I think painting some of the black trim to the same as the body color would help a lot. This thing is covered in gingerbread.
I wonder if Callaway or someone similar could put in a long sunroof on the coupe, basically like the recent 911 Targa models. The convertible C8 looks kind of meh to me.
Amazing power numbers from a 5.5! Highest output NA V8 of all time. Apparently it shook the oil filter off during testing it's so rough. They had to switch to canister style according to one mag I read.
I won't be surprised if this is a maintenance nightmare, but hey, that makes it more exotic!
Opti
Dork
10/28/21 8:06 a.m.
Im really excited about this, but I think they missed the boat on calling it the LT6. It probably should have been named the LT5 ala the C4 DOHC engine.
Im hoping GM is smart enough to have learned from Ford with the Voodoo, but if not, they will probably release all the good stuff with the base engine in a Grand Sport for people that actually want to track them, and dont want a super exotic motor
tuna55
MegaDork
10/28/21 8:37 a.m.
Opti said:
Im really excited about this, but I think they missed the boat on calling it the LT6. It probably should have been named the LT5 ala the C4 DOHC engine.
Im hoping GM is smart enough to have learned from Ford with the Voodoo, but if not, they will probably release all the good stuff with the base engine in a Grand Sport for people that actually want to track them, and dont want a super exotic motor
They already used the LT5 briefly, but otherwise I think you're right. Maybe the LT5'
Opti
Dork
10/28/21 8:52 a.m.
In reply to tuna55 :
Thats right. The C7 Zr1 was LT5, I forgot about that one.
The recycling of old engine designations is dumb to me. I got an LT1. Which one? The original, the stepchild, or the LS?
Imagine an electric Toyota with a motor designated 2JZ? Its confusing and unimaginative.
Engine is cool. Name is dumb.
In reply to Appleseed :
I tend to agree with this when there are so many differing names for GM engines already. Even in the LS family there are two dozen at least! Why recycle when you're already dumping alphabet soup on everyone.
Appleseed said:
The recycling of old engine designations is dumb to me. I got an LT1. Which one? The original, the stepchild, or the LS?
Imagine an electric Toyota with a motor designated 2JZ? Its confusing and unimaginative.
Engine is cool. Name is dumb.
Which LS, the aluminum engine from the 90s or the big block engines from the 70s?
The LS6 got its name for a very specific reason.
Pete. (l33t FS) said:
130+ horsepower per liter! Criminy.
That's so cute...my 2005 RX-8 made 181.5 Hp per liter.
I wonder how long until someone slaps that shiny new 632 in one of these..
They could call it the Z0632.
In reply to Pete.
See how easy it is to never be 100% sure which engine we're talking about?
Pete. (l33t FS) said:
The LS6 got its name for a very specific reason.
Because GM likes to reuse RPO codes.
flat plane v8s are set up like 2 4 cylinder engines, the plenums will be independent at times and the butterflies between them will play with the volume and resonance on demand. I can't see why a flat plane crank is any worse, Ferrari etc have made them for years,
We were joking at work yesterday about how GM has managed to duplicate the VICS system that was introduced in the Miata in 1998 :) It had butterflies that increased the volume of the plenum. Interestingly, it wasn't for a shorter intake tract like people assume, it was more of a resonance chamber. And you could see the effects on the dyno.
buzzboy
SuperDork
10/29/21 11:51 a.m.
z31maniac said:
Pete. (l33t FS) said:
RX Reven' said:
Pete. (l33t FS) said:
130+ horsepower per liter! Criminy.
That's so cute...my 2005 RX-8 made 181.5 Hp per liter.
471hp? Cool!
Renesis is 2.6 L.
I'm calling it a 3.9 which makes it 544hp! Dang!
buzzboy said:
z31maniac said:
Pete. (l33t FS) said:
RX Reven' said:
Pete. (l33t FS) said:
130+ horsepower per liter! Criminy.
That's so cute...my 2005 RX-8 made 181.5 Hp per liter.
471hp? Cool!
Renesis is 2.6 L.
I'm calling it a 3.9 which makes it 544hp! Dang!
Am I missing something here?
You're missing the long-standing disagreement about how to measure displacement of a rotary :)
In reply to Keith Tanner :
One thing we can all agree on is that its probably already broken.
What a car. I like the orange. Shoulda just used the C8.R bodywork :D
On the engine subject: the mid engined Corvette is a badass race car, but I gotta say I miss the old school V8 rumble of the C7 racecars
BlueInGreen - Jon said:
What a car. I like the orange. Shoulda just used the C8.R bodywork :D
On the engine subject: the mid engined Corvette is a badass race car, but I gotta say I miss the old school V8 rumble of the C7 racecars
Wouldn't be surprised if a "C8.R" edition came out with similar livery, they kinda already did this with the C8 IMSA edition.
https://gmauthority.com/blog/2021/06/heres-who-the-2022-corvette-stingray-imsa-gtlm-special-edition-is-for/
Can't wait for what's next with this, not that I or most anyone on the GRM forum is a potential customer (is anyone planning on buying one??). Rumors are abound, but using common sense here: why would GM spend millions to develop a bespoke flat plane V8 and only have one variant? There will likely be more variants coming, 670HP is just the start.
Pete. (l33t FS) said:
ProDarwin said:
Is it weird that the alternator isn't vented in any way? How is it cooled?
I am assuming water cooled, which is getting to be not uncommon on newer mega-amp alternators. Practically speaking, in this car, it probably gets no meaningful airflow for the fan to move around. An alternator fan might just recirculate the same air that it just vented.
There are engine compartment fans that flow quite a bit of air, so liquid cooled is not necessarily a given.
https://www.thedrive.com/news/42896/heres-everything-corvette-z06-engineers-did-to-beat-overheating-issues
Opti
Dork
11/1/21 9:50 a.m.
I believe when the engines leaked the zr1/Zora will also be the 5.5 with turbos. Don't know if it will be FPC but using the rest of it would be a good way to spread developmental costs out.
But when you're dealing with halo cars they can also be accounted as marketing and don't always have to make good business sense in just sales vs costs. Pretty much all manufacturers have done this and GM did it with a weird motor in the corvette in the 90s, the LT5, there was no other variants of that motor.
STM317
UberDork
11/1/21 10:46 a.m.
Opti said:
I believe when the engines leaked the zr1/Zora will also be the 5.5 with turbos. Don't know if it will be FPC but using the rest of it would be a good way to spread developmental costs out.
Definitely seems like the same basic architecture:
Combine that with the extra space in the nose of the C8 for an electric motor, and the space in the tunnel for a battery, and things could get pretty interesting.
But then again, GM recently killed a brand new, $16 million engine platform after putting it into a total of ~800 vehicles, sooooo......who knows.