Stingray Corvette Forum banner

1 - 20 of 38 Posts

·
Senior Member
Joined
·
18,670 Posts
Discussion Starter · #1 ·
What does "625+" HP Mean?

The official Media.GM.com 1.14.14 press release stated,"The new, supercharged 6.2L engine is expected to deliver at least 625 horsepower."

GM's "Dealer Fact Sheet" listed, "625+ horsepower."

GM's Small Block Engine Program Manager Jordan Lee, in an interview also at that time, with enginelabs.com, stated, "We fully expect to beat that number, but we came up with a safe estimate for the [NAIAS]."


All are saying it will exceed 625HP, and similarly, that it will beat the announced 635 TQ.

Highly doubt that GM knows the exact numbers now, for not only are they doing engine and powertrain calibrations, but always looking over their shoulder to avoid the dreaded gas guzzler tax, and/or to get a "magic MPH" number. With a supercharger, upping or decreasing HP and TQ is as simple as re-sizing a pulley -- though we all know there are many other ways to also do that.

Can they get to 641 HP (beating the Viper) or more, still avoid the gas guzzler tax AND get 25 MPG highway? Again, do not think even GM knows these answers at this point, for so, so many variables are being calculated, adjusted and re-adjusted at this point. It took 'till roughly mid summer last year to come out with the official StingRay LT1 numbers, including the SAE confirmation of the testing procedures process. This year, with the Z06's delayed to approximately "the end of 2014" production start, we probably will not know the Z06's official/final HP & TQ numbers until the fall.

However, can not get the following statement out of my head, as I wonder what the Z06's final HP & TQ numbers will be, the statement made by Tadge Juechter, quoted in the March issue of "Automobile" magazine, and reacting to the magazine's comment to him during that interview that both the 625 & 635 numbers are a "plus," Tadge said,

"Those numbers aren't final, but you can put 'a big emphasis' on the 'plus'."

Betting on the HP number being at least 641, and the TQ being at least 630. Go Tadge and Team!
 

·
Registered
Joined
·
582 Posts

·
Registered
Joined
·
502 Posts
Tadge makes additional comments in the recent Car & Driver article on the Z06 - something to the effect that they are going to try very hard to meet/beat the ZR1 638hp...BUT...C&D also makes a very valid point - it will be challenging as the LT4 supercharger displaces less volume per revolution than the one on the LS9.

The good news is TORQUE - already ahead of the ZR1, and most likely going higher....
 

·
Registered
Joined
·
16 Posts
Even at 625 on the nose, I'd be happy for a stock vehicle. A few bolt ons and a tune will likely get some significant gains.

At this point my main concerns will be weight, handling, and traction.
 

·
Registered
Joined
·
1,922 Posts
Has anyone hinted at the weight? More or less than z51 stingray?
Well you can make some assumptions. Figuring the Z06 is based on the Stingray and they did a lot to keep the weight down you can use this as a starting point and then look at what the differences are. The Z06 has bigger brakes, tires and wheels. Body is wider and my guess is the engine will be a little heavier. Based on this I would take a guess at around 150lbs heavier.
 

·
Senior Member
Joined
·
18,670 Posts
Discussion Starter · #11 ·
Car and Driver, who was wrong that it would not be introduced until 2016 MY, that all would be called Z07's, has estimated 3,600-3,700 pounds.

Motor Trend is estimating 3,450.

There are five numbers we all want (some only care about four of them). However, these numbers will not be revealed at next month's Bash. We will not get the final HP, not get the final TQ, not get final pricing (though we will again hear that if you could afford a C6 Z06, you can afford this one), we will not get fuel mileage, and, just like the StingRay one year ago, we will not get final weight next month.
 

·
Senior Member
Joined
·
18,670 Posts
Discussion Starter · #12 ·
I'm going to predict 640hp final number.
Redc7 predicted 625 HP months before the Z06's 1.13.14 Reveal. He says he has no inside knowledge, but he clearly has a good predictive ability. If he says 640 HP, I too am going with 640. (When we met up at the Bash, I am going to give him a couple of bucks to buy us lottery tickets.)
 

·
Registered
Joined
·
1,922 Posts
Redc7 predicted 625 HP months before the Z06's 1.13.14 Reveal. He says he has no inside knowledge, but he clearly has a good predictive ability. If he says 640 HP, I too am going with 640. (When we met up at the Bash, I am going to give him a couple of bucks to buy us lottery tickets.)
Thanks John might buy one for myself too. ;)
 

·
Registered
Joined
·
126 Posts
I have a ? If I tune my stingray will I get more horsepower? Please help with this ? Thank you
 

·
Registered
Joined
·
132 Posts
That 640 is right where a pro charger puts a regular C7, not bad for one to know the internals are able to handle ProChargers power... And two you get that for just $6k or so and not have to wait a year!


Sent from my iPhone using Corvette Stingray Forum mobile app
 

·
Senior Member
Joined
·
18,670 Posts
Discussion Starter · #18 ·
640 ties the viper so I'm saying 642...lol
I am with Soho on 642 HP now, and partially because of human nature being what it is, and as been said, Viper has 640. Reason why I like 642 is that the new, approx. $300K, McLaren 650S is rated at 641 HP here in the States.

Thinking a nice round 640 TQ. Even 635 TQ will make this car screaming fast.
 

·
Registered
Joined
·
4,656 Posts
That 640 is right where a pro charger puts a regular C7, not bad for one to know the internals are able to handle ProChargers power... And two you get that for just $6k or so and not have to wait a year!


Sent from my iPhone using Corvette Stingray Forum mobile app
Don't confuse an aftermarket add on with a factory supported, 100,000 mile warrantied package. Besides, I don't know of anyone who has actually put a pro-charged LT1 on a real engine Dyno, not a chassis Dyno.

Not bad mouthing the aftermarket, just pointing out the major differences.


Sent from my iPad using Corvette Stingray Forum
 

·
Registered
Joined
·
132 Posts
Agreed, I am adding the $1200 100k warranty for piece of mind to my PC kit. But that will mean possible hassles with the GM service dept when they say "you have a SC, your radio isn't under warranty anymore!"


Sent from my iPhone using Corvette Stingray Forum mobile app
 
1 - 20 of 38 Posts
Top