new doch 32 valve vette engine on its way

[Karl]

https://www.yahoo.com/news/2018-corvette-getting-dohc-v-181702787.html

This changes things a lot.

[ghlkal]

Yup, when you look at the picture in the article, be sure to read the disclaimer at the bottom ...

(Yes, we know that's the current Corvette motor pictured above. We obviously didn't have a picture of an engine GM hasn't officially announced yet.)

[oricale]

Hmmmmm.....🤔....new Merc DOHC?...

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[george1945]

Hmm mm mm. We see quite a few 600hp motors running around in the LT5 platform and with a bit of GM cash infusion, it is not hard to immagine a lighter version pumping out a few more horses. Hope I live long enough to see that happen.

[LGAFF]

November of 2015 I put this in the "Ask Tadge" Section of the Corvette Forum LOL

http://www.corvetteforum.com/forums/ask-tadge/3739170-stars-are-aligned-for-dohc-zr-1-a.html

[tpepmeie]

I've been alluding to this connection for awhile. I have some contacts at Cosworth, but they stopped short of naming the exact application. The timing and volumes fit perfectly with the new LT5, though.

http://www.carscoops.com/2016/05/cosworth-to-build-v8-manufacturing.html

[LGAFF]

The must be swinging for insane #s if they went with a 6.2L...This car is going to make Bugatti type numbers tuned. Think about the Slegehammer making 898hp with a 5.7L back in the 80s.

If you are Reeves Callaway you have to be saying to yourself...you see I had it right back in the 80s, turbos are the way to go. Now everyone had TT cars.

[XfireZ51]

How about that!! Something in common w future generation of, dare we say,
ZR1s. Maybe?

[Hog]

I've been alluding to this connection for awhile. I have some contacts at Cosworth, but they stopped short of naming the exact application. The timing and volumes fit perfectly with the new LT5, though.

http://www.carscoops.com/2016/05/cosworth-to-build-v8-manufacturing.html

Instead on Lotus/Mercuiser, we have Cosworth? Or maybe Cosworth design, Merc manuture Chev? Vely intelesting.

I just hope that people aren't mis-interpreting TT V8's for Cadillac usage.

[LGAFF]

This could be the B2K LT-5 lol

[XfireZ51]

MMR was showing off a 6.2L DOHC LSx motor w 750hp N/A. Being able to get 720hp in NA form would simplify the packaging and stress on the motor. Could even pay for itself in weight savings when considering the additional cooling capacity needed on the FI Z06 LT4 motors.

[Hog]

This could be the B2K LT-5 lol

Isnt that a cool thought!

[cvette98pacecar]

https://www.yahoo.com/news/2018-corvette-getting-dohc-v-181702787.html

This changes things a lot.

Until we show that the ZR-1 is a Legacy Vehicle or cars are not going to be valued by the Corvette Community. The Reason the Grand Sport is sought after is due to the fact that it is a legacy vehicle.

http://www.corvetteonline.com/features/the-most-valuable-corvettes-ever-built/

Hmmmmm.....��....new Merc DOHC?...

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Do you seriously think Mercruiser was developing a small block 4 cam head when they have a big block 1600HP LT5?

What if the new car comes out with the ZR1 moniker? Is it not a ZR-1 because there is no Hyphen in the moniker?

Just like Dave McLellan said, It is a Corvette just more so.

[spork2367]

Until we show that the ZR-1 is a Legacy Vehicle or cars are not going to be valued by the Corvette Community. The Reason the Grand Sport is sought after is due to the fact that it is a legacy vehicle.

I don't think that's the mitigating factor. They only made 1000 total in one year. And even at that, the average price is still only 32,000.

[Mystic ZR-1]

I don't think that's the mitigating factor. They only made 1000 total in one year. And even at that, the average price is still only 32,000.

1000 paint jobs....

[spork2367]

1000 paint jobs....

Which along with several other options, made the grand sport package. So they made 1000 grand sports. Am I missing something?

[BigJohn]

Which along with several other options, made the grand sport package. So they made 1000 grand sports. Am I missing something?

Yep,
The Grandsports for 1996 were just wheels and paint.
Even the paint color of the Grandsports wasn't popular without the white stripe.
The LT4 engine was in every 1996 Corvette with a manual transmission.

