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Supercharged and Turbocharged LT7 in ZR1

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Old 04-24-2024, 04:37 AM
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switchlanez
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Default Supercharged and Turbocharged LT7 in ZR1

Sounds rather *UNTHINKABLE* but this guy proposes some compelling evidence that supports his argument.

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04-24-2024, 07:34 PM
SharkDiverZ06
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Originally Posted by BooSSted
Hybrid , electric for the advantage of immediate power with turbo(s) taking over.. Think it's all but confirmed it'll be turbo'd .. will be interesting to see the numbers. If it's AWD I will definitely be getting one.
Whatever happened to the days when everyone wanted a smaller, lighter Corvette? I want a $200k, 4000lb ZR1 like I want another hole in the head.
Old 04-24-2024, 05:29 AM
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23/C8Z
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Too much heat and complexity for something not necessary.

I could see a hybrid assist the engine like Lamborghini just did but I doubt both SC and TC.

I do think that exhaust clip sounded like a muffled fpc.

And not in a good way. So turbocharged 99.9%
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Old 04-24-2024, 07:36 AM
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Big Lebowski
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My Volvo XC90 was both supercharged and turbo charged. Only way they could coax that 4-cylinder engine to accelerate. My point is, while it’s possible it seems unlikely Chevy would need to do that due to the number of engines they could start with. Twin turbo LT6 or electric hybrid LT6 would be a rocket. 🚀
Old 04-24-2024, 07:38 AM
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Originally Posted by 23/C8Z
Too much heat and complexity for something not necessary.
Great response and you nailed it. GM would just use bigger turbos or a bigger S/C setup instead of a piggyback system.
Old 04-24-2024, 11:09 AM
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KCC8
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Originally Posted by Big Lebowski
My Volvo XC90 was both supercharged and turbo charged. Only way they could coax that 4-cylinder engine to accelerate. My point is, while it’s possible it seems unlikely Chevy would need to do that due to the number of engines they could start with. Twin turbo LT6 or electric hybrid LT6 would be a rocket. 🚀
my wife and I LOVE our XC90 with the twin charged 2.0l. It really is a marvel. I don’t think ZR1 will go there as a 5.5l V8 has plenty of torque without a supercharger (versus a 2.0 L 4) down low.
Old 04-24-2024, 11:17 AM
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I say no from a packaging and servicing point of view alone. Also, they won't need to twin charge it to achieve their mid-800 hp goal. TT will be plenty. Adding a SC would only increase complexity and add weight. LT7 will be a TT 5.5L crossplane DOHC V8 revving in the 7k range.
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Old 04-24-2024, 11:23 AM
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vegasredz062
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it will be TT .. stupid theory! click bait nonsense.

the only thing I want to know is will it be AWD..
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Old 04-24-2024, 11:32 AM
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Originally Posted by vegasredz062
it will be TT .. stupid theory! click bait nonsense.

the only thing I want to know is will it be AWD..
I honestly think it will be RWD. I don't think we will see AWD until Zora.
Old 04-24-2024, 11:47 AM
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I think the unthinkable is the turbocharging part.
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Old 04-24-2024, 12:54 PM
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If the patent is truly groundbreaking, it could be a novel dual charger solution that mitigates heat and complexity concerns and defies these conventional criticisms.
Old 04-24-2024, 02:23 PM
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ChevyChad
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It is obvious a lot of responders here did not watch the video.

While i think its a huge stretch, the guy does make some good points.

And for those of you who did not watch, one little tidbit of info was that GM filed a patent for a dual charger engine with both a turbocharger and an electric supercharger with a CVT transmission. Definitely a unique and novel idea.

I'm still skeptical of this theory because we already have CAD leaks of a twin turbo DOHC C8 setup.
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Old 04-24-2024, 02:24 PM
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Hybrid , electric for the advantage of immediate power with turbo(s) taking over.. Think it's all but confirmed it'll be turbo'd .. will be interesting to see the numbers. If it's AWD I will definitely be getting one.
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Old 04-24-2024, 02:41 PM
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What are everyone's thoughts on the leaked "SC TURBO" engine listing and how the guy dispelled it being a spoof by GM?

Old 04-24-2024, 03:28 PM
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skank
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We have been informed that GM President Mark Reuss commented during a Dealer preview of the ZR1 that the LT7 engine was turbocharged. Looking at the Code Name Zerv leaked CAD files showing the LT7 engine we can clearly see that the Turbo's appear to be dual stage turbos down low. We can also see what appears to be 3D printed air plenum tubes that are approximately 4-5 inches in diameter at the blue air box and 2-3 inches in diameter where they connect to the dual stage turbos. Looking at that plenum tube that starts at a larger cross section of air volume being reduced progressively through the entire length at a constant reduced rate until it connects to the turbo. That of course is compressing cold air during that length which is essentially a supercharging (Cold air) process. I'm not sure if those two curved tubes wrapping around each side of that LT7 would be a precision casting or would it be 3D printed. I assume the interior of those tubes would have to be ultra smooth for low air friction. All fun conjecture on my part where we will find out soon enough !

Last edited by skank; 04-24-2024 at 03:55 PM.
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Old 04-24-2024, 03:53 PM
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Old 04-24-2024, 04:28 PM
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It also looks like a DOHC and not pushrod.
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Old 04-24-2024, 04:52 PM
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skank
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I do believe creating a plenum tube like what's shown on the CAD file image can only be done with 3D printing. Think about accuracy of a progressively reduced conical shaped tube that is the bending and deforming its shape into a progressive ellipse shape then returning to a perfectly round shape on either end. Then polishing the internal surface to a smooth mirror like finish using magnetic polishing grit. This is getting into Formula 1 type technologies !

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To Supercharged and Turbocharged LT7 in ZR1

Old 04-24-2024, 06:58 PM
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JMB
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Originally Posted by ChevyChad
It is obvious a lot of responders here did not watch the video.

While i think its a huge stretch, the guy does make some good points.

And for those of you who did not watch, one little tidbit of info was that GM filed a patent for a dual charger engine with both a turbocharger and an electric supercharger with a CVT transmission. Definitely a unique and novel idea.

I'm still skeptical of this theory because we already have CAD leaks of a twin turbo DOHC C8 setup.
GM might use this technology on an econobox 2.0L with no torque but not on an LT7 lol....the LT7 will have zero problems blasting out torque in the 650 to 700 lb ft range with just a pair of turbos!
Old 04-24-2024, 07:34 PM
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SharkDiverZ06
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Originally Posted by BooSSted
Hybrid , electric for the advantage of immediate power with turbo(s) taking over.. Think it's all but confirmed it'll be turbo'd .. will be interesting to see the numbers. If it's AWD I will definitely be getting one.
Whatever happened to the days when everyone wanted a smaller, lighter Corvette? I want a $200k, 4000lb ZR1 like I want another hole in the head.
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Old 04-25-2024, 01:07 AM
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Michael A
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Originally Posted by skank
We have been informed that GM President Mark Reuss commented during a Dealer preview of the ZR1 that the LT7 engine was turbocharged. Looking at the Code Name Zerv leaked CAD files showing the LT7 engine we can clearly see that the Turbo's appear to be dual stage turbos down low.
Dual stage? No.


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