New LT1 for 2014 6.2l alum block
12-21-2012, 11:11 AM
#641
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That's actually sad to think about. Well, you never know, I've lived through several "the V8 will die soon" periods, and it just keeps getting better.
12-21-2012, 11:41 AM
#642
Ask and ye shall receive:
http://www.carbuzz.com/news/2012/12/...vette-7712080/
"Power will come from the new LT1 V8 which the SS will share with the upcoming Corvette C7, mated to a manual transmission. Despite its standing as a halo model, GM won't limited production of the Chevy SS, building and selling as many as customers demand. The General figures that will amount to about 10,000 to 15,000 units each year. "
http://www.carbuzz.com/news/2012/12/...vette-7712080/
"Power will come from the new LT1 V8 which the SS will share with the upcoming Corvette C7, mated to a manual transmission. Despite its standing as a halo model, GM won't limited production of the Chevy SS, building and selling as many as customers demand. The General figures that will amount to about 10,000 to 15,000 units each year. "
12-21-2012, 11:48 AM
#643
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By sand bagging do you mean in initial preliminary numbers (eg. the "at least 450hp" LT1 will be announced to be ~470+ on Jan 13th), or in actual released ratings (eg. the LS1s in the Camaros were rated at 305 crank hp but put down essentially the same rwhp numbers as the Corvette LS1s that were rated at 345 crank hp since it was essentially the same engine but down rated in the F-bodies for marketing reasons). I assumed that the Gen V would be SAE J1349 certified, which as far as I know doesn't leave much room for actual ratings to be sand bagged.
Everything that GM has said about this car so far suggest it will be an exclusive numbers higher end content car. It has been surmised by fans that the currency exchange between USD and AUD is such that GM can't really offer a car less expensive than the G8 GXP was at this performance level, so they have brought it up market to make it more worthy of the required high asking price.
Everything that GM has said about this car so far suggest it will be an exclusive numbers higher end content car. It has been surmised by fans that the currency exchange between USD and AUD is such that GM can't really offer a car less expensive than the G8 GXP was at this performance level, so they have brought it up market to make it more worthy of the required high asking price.
12-21-2012, 12:19 PM
#644
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BG,
I have many questions..
I was wondering how much the Ecotec3 V8s(L86 and L83) weigh?
How much does the new V6(LV3) weigh?
Is it internally or externally balanced?
Does it use balance shafts to offset vibrations?
For cylinder deactivation does it operate in 4cylinder mode or 3 cylinder mode?
Regarding future crate engines:
If i installed it in a classic car/truck would it operate in 4 cylinder mode when presented with a low load, like current/future production vehicles? Or would this feature be disabled?
I have many questions..
I was wondering how much the Ecotec3 V8s(L86 and L83) weigh?
How much does the new V6(LV3) weigh?
Is it internally or externally balanced?
Does it use balance shafts to offset vibrations?
For cylinder deactivation does it operate in 4cylinder mode or 3 cylinder mode?
Regarding future crate engines:
If i installed it in a classic car/truck would it operate in 4 cylinder mode when presented with a low load, like current/future production vehicles? Or would this feature be disabled?
12-21-2012, 01:18 PM
#646
I'm thinking there's room to do a GN style turbo manifold on there. Passenger side bank wraps around the back over the bellhousing via a crossover, links up to the driver side manifold and runs out the front there to a turbo (as you noted, an absence of accessories on that side). Probably just dreaming lol!
12-21-2012, 01:59 PM
#647
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BG, hopefully you can confirm or deny this, i just read read a little article that says some info was leaked from GM saying we might possibly see a TT 3.6 and an LS7 in the 2014 camaro. any truth to this?
12-21-2012, 02:12 PM
#648
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Although the purist in me says that the Buick Regal GNX should be a turbo v6, if they decide that the SS and the GNX should share the same LT1/manual approach... put it this way, I wouldn't kick the Buick out of bed for eating crackers. Make mine in Black Diamond, please.
12-21-2012, 03:05 PM
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It definitely looks like the layout has room for a SC to sit in the V, similar to the LS9.
I would be greatly interested in hearing your thoughts on SC vs. a twin turbo setup, just in general since I understand you cannot speak about "big brother" yet.
I understand the SC will provide better torque under roughly 3k rpm and have less back pressure, but it seems to me that with a base motor that already has such massive torque, a turbo setup would be beneficial from an efficiency stand point. Maybe the back pressure creates too much of an EGT issue...