:flag2:

[DRM500RUBYZR-1]

I don't think that's the mitigating factor. They only made 1000 total in one year. And even at that, the average price is still only 32,000.

While the average may only be 32k, their original cost was likely around 50k.
That remains a much better proportionate value than the 64-69k ZR-1 with it's lower current average.
C-4 Grand sports were popular the day that they came out, and have stayed that way through today.
It caught me by surprise back then, but not any more.
Say what you want about it only being paint, but the cars, as already said, have remained strong in price since their introduction.
With only 1,000 made, that would suggest a strong likelihood that the demand will remain, and therefore keep the prices strong.
:cheers:
Marty

[DRM500RUBYZR-1]

Until we show that the ZR-1 is a Legacy Vehicle or cars are not going to be valued by the Corvette Community. The Reason the Grand Sport is sought after is due to the fact that it is a legacy vehicle.

http://www.corvetteonline.com/features/the-most-valuable-corvettes-ever-built/



Do you seriously think Mercruiser was developing a small block 4 cam head when they have a big block 1600HP LT5?

What if the new car comes out with the ZR1 moniker? Is it not a ZR-1 because there is no Hyphen in the moniker?

Just like Dave McLellan said, It is a Corvette just more so.


Comments on the CNN Article.

First; CNN has proven over the years to be less than the authority on many topics, let alone investments, and even more particular, investments in automobiles.

As others have pointed out, the uniqueness of the car, as cited by the articles author, is it's paint scheme. All else is the same with any 96 LT-4 car. To then base the future value on the fact that there are only 1,000 of them, may reach the correct conclusion, BUT for the wrong reason.
If numbers are the determinant of value, than would not any "paint scheme" that is rare also be a good investment. Certainly there are Corvettes made in colors with far fewer numbers than the GS, does this mean they are the best investments?

You look further at his other choices, and they are based on rarity and POWER, but most of all Price SOLD.
There seems to be a HUGE gap between the 96.5k 62 fuelie and the 40k GS.
No 427 435'S?
No C-2 396's?
No 63 SWC's?
No C-6 ZR1's?

Where are the 58's?

Sorry.
As with much of their "news", it is more personal opinion than factual news.
Sad to say, their opining is no more correct than any one else including me, but I at least refer to mine as opinion, not news.

I continue to point out that I remain a fan of the C-4 GS, just think that to overlook C-4 ZR-1's or the 1 millionth Corvette, or the others listed above, and more, are weaknesses that cannot be overlooked.

Remember, they got the election wrong also.
:cheers:
Marty

[George45]

Not that I am complaining about my ZR1s and the fact they seemingly go unrecognised, but there Is really little to draw the average person to them. They are for all Intended purpose a slightly beefed up C4 with an engine that few backyard enthusiast are capable of working on. I mean just how difficult is it to jerk a manifold or heads off a LT1? How hard is it to install a new bump stick? What we have is a Unique piece of history with a very unique power plant that can be difficult to service. Without exception there are few capable of of properly servicing our cars and some parts are just not available. But walk in to a local big box auto parts store and you walk out with an arm load for your 1958 Vetted. The 90-95 ZR1s are a niche. We are dinosaurs. But I would have it no other way. It is the unique that drew me. It is the difficulty that attracts me. It is the wealth of information in our community that keeps me.It is a car that has yet to be fully appreciated by the masses.and it may never be. Does that bother me? No. I will continue my fascination with the car and the spirit it brings to me when driven and the pleasure it gives to just pull the cover off during the winter months and think of the summer.

[XfireZ51]

I've been alluding to this connection for awhile. I have some contacts at Cosworth, but they stopped short of naming the exact application. The timing and volumes fit perfectly with the new LT5, though.

http://www.carscoops.com/2016/05/cosworth-to-build-v8-manufacturing.html

Todd,

Would this suggest that there is a certain Englishman involved w this project who may have previous knowledge of DOHC motors in Corvettes?

[George45]

That could really be interesting.

[tpepmeie]

No


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[XfireZ51]

No


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Took a SWAG!

[Ryan Chappel]

Todd,

Would this suggest that there is a certain Englishman involved w this project who may have previous knowledge of DOHC motors in Corvettes?
I would have come to the same conclusion/supposition/wildass speculation!!:handshak:

[Karl]

Yep,
The Grandsports for 1996 were just wheels and paint.
Even the paint color of the Grandsports wasn't popular without the white stripe.
The LT4 engine was in every 1996 Corvette with a manual transmission.

