mtaylor

I dont see a NA 6.2 making 720hp, 600 or so maybe. At 600-620hp it would be about the same hp/liter as the voodoo engine in the gt350.

16sedanSS

Certainly?
How so?


I doubt it.
Frankly, if there's a DOHC, it will be in the mid engine car.

jagamajajaran

Because the ZR1 is coming out as a MY 2018 and the mid engine car, if GM doesn't cancel production, is coming out as a MY 2019. The LT5 6.2 SIDI DOHC Corvette engine listed in GM's 2018 Passenger Car Engine Table is for the 2018 MY. There are other things I've picked up along the way too that will prove that I knew what I was talking about.

springer-

The thread was titled to emphasize the DOHC part of the engine not simply calling it a LT5. Nothing to do with whining moron.

rfhall11

Does anybody know for sure if there is going to be a mid-engine car?
If so, will it for sure be a Chevy?

I've seen lots of stuff in forums where the poster is positive about something and I knew different.

JK 23112

Can't vouch for the veracity of the story, but GM is supposedly "working on" a high-performance mid-engine coupe -- but that it was to be a Cadillac rather than a Chevrolet.

Is GM going to be able to regularly get 100k for a Corvette? Even if it beats a Porsche in almost every way, that's going to be way, way more than most 'Vette owners can afford. Right now, a Corvette Stingray is as expensive as a decked-out Silverado 4x4. How many will they sell if it costs more than a Freightliner road tractor?

I guess we'll have to wait and see. :-)

LT1 Z51

It doesn't fit in the FMR car. You are aware the hood would need to be raised 3-4 inches. Unless they have some sort of unheard of packaging miracle.

Engines BTW show up in the RPO system years before they get used. You need to see the "years used" column. I used to have to browse the system to write work orders (with E2) when I was a resident at GM.

Y is just a "platform code" at GM. The mid-engine is probably considered a derivative of the current Y-body platform. All Alphas have a platform code of A.

LT1 Z51

I don't buy that this list is Model Year dependent. GM's internal systems don't work that way. At least on the back end.

thegame

go get a tissue ya cry baby lmao

16sedanSS

How do you guys come up with this utter crap?
Lutz and Tadge are on record stating that mid-engine adds $5k to current costs.
If GM gives the Corvette a 911 price, people will just buy a 911.

GM can, and better, offer a base C8 with a mid-engine layout and a $55k MSRP.

16sedanSS

The LTx is a fine engine.
The LAST thing we need is DOHC.

What we do need, is a proper DCT, mid-engine, twin turbos, and the option of performance all wheel drive.
If GM is really doing DOHC before all of the above, they continue to push me towards a 911 Turbo.

JerriVette

I think the mid engine c8 will start around 62 ..

A dct would be cool.

Don't need awd but maybe in top model for huge money...I see a lithium ion battery powered front axle.

No need for dohc in base models...I fully expect the 4.0 liter twin turbo dohc v8 as top engine.

Dohc not even needed in top model but probably will to satisfy the euro snobs

Just a guess though

16sedanSS

jagamajajaran

Has GM been working on a mid engine vehicle? Yes.

Will GM actually produce a mid engine vehicle? It's still likely, but the project could also be terminated.

If it makes it to production, will the mid engine be a Corvette? Possibly. Or it could be a Cadillac.

You're correct about some who have been "positive" about something and the truth being something different. It's also likely that GM actually has people staffed whose job is to put out wrong information via social media and forums like this where you don't know the real source of the information.

jagamajajaran

What are your thoughts on the hood rise in these photos?

JerriVette

I'd suggest that is a supercharger hood.....probably the larger supercharger unit...not the 1.7 but rather the 2.3 sized unit...if I remember the specs correctly..

ZR1 will be supercharged LT motor...producing more power for the final farewell to the front engine corvette.....entering the new mid rear engine c8 a couple of years later.

JerryU

In fact GM defended the use of a pushrod V8 vs overhead cam for the C7 because it could fit under the required low profile hood!

Guess they could have used the old Chrysler slant 6 or the Offy DOHC 4 approach and angled the engine to get one to fit

jschindler

I'd be curious as to how you have come to that conclusion. I see no correlation between OHV vs OHC when it comes to meeting emissions.

There are many parameters when it comes to making power along with tradeoffs between high rpm power vs low/mid range torque. There has been a lot of new technology that changes historical "rules".

No question that there are some generalities. An engine is essentially an air pump. To get more power, you typically need either more displacement, more rpms, or forced induction. Everything else is just to increase efficiencies and to tweak the balance between peak power vs low rpm torque (there is that again).

There are many ways to control emissions and increase fuel mileage. I have yet to see a car with overhead cams or forced induction get appreciably better fuel economy than the Corvette with similar power in a similar type of car. Porsche is the best, but even they don't really offer much over the C7.

marcouvo

I think we will see a mid-engine Vette with an NA DOHC, 4 valve/cylinder 6.2 liter engine MY 19, from reading all of the above. Probably in the 600 HP range, MSRP $70K. This will be the base model car -- adding twin turbos for a Z06 model, 750 HP.

If there is a serious recession in the interim, probably won't happen.

MSG C5

This same "leaked" document also only lists the 2018 Corvette trims/models as Stingray, Grand Sport, and Z06 and there is no mention of the ZR1.

I interpret that to mean that the LT5 is being prepped for production in 2018 and will show up in a 2019 model as none of the cars listed in the document have the LT5 as an engine option. Some are speculating that will be in the mid-engine Zora or ZR1.

If so, I wonder if the test mule we've seen over the past six months will be a Z06X track package with the current LT4 tweaked to over 700HP with additional cooling and aero bits. Hopefully we will know for sure after the Detroit auto show next month.