I would be greatly interested in hearing your thoughts on SC vs. a twin turbo setup, just in general since I understand you cannot speak about "big brother" yet.
I understand the SC will provide better torque under roughly 3k rpm and have less back pressure, but it seems to me that with a base motor that already has such massive torque, a turbo setup would be beneficial from an efficiency stand point. Maybe the back pressure creates too much of an EGT issue...
Last edited by C7ZR1forT; 12-21-2012 at 04:09 PM.
12-21-2012, 03:21 PM
#652
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As I've stated before the VVT 6.0's only need two developments in the aftermarket. However in my position, dealing with work ethics, proprietary patents, non competes, etc. I am NOT at liberty to state those needed developments. The aftermarket has to step up and develop what is truly needed, the sooner the better. VVT isn't going away...and VVC is coming soon and is extremely complex over vvt. So the aftermarket has to come through for you hot rodders to unleash the true power potential of VVT. However any information pertaining to development of parts in detail,critical processes, data logs, etc will not be allowed. Please understand my position.
The block is solid .......night and day difference in terms of stiff and increased strength. It has to be for several reasons. The greatest achieve in the Gen 5 engine? The entire engine... this is the last v8 you'll ever see NOT only from GM but the other major automotive companies as well. This one will leave a legacy unchallenged we are sure of it.
Knowing that this would be the last V8 to be developed. We went all out and really didn't leave anything on the table. The greatest achievement of this engine is output is ground breaking and shattering depending on the level of performance we deem for a vehicle.
This is unquestionable, and this is by an lunar orbit the best engine to ever leave GM. And Three valve could still happen it is developed and real world proven. However we don't make the decision on what makes it into production.
From an engineering stand point my question to you is why would you want to bore this potential engine out? Why would you want to stroke it?
Bigg Gunz
The block is solid .......night and day difference in terms of stiff and increased strength. It has to be for several reasons. The greatest achieve in the Gen 5 engine? The entire engine... this is the last v8 you'll ever see NOT only from GM but the other major automotive companies as well. This one will leave a legacy unchallenged we are sure of it.
Knowing that this would be the last V8 to be developed. We went all out and really didn't leave anything on the table. The greatest achievement of this engine is output is ground breaking and shattering depending on the level of performance we deem for a vehicle.
This is unquestionable, and this is by an lunar orbit the best engine to ever leave GM. And Three valve could still happen it is developed and real world proven. However we don't make the decision on what makes it into production.
From an engineering stand point my question to you is why would you want to bore this potential engine out? Why would you want to stroke it?
Bigg Gunz
Is the GEN IV VVT tweak exploited in the GEN V by OEM? If this is true, the aftermarket will simply reverse engineer the LT1 tricks and release it for the older blocks.
My questions about boring the block out or increasing RPM were there to tease more info about future OEM gen V engines! Sorry, I have round about ways of picking at you for info.
I generally don't crack engine blocks open to modify them. I find that OEM engineering is unmatched when it comes to material choice, quality control, and optimization. In the tuning world some "specialists" don't even use torque wrenches. So I consider the block that you guys build a jewel, I work around it but never break it open to modify key aspects.
12-21-2012, 04:25 PM
#653
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As the official unveiling of the 2014 Chevy Corvette C7 draws closer, GM is doling out choice bits of information piecemeal. While much of this information is sort of obvious, like gleaning aerodynamics data from their American Le Mans racing series, it does give us a look into just how much of an improved product GM hopes to deliver with the next Corvette. After years of anticipation, the next Corvette is almost here.
Last week GM released the first official video teaser, and they followed it up with a treatise on aerodynamics. Obviously wind resistance is a big deal in the world of high-speed racing, and GM gleaned information from its motorsports efforts to sculpt the 2014 Corvette C7. GM specifically mentions the front grille and radiator flow path as a way to reduce lift and drag.
But that’s not the only motorsports-minded improvement. Rather than go for a grand-tourer, like the Corvette of the 70’s, GM is pushing the ‘Vette as a track-capable car. Air flow is designed to be as efficient as possible, while both the transmission and differential were given heat exchangers for all-day racing fun.
