mike100

Yet somehow that old 3500 lb C4 can keep up with a C6 LS2.

cclive

Don't get me wrong...it certainly was...I wouldn't dispute that. But $30,000 back then was like having a ZR1 today with a $100,000 engine option. It was indeed innovative, but it was so complicated that GM wasn't comfortable assembling it and had to farm out the assembly to Mercury Marine. I know that most of those ZR1s are sitting around being polished and shown at car shows, but I'll bet that repairs are extremely expensive also...especially on the ones that have seen 100K miles. At the end, a crate LS engine is around $6,000...imagine what a rebuild would cost on the LT5...I'm assuming there aren't any crates around but seems like at least $30K if they were sitting on a shelf somewhere.
I'm almost thinking that getting the same horsepower out of a much simpler and less expensive engine is an even greater accomplishment than getting it out of the LT5 was. Just rambling here....

9T3VETTE

I'm in total agreement that today the extra cost of the base C4 vs. C4 ZR1 option would not fly....However I go back to my original point that there have been significant advances in combustion development and manufacturing technology that have made what we have today possible at a more affordable cost. It's an apples to oranges comparison IMO.

With all that being said, I doubt we'll see a DOHC engine in the C7 ZR1 based on what they have achieved with a standard push rod motor.

irok

when my 05 LS2 was stock with stock tire it ran almost a full second quicker at 12.40 versus the typical ZR1's that I raced back in the day that ran 13.20 too 13.30's.not even close!!!!

mike100

A good one runs 12.90's at a high mph stock, but the gearing and powerband weren't great for out-of-the-hole type performance. The problem with LT5's were inconsistency with cam timing from the factory and the fact that they pulled timing like crazy because of octane. Point I'm making is the fact that a 5.7 car that weighs 3500 lbs can really keep up on a roll. The C4 is outclassed chassis-wise, no doubt, but the 32v engine architecture allows for much more power under the curve. I hope to see a modern one from GM with VVT.

I have an LS3 coupe. It is stout, but I wish it had more top end.

mike100

It isn't that bad...a guy had a longblock done up for $4500 recently. It is actually cheaper to jug them to 368 ci with 4" lines and pistons because the stock piston rings are getting scarce. There are definitely a few challenges here and there, but there are more engines than cars.

If GM has both LSx and dohc v8's at the same time, it will just end up being the same problem as with the LT5 rarity. They need economy of scale like the LS since they come in trucks and camaros. This is what will make the platform more successful.

jbc1995fb

I heard that the 2018 Corvette is really a C7 and should be posted there, not in C6 general.

Judgebull

The C8 Corvette will have a front engine with 525 Horsepower and will be a upgraded styling and mechanical version of the classical Corvette design. The midengine "Corvette" is not a Corvette at all but a new car altogether built to compete with the Ford GT40 and other high tech machines. It will use all the ultra tech materials and designs that are too costly for general production. The DOHC V8 will produce 725 horsepower and latter versions will approach the 1,000 horsepower mark, both will be supercharged. Production for the first year will be limited to 500 units and expanded as demand dictates. The name for the new ultra tech machine is still being discussed but will start with the letter "C" as do other Chevy machines.

LowRyter

Corvette ZORA

and Corvette Stingray.


two Corvettes. Don't over think it.

Grimlock13

They do share alot of parts. The whole front end and dash section of the boxter/cayman/911 are the same.

Boomer111

None of this matters for me cause I married for life the 2008 C6. First and only Corvette.

c6 monkey

2006 supercharged, cammed, methanol injected and married for life

TxLefty

No real reason for a DOHC unless you are trying to make power with a displacement limit. Packaging and weight are horrible compared to today's design. I'd be more inclined to put turbos on an LT4 with more displacement. Lots more power under the curve.

rkj427

unless anyone who has posted here works at GM or a supplier on the upcoming DOHC engine or next generation vehicles, all the information here is purely SPECULATION, rumor, and hypothetical......

sorry to burst your bubbles........... if GM wanted you to know, or if you had the need to know, you would have the information already..........

sorry for the rant, but is is getting pretty common and tiring of seeing these trivial, misinformed, theorized topics run any longer than one or two posts, NOT pages.............................

HOXXOH

But wait!!!! I positively know that my step-sister's ex-husband, who lives 3 houses away from one of the test driver's at the Yuma proving grounds, said he was drinking at the same bar and overheard that they were trying to solve the overheating issues with the mid-engine 5.5 L twin turbo that's going in the new Cadillac sports car. It concerned something about the 32 solenoids that operated the cam-less valves creating too much heat when above 8000 RPM.
And that's a fact Jack.

ruxvette

Jeez, this was a serious thread you just hijacked, Jack.

Red08

perhaps gone from new production, but it will never be gone