:flag2:

It baffles me to this day that the grand sport is more sought after and has such a high resale value.

There is nothing special about the car, period.

I do not consider paint, wheels, and a cool name special at all.

[rush91]

Whatever it is, does anyone think it will reach the hype our LT5s back in the day?? One has to remember how earth shattering in the automotive world our cars were.....the LT5s had no equal, European or Domestic until the Viper?? I'm excited, but no where near where I was in '89 - '90. It took me 25 years to get my first LT5. maybe in another 25 I will park the newer version next to its Grand dad in the garage.......

[Karl]

Whatever it is, does anyone think it will reach the hype our LT5s back in the day??

No. Biggest surprise may be if GM abandons the traditional pushrod engine like ford did in its manufactured vehicles.

[XfireZ51]

No. Biggest surprise may be if GM abandons the traditional pushrod engine like ford did in its manufactured vehicles.

I can't see that they would. The LTs OHV motors work just fine.

[Karl]

I can't see that they would. The LTs OHV motors work just fine.

Ford did it, why wouldn't GM? They try to keep the cost of their sports cars down by sharing the same basic engine as their truck line up.

The LS motors are great, but would be even better with 4 cams & 32 valves. Isn't that what mercury marine did with their bolt on heads?

[BigJohn]

I guess you need to buy a ford!

[spork2367]

As others have pointed out, the uniqueness of the car, as cited by the articles author, is it's paint scheme. All else is the same with any 96 LT-4 car. To then base the future value on the fact that there are only 1,000 of them, may reach the correct conclusion, BUT for the wrong reason.
If numbers are the determinant of value, than would not any "paint scheme" that is rare also be a good investment. Certainly there are Corvettes made in colors with far fewer numbers than the GS, does this mean they are the best investments?

You look further at his other choices, and they are based on rarity and POWER, but most of all Price SOLD.
There seems to be a HUGE gap between the 96.5k 62 fuelie and the 40k GS.
No 427 435'S?
No C-2 396's?
No 63 SWC's?
No C-6 ZR1's?

Where are the 58's?

Sorry.
As with much of their "news", it is more personal opinion than factual news.
Sad to say, their opining is no more correct than any one else including me, but I at least refer to mine as opinion, not news.

I continue to point out that I remain a fan of the C-4 GS, just think that to overlook C-4 ZR-1's or the 1 millionth Corvette, or the others listed above, and more, are weaknesses that cannot be overlooked.

Remember, they got the election wrong also.
:cheers:
Marty

Except that the paint isn't the only unique feature. It's the flares, wheels/tires, and specific combo of options with the paint. And it's the name. Which is why just a rare color isn't a fair comparison.
In terms of why the grand sport has retained more value than the zr1, as a percentage of original cost...It's the name, with the options, with the fact that the engines are easily worked on and repaired, with the fact that there were only 1000 in one year vs, what, 6600 over 5 years. Keep in mind we're making a comparison in the world of c4's, the least desirable generation. Go back even one generation and comparisons to c4's become much more abstract.

And grand sports still aren't worth a lot.

https://www.ebay.com/itm/282302957643

[BigJohn]

Heck even my Camaro has an LT4!

[DRM500RUBYZR-1]

Except that the paint isn't the only unique feature. It's the flares, wheels/tires, and specific combo of options with the paint. And it's the name. Which is why just a rare color isn't a fair comparison.
In terms of why the grand sport has retained more value than the zr1, as a percentage of original cost...It's the name, with the options, with the fact that the engines are easily worked on and repaired, with the fact that there were only 1000 in one year vs, what, 6600 over 5 years. Keep in mind we're making a comparison in the world of c4's, the least desirable generation. Go back even one generation and comparisons to c4's become much more abstract.

And grand sports still aren't worth a lot.

https://www.ebay.com/itm/282302957643

I cannot think of very many 1996 cars that have a realistic asking price that is close to 75% of the MSRP today.
That may not be a lot in your book, but it sure is in mine.

