billiam01

60th anniversay 427 Vert - I want it!

I would think the C7 is going to get a unique small block V8 making the LS7 a dinosaur (revered but still a dinosaur). I llike the 427 Dino - a proven motor. I don't want to help GM refine the C7 V8.

tim414

tim414

While i know it's only rumor, I have read that the first model years C7's may have LS3/LS7/LS9 powerplants. The new rules do not take effect (as far as emissions/mileage standards) for a few years after C7 comes about.

The present generation small blocks are NOT dino's. All small blocks built before C6 WERE based on the original designed small block from 1955/56. But the present day small blocks only share their compact size. That's about it. Nothing else is the same. This info in print and on web.


Add: I was wrong about the small block, as it WAS C5 where the small block change came about...NOT C6

haljensen

GM seems to be led by the Advertizing Dept. and the Advertizing dept. is overboard into nostalgia.

A "Small Block" generation that shares nothing but bore center measurements in the block of the original?

A "Grand Sport" that's just a heavier, slower widebody (even if you buy a manual coupe and get a dry sump also)?

A "427" that's actually a 428?

A "Space Frame" that's really a perimeter frame?

A "Scoop" on the Z06 that isn't open to the air?

A "Radiator Support /Skid Bar" that's just a radiator support?

I like the products, hate the BS advertizing.

mirage2991

the scoop is opened into the air on gs and z cars...

and its prior the c5 that the corvette were based on old sbc design

ZL-1

The steel-frame 427 Convertible is 3355 lbs, about 225 lbs heavier than an early C6Z, a bit less difference for a later C6Z. To estimate the performance difference just make a run in your C6Z with one of your bigger friends in your passenger seat.


.

tim414

I stand corrected. Yes, I went back and read again and it WAS C5 where the small block engine change came about. Thanks.

haljensen

The "Scoop" is blocked by a chunk of black plastic with a couple of tiny holes formed into it. It is NOT a functional CAI by any stretch of the imagination.

The last Corvette that had an original "Small Block" design engine was the '96, 15 years ago. All Corvette engines since then have been the LS series. The current 428 isn't a "Big Block" like the original 427, it shares the same bore centers as the LS1, a 346 cu. in. engine from 1997.

Turbooo2u

These won't be very affordable unless there IS NOT a limited run.

'06 Quicksilver Z06

Someone else mentioned this before about "428" cu ins..

I did the math on it and came up with the following:

The LS7's specifications are significant for a production engine:

505 horsepower @ 6200 rpm
475 lb.-ft. of torque @ 4800 rpm
7000-rpm redline
Unique engine block with larger 104.8-mm (4.125-inch) bores and pressed-in cylinder liners
Forged steel crankshaft with 101.6-mm (4-inch) stroke
Titanium connecting rods
Cast aluminum flat-top pistons
Racing-derived CNC-ported aluminum cylinder heads with titanium intake valves and sodium-filled exhaust valves
Dry-sump oiling system
11.0:1 compression ratio
Camshaft with 15-mm (.591-inch) lift
Hydroformed exhaust headers with unique "quad flow" collector flanges.

CI= Bore x Bore x Stroke x 4 x .7854 x 8

4.125 x 4.125 x 4 x 0.7854 x 8 = cubic Inches 427.6503 in

OR

Liters X 61.0237

7 x 61.0237 = 427.1659 cubic inches

widgetsupply

Not to mention if you invest the money in a real investment, you will likely have more than $200k in 25 years.

widgetsupply

I don't get all of the haters. I personally think this is a brilliant move for GM. People have been saying they are waiting for the C7 for several years now. How do you move cars the year before the new model comes out? I think this will do it, or at least help them move a lot more cars than they would have without making changes.

Does it really matter if they come out with a faster car than yours, and I am not saying this car will be faster than a Z06? They are all stupid fast cars. If you have to have the fastest thing out there, the solution is obvious. Mod away.

The big news to me is that GM is saying hey we can make a high performance vert. Perhaps the C7 Z series will be offered in convertilble models as well. Why not? Most of the other companies do it. I think the 911 Turbo has generally been offered this way. Why not the Corvette?

If you want something to complain about, read up on the 200mph GT500 Mustang that is being released.

89vette

White with stripes, blue interior and a blue top? Not my taste at all.

BearZ06

[QUOTE=haljensen;1579720227]GM seems to be led by the Advertizing Dept. and the Advertizing dept. is overboard into nostalgia.

A "Scoop" on the Z06 that isn't open to the air?

http://forums.corvetteforum.com/c6-z...naca-duct.html

ZL-1

The 427 Convertible is a great way to send off the C6. A smart marketing decision using off-the shelf parts. It should satisfy those who have been begging for a Z06 vert for 6 years even though it lacks the aluminum frame (GM can maintain their claim that the aluminum frame is not acceptable for an open car). People sometimes forget that the main focus of a Z06 is light weight. A steel-framed convertible shouldn't be called a Z06, but it will be plenty fast. And by using the carbon fiber parts in front the weight distribution reaches 50/50. Should be a great-driving car.

The 427 Convertible will be a great alternative for all the C6 owners who won't like the C7 at first (this happens with every new Corvette generation - many Corvette owners are kinda of like Harley owners, they don't initially accept changes to their favorite icon). This will be the perfect solution, they can move up to the last and best C6).

The C7 will come as a base car at first. There will be no need for a Z06 (lightweight) C7, the base car will already incorporate many weight savings. When the performance version of the C7 arrives it will have forced induction, not 7 liters. It will be a ZR1, not a Z06.

So for some Corvette fans the 427 Convertible will be a high point for many years to come.

JoesC5

Try and put 428 cubic inches of water into a bucket that has 427.6503 cubic inches of capacity without spilling any. The volume of the LS7 is not 428 cubic inches.

If air will pass through an opening then that opening is functional.

A perimeter frame does not encapsulate the cockpit, a space frame does, as does the frame in the C5/C6.

edlipman

Hey:
When you look at a V8 short block there are some pistons at TDC , some at BDC and some in the middle. When you turn the crankshaft some pistons move up and some go down. The displacement number is figured with ALL the pistons at BDC , Bottom Dead Center ! Therefore the actual air displacement of an engine is half of the actual displacement number.
Surprise !
Ed

sky1

I like the 427 vert,and kudo's to GM for making the C6 look great every year.IMO (witch I know is like a butt) I think the LS7 will be looked on as a great motor that made alot of other manufactures anti-up so to speak.Again I am with some other posters on that I think 2013 will be the last year for the LS7,so buyers on the fence might want to think about it.I am just glad I got mine.

mirage2991

yup, the scoop works, period, got hpt log that shows just that...

haljensen

If you honestly believe that a 90mm throttle body can get enough air thru a limited number of 1/4 inch or smaller holes I have some ocean front property in Austin, TX I'd like to sell to you.