media.gm.com/dld/content/medi...UPE-MANUAL.pdf

Dou12buyit

Seems legit although the sheet is not final with some more numbers missing. I am slightly disappointed if it is true, but hey, it is > 450.

ctusser

Somewhat disappointing after the extended delay and the build of speculation and buzz. I was certainly starting to believe some of it...

LS6GXP

There was a lot of missing info ... Basic stuff like cargo space???

This doesn't seem finished...

RocketGuy3

I don't consider that a confirmation at all, for reasons discussed in the other threads where this was linked.

It may end up being the final number (although I doubt it), but this hardly makes it official.

Stingray23

I sure hope thats wrong

Jawnathin

Nice find, thanks for sharing.

It started to become clear after yesterdays press announcement which was edited later back to an estimated 450. While it is possible it was a typo, clearly that number comes from somewhere internally. This document gives another big dose of credibility to the 455hp figure. We also know it has been SAE certified recently, so it makes sense numbers are starting to slip now instead of months ago. And interestingly enough, this is pretty much what GM has been saying all along.

Anyway, like I said in the other thread, the car will be still be a solid performer with 455hp. Higher numbers may look and sound better, but I doubt an extra 10-15hp will change the performance in any meaningful way.

So a question for the folks who were pretty much set and confident the car will have 470-480hp. How do you all feel? Are you still interested in buying one? Are you disappointed it didn't meet expectations?

Jawnathin

Did a little bit of digging.

The spec sheet for the Automatic still shows the same 455/460. No estimated attached.

http://media.gm.com/dld/content/medi...COUPE-AUTO.pdf

The spec sheet for the convertibles, both auto and manual show estimated 450/450.

http://media.gm.com/dld/content/medi...TIBLE-AUTO.pdf

http://media.gm.com/dld/content/medi...BLE-MANUAL.pdf

jkcam6017

Just because you wish something would happen, it doesn't make it happen. TJ said about 450 and it is a smidge better. Get over it.

If someone wants epic hp that they will never use, they should buy the Camaro or the Shelby.

0Andrew6@TheDoubleAA

to me the numbers don't mean much anyway as these are not true RWHP numbers anyways. The c6 with NPP said it was 436 on a dyno after a tune I had 383 rwhp which is pretty good for an automatic. I would assume with all said and done you'll probably see numbers just better than 400 rwhp which is pretty good in my opinion on any stock car.

VinceJB

What a JOKE! The C5 Z06 made 405hp, the C6 made 400hp. The C7 SHOULD have made 500! 475 min! Not only that I am pretty sure it will weigh in at a FAT 3300 prolly 3350 with the Z51. Really a pathetic 25 hp gain over LS3 with DI!!?? This better be a tuning issue we can fix.

GM = FAIL

All this buzz, what a complete joke if this is true.

BTW, the C6 Z06 makes MORE HP at the rear wheels then the C7 makes brake. I do not call this moving ahead.

rob62

gthal

Is HP the only thing that matters?

I agree though, if I can't tell my friends it has 500HP, then I'll be too embarrassed to own a C7. I couldn't tell someone only 455HP without a huge amount of shame. It could lap the 'Ring in 7:10 and I still couldn't own if it I had to ever admit only 455HP.

Kurac

The more I think about, the more it sounds like these are the figures, especially when GM had been comparing LT1 torque to LS7 torque...but only from 2k-4k RPM. Why would they not compare it to the whole RPM range unless LS7 torque was higher after 4k RPM...which lends credibility to the 460tq number. With this cam supposedly making equal HP and TQ, then the 455/460 HP/TQ sounds to be the most logical figure. With that being said, I am a bit disappointed if these are the final figures especially since weight doesn't improve. Seems as though more weight was/is being placed on MPG than out right performance. Nothing wrong with that as 30+ MPG's highway with 455 is still impressive, as long as it gets 30+.

bigwoolyg

amazing how hung up people are on peak hp numbers..

gthal

You can't have a big e-peen without big peak HP

hyteck9

I admit that I'm sad.
The addition of DI alone should have seen bigger gains.
From 430 HP in the c6 base model to 455 in the C7 base model..?

That is like.. what.. 6%? "SIX!"

seriously?

I can think of many ways to get 6% that would have cost next to nothing compared to R&Ding a new LT1 DI platform. I'm glad to hear the power curve is so flat, but 6??!!! what a waste of money and time.

I know that isn't the whole story. a power plant is HP, torque, and efficiency (MPG) and its all a balance. But unless this thing gets 35mpg in the city.. I say they ruined a great R&D opportunity.

Glenmcp

My order is in and will stay in. Starting about two years ago I was hoping for 500-550 hp as there are coupes, SUV's, and pickups in that range. I know the Vette is not a muscle car. but was hoping the base C7 would hold it's own with the high output Camaros and Mustangs. That does not seem likely unless the Z Vette adds at least 100 hp to the base engine. Anyway, I know I will love my 2014.

Sin City

I dare anyone to tell me they could feel another 10 HP.

You guys whine too much over this issue. What's more important is the overall performance, not some silly numbers.

HP is an overrated number. It's not that HP number that counts. Its the overall performance of the motor that does.

Medic Man

Why do you hope that's wrong? Because the Forum started a frenzy? Call me crazy but I'm happy to see the 460 torque numbers.