Corvette C7

[Cale]

Proof and pics or bull.

Not worth risking someone's job. On Fast-autos someone took pictures of a "blue Devil" prototype when his shipping company had to transport it for GM. GM found out, and ordered the people working at the time be fired.

 

[marluxiaXI11]

EWWW DOHC. Yuck.

They already made a DOHC Corvette.

 

[Carlos]

Not worth risking someone's job. On Fast-autos someone took pictures of a "blue Devil" prototype when his shipping company had to transport it for GM. GM found out, and ordered the people working at the time be fired.

Ouch...

 

[Tornado]

Or that time when GM was trying to keep the details of the launch of Saturn on the hush-hush. Automobile magazines found out about them and reported them and GM brought in the FBI to try and find out who leaked the information.

 

[RocZX]

They're also doing a model called the z08, the prototype shop my dad works for is doing the front fenders for the first 6 prototype models

Wasn't the Z08 the name for the new ZR1 then they changed it?

 

[Slash]

Not worth risking someone's job. On Fast-autos someone took pictures of a "blue Devil" prototype when his shipping company had to transport it for GM. GM found out, and ordered the people working at the time be fired.

Guess you're right.

They already made a DOHC Corvette.

I know.

 

[ShobThaBob]

I know.

It was also incredibly sturdy, so why the issue with it?

 

[Rotary Junkie]

I was serious in that one. Also, they need a DOHC V8 >:3

I agree. They've done a good job with the LS motor but generally, having 4 valves per cylinder is good for making a torque curve flatter and wider than Texas. 2 valve motors can make power but only over a relatively narrow range in comparison.

It was also incredibly sturdy, so why the issue with it?

Slashfan thinks 1955 was the best year for automobiles and everything since has been downhill.

Never mind the fact he can't even claim simplicity as the reason; OHV setups are a very Rube Goldberg-esque system of valvetrain control with a lot more crap getting jiggled around to do something that really only needs a cam and a rocker. Or just a cam.

 

[Tornado]

Hating on the LT5 should be a crime punishable by death. Just like it already is for the VR6.

 

[Beeblebrox237]

The OHV design is slightly lighter and has a lower centre of mass. That said, SOHC or DOHC layouts would allow better fuel economy and more power through better breathing and variable valve timing. I'm in favour of a DOHC V-8 for the 'Vette.

 

[Slash]

It was also incredibly sturdy, so why the issue with it?

No issue, I'm just not a fan of the design. Personal opinion. The benefits would be phenomenal however.

I agree. They've done a good job with the LS motor but generally, having 4 valves per cylinder is good for making a torque curve flatter and wider than Texas. 2 valve motors can make power but only over a relatively narrow range in comparison.



Slashfan thinks 1955 was the best year for automobiles and everything since has been downhill.

Never mind the fact he can't even claim simplicity as the reason; OHV setups are a very Rube Goldberg-esque system of valvetrain control with a lot more crap getting jiggled around to do something that really only needs a cam and a rocker. Or just a cam.

No, I don't.

 

[Keef]

I agree. They've done a good job with the LS motor but generally, having 4 valves per cylinder is good for making a torque curve flatter and wider than Texas. 2 valve motors can make power but only over a relatively narrow range in comparison.

They're also much heavier and much taller. A DOHC V8 would not fit under the Corvette's current hood and still meet crumble zone standards. That would make the car look awkward and raise the center of gravity. The engines are also more expensive to manufacture, especially when the one you already have is basically the same as all your other V8s in your stable.

 

[Rotary Junkie]

They're also much heavier and much taller. A DOHC V8 would not fit under the Corvette's current hood and still meet crumble zone standards. That would make the car look awkward and raise the center of gravity. The engines are also more expensive to manufacture, especially when the one you already have is basically the same as all your other V8s in your stable.

This is true, all of it. But GM was already talking about downsizing the engine. Take an inch off the stroke and you get to take somewhere around 2-2.5" off deck height. If they really wanted to, they could make a 4.4L DOHC V8 still using the LS motor's bore spacing with 3-4" shorter deck height, more than counteracting the DOHC balooning. Of course, it'd also want to rev past the moon with the flow characteristics you could get from a 4.125" bore with 4 valve heads and how short the stroke would be, but hey.