Ferraris and Lamborghinis have engines every bit as complex as the ZR-1, that backyard mechanics wouldn't touch even if they could afford them. Parts are rare too.
However, I don't hear that as any reason cited for not paying up for those cars, or having an effect on overall pricing.

You also make an assumption that C-4's will somehow always remain the least desirable generation.
Not as sure as you about that.
Let's re-visit it in 20 years!
The same thing was once said about C-3's years back.
It took a long while to change, but change it did.

Happy New Year!
:cheers:
Marty

[DRM500RUBYZR-1]

Heck even my Camaro has an LT4!

:sign10:

Happy New Year!
:cheers:
Marty

[twowire]

Not sure if you guys already seen this post from CF, but it shows the official GM letter with LT5 listed. Several post say the LT5 will never fit into the C7.
The c4 LT5 dimensions are around 27" wide, 27" long, and 26-1/6" high, but don't know what the physical dimensions are of the LT4 motor itself?
Also, those spy shots on you tube of the front engine 2018 ZR1 (raised hood) - in Colorado, they seemed to sound like an LT5 - check out the youtube link below for the sound.

http://www.corvetteforum.com/forums/c7-general-discussion/3921557-lt5-for-2018-already.html


https://www.youtube.com/watch?v=ZPiNMFKIsz8

[S.hafsmo]

In purely practical terms I'd say it would be rather annoying if they were to label it LT5. It's already annoying not being able to search for ZR-1 anywhere, without only finding C6's and such.

[BigJohn]

Such???

[S.hafsmo]

Googling C7 ZR1 currently gives 422 000 results. Not too many on Ebay, though. :)

[BigJohn]

Is it not that the new ZR1 will be a C8!

[S.hafsmo]

Forgive me for being unclear. My point was only that the three letters "LT5" is currently unique for the Corvette C4 ZR-1, and pretty much the only thing unique one could use to identify it. Googling LT5 now, gives a wealth of information regarding these vehicles, but if the next gen. Z were to use the same lettering, this would change quite rapidly. Similar to doing a ZR-1 search these days. What's relevant for our cars become diluted in the masses of information regarding the new car(s).

[BigJohn]

LT5 is licensed by GM they can do anything they want with it.
I love my car and GM can not devalue it in any way!

[Mystic ZR-1]

They can use ZR-1 (with or without the -) and LT5 all they want.
There's only one...!
(the C3 & 6 weren't too bad though, even
though they had only one cam...)
If "they" don't get it", it's their loss!

[BigJohn]

Loss what???
Who are they???
Let us just drive them and enjoy them!!!

[XfireZ51]

At the end of the day, LT5 and ZR1 is whatever GM wants it to be and there really isn't anything we can do about it. From the sound of things however, there are still people in the Corvette group that have a soft spot for our cars. And as we had hoped, it looks like they are retaining the LT5 designation for a DOHC v8.
And that means more people are going to be interested in the legacy of that motor.

[tf95ZR1]

http://www.motortrend.com/news/gm-document-hints-2018-chevrolet-corvette-will-get-dohc-6-2l-lt5-v-8/?wc_mid=4035:4718&wc_rid=4035:1896853&_wcsid=6AD04A5DEDAF54BC126522EAB2C8C7A9D47D97105B3 00C2D

[FU]

Let us just drive them and enjoy them!!!


=D> My suggestion also.

[XfireZ51]

http://www.motortrend.com/news/gm-document-hints-2018-chevrolet-corvette-will-get-dohc-6-2l-lt5-v-8/?wc_mid=4035:4718&wc_rid=4035:1896853&_wcsid=6AD04A5DEDAF54BC126522EAB2C8C7A9D47D97105B3 00C2D


Could we be looking at a flat plane crank motor? There's been some comment regarding the exhaust note coming from these ZR prototypes out there.

[tpepmeie]

Could we be looking at a flat plane crank motor? There's been some comment regarding the exhaust note coming from these ZR prototypes out there.



Not a chance at 6.2L and subject to production durability and nvh requirements.

Flat plane cranks are best reserved for sub 3.5" stroke.



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[XfireZ51]

Not a chance at 6.2L and subject to production durability and nvh requirements.

Flat plane cranks are best reserved for sub 3.5" stroke.



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Todd,

The 5.2L Voodoo is a 3.6496"(92.7mm) stroke. I think Sam here is running a flat plane in a 385. I'm just speculating.