Aerodynamics is all well and good, but let’s talk engine. The video is hosted by Jordan Lee, the lead engineer for the Corvette’s new fifth-generation LT1 engine. Lee talks about the new suite of technologies going into the LT1 engine such as direction injection. One thing we couldn’t help but noticed was that on the slideshow at the beginning of the video, one of the bullet points says that this new V8 is more efficient than a twin-turbo V6.
Sounds like GM was considering such a power plant. We’re happy they stuck with the V8 though, and with over a month to go before the full reveal of the C7 Corvette, we’re sure there will be plenty of teasers to mull over in the coming weeks.
12-21-2012, 05:44 PM
#654
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It definitely looks like the layout has room for a SC to sit in the V, similar to the LS9.
I would be greatly interested in hearing your thoughts on SC vs. a twin turbo setup, just in general since I understand you cannot speak about "big brother" yet.
I understand the SC will provide better torque under roughly 3k rpm and have less back pressure, but it seems to me that with a base motor that already has such massive torque, a turbo setup would be beneficial from an efficiency stand point. Maybe the back pressure creates too much of an EGT issue...
I would be greatly interested in hearing your thoughts on SC vs. a twin turbo setup, just in general since I understand you cannot speak about "big brother" yet.
I understand the SC will provide better torque under roughly 3k rpm and have less back pressure, but it seems to me that with a base motor that already has such massive torque, a turbo setup would be beneficial from an efficiency stand point. Maybe the back pressure creates too much of an EGT issue...
I am just about to leave work. I will reply to this when I get home and give you a very detailed understanding of both and why each has it place in a given vehicle and job function.
Bigg Gunz
12-21-2012, 07:16 PM
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The 12.5 intake and 12.0 exhaust valve position is pure race position placement. This is done to give room to grow in the future if needed, raised ports, shallow valve angles, superior combustion chamber and better spark plug placement...you won't be let down. So what you end up with is big heads slightly smaller valves to reduce valve shrouding. Force Induction doesn't like big valves, what happens is burned exhaust gases gets pressurized and they will go back up the intake port during overlap. So to fix this slightly smaller valves and change the exhaust valve degree & seat angles. This naturally effects the power curve. Which I really am fond of the velocity data as well.
The deck thickness is increase substantially.
Using good heads let's the engine use civilized cam profiles. Which is means we could do more with the valve train components.
These are race heads pure and simple all they need is polishing
Bigg Gunz
The deck thickness is increase substantially.
Using good heads let's the engine use civilized cam profiles. Which is means we could do more with the valve train components.
These are race heads pure and simple all they need is polishing
Bigg Gunz
I have to say this sounds alot like someone has been playing with turbochargers. Personally I think this is a good idea and would highly encourage it.
Also HIGH HP engines developed from this endeavor should be promptly put in a AWD Corvette or Camaro chassis.(I would really hate to see all those HPs to go to waste with 2wd)
Actually the more i think about it a turboed AWD Camaro would be great at running down GTRs and a AWD turbo vette would sure make alot of hyper car owners nervous.
Such unpure thoughts make me all giddy inside.
12-21-2012, 07:40 PM
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I have to say this sounds alot like someone has been playing with turbochargers. Personally I think this is a good idea and would highly encourage it.
Also HIGH HP engines developed from this endeavor should be promptly put in a AWD Corvette or Camaro chassis.(I would really hate to see all those HPs to go to waste with 2wd)
Actually the more i think about it a turboed AWD Camaro would be great at running down GTRs and a AWD turbo vette would sure make alot of hyper car owners nervous.
Such unpure thoughts make me all giddy inside.
Also HIGH HP engines developed from this endeavor should be promptly put in a AWD Corvette or Camaro chassis.(I would really hate to see all those HPs to go to waste with 2wd)
Actually the more i think about it a turboed AWD Camaro would be great at running down GTRs and a AWD turbo vette would sure make alot of hyper car owners nervous.
Such unpure thoughts make me all giddy inside.
2 laps on the Ring and it needs to be serviced. Is that really what you want?
12-21-2012, 08:48 PM
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Im not quite sure what your implying with your ambiguity. But im sure GM has enough talent to make reliable vehicles with high HP. They just seem to have a problem of putting all that power to the ground without spinning it all away.
12-22-2012, 02:18 AM
#660
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RWD is way more fun IMO. Many of the top track records for stock production cars such as LS, N'Ring, and VIR (at least per C&D Lightning Lap) are held by manual rwd cars such as the Viper and Corvette, btw. Doesn't seem like RWD is holding these cars back much to me.