 

[Tornado]

I'd like another Corvette that can rev to 7 grand and just be happy there all day...

 

[Bopop4]

I'd like another Corvette that can rev to 7 grand and just be happy there all day...

+1

When I first heard the 427/7.0 I thought that it was WAY too tame for a Corvette, even running flat-out it is still too tame.

The older 350/5.7 had to be tuned much higher than the big motor and so it revs higher, and it sounds the part. A Corvette should sound like a fire spitting monster.

 

[Cale]

+1

When I first heard the 427/7.0 I thought that it was WAY too tame for a Corvette, even running flat-out it is still too tame.

The older 350/5.7 had to be tuned much higher than the big motor and so it revs higher, and it sounds the part. A Corvette should sound like a fire spitting monster.

You must have never heard the LS7.



Might be the best sounding engine on sale.

The LS7 redline is 7000rpm and the fuel cut off is 7500rpm. Compare that to the LS3/LS9 which redline ~6300rpm.

 

[DarkAvengerZR1]

^ This.

 

[Keef]

This is true, all of it. But GM was already talking about downsizing the engine. Take an inch off the stroke and you get to take somewhere around 2-2.5" off deck height. If they really wanted to, they could make a 4.4L DOHC V8 still using the LS motor's bore spacing with 3-4" shorter deck height, more than counteracting the DOHC balooning. Of course, it'd also want to rev past the moon with the flow characteristics you could get from a 4.125" bore with 4 valve heads and how short the stroke would be, but hey.

The new engine is going to be 5.5 liters.

 

[Cale]

The new engine is going to be 5.5 liters.

That's what the automotive press wants to think. GM has hinted at what will probably be an updated LS3. Keeping displacement the same, but increasing power and efficiency.

 

[Bopop4]

The new engine is going to be 5.5 liters.

That'll make it sound better. 👍

You must have never heard the LS7.



Might be the best sounding engine on sale.

The LS7 redline is 7000rpm and the fuel cut off is 7500rpm. Compare that to the LS3/LS9 which redline ~6300rpm.

That's better, but it still has a sound to it that I just do not like, it doesn't have the scream of the 350.


(It is modified, but I hear a bit of that in every Corvette 350.)

 

[Cale]

Like this @ 57s.

 

[Bopop4]

Yes, because 6.0L.

 

[Cale]

No... that's an LS7.

It really doesn't matter which Corvette you get, you can buy parts that produce that higher pitched sound.

 

[Bopop4]

Whaa..!?!

My mistake, and you're right, but I still would much prefer the note of a 350.

 

[YSSMAN]

The new engine is going to be 5.5 liters.

Probably. Seeing as how that is what the FIA-regulated cars run in the racing series, it would make sense to transfer that engineering over to the street cars. That being said, we're a year behind on when the Gen IV small-blocks were supposed to debut.

Everything we've ever heard is OHV, direct-injection, E85-capable, aluminum construction. It's still up in the air whether or not the engines will be that different between the trucks and the cars.

 

[RocZX]

A other rendering of the C7

 

[zedextreme8177]

Who in the world got that idea for a render?

It looks more Cadillac than Chevy as well!

 

[Nessy]

I actually quite like that render, reminds me of a 70's Vette. 👍
I hope it turns out like that ^, rather than the ugly slabbed rear model/renders we've been seeing.

 

[Shoe67]

That almost looks like a combo of a 599 and a stingray vette

 

[Keef]

Probably. Seeing as how that is what the FIA-regulated cars run in the racing series, it would make sense to transfer that engineering over to the street cars. That being said, we're a year behind on when the Gen IV small-blocks were supposed to debut.

Everything we've ever heard is OHV, direct-injection, E85-capable, aluminum construction. It's still up in the air whether or not the engines will be that different between the trucks and the cars.

I heard it from a DMAX engineer so iono.