brianw21

I've been reading an "informed" thread over at DC:

LS7 Demise

Basically they show the LS2 and LS7 on the engine lists for 2006 and 2007. Then for the 2008 model year they are replaced by a LS3 and LS9. Both engine capacities are 6.2L the latter being supercharged.

He mentions:

LS3: 450hp
LS9: 600hp

I hadn't seen this info over here, and wanted some feedback. I would be VERY skeptical, except he has hit the nail on the head on everything "leaked" to date. Including the Six speed Auto. If this is true, it could make the 427 cars very valuable.

Another Yellow

Maybe not if the 6.2L LS9 has 95 more HP than the LS7.

Frank

pdvale

Seems like alot of effort to create an LS7 engine and only have it in production for 2 years.

LS1 engines were out for 8 years, and the LS6 for 4 years.

bernrex

Would be an awesome package ! Right now GM is getting 469 HP out of their S/C 'ed XLR-V engine. And that one is only 4.6 liters I believe.

And look what HP the FGT gets from its small cubed engine.

I would say a minimum of 600 HP .... probably 650 would be had from this package.

glass slipper

LT4 was one year, (I know, it was really a lightly modded LT1) and LT5 was less than 7000 total during a 6 year production run...a number the LS7 will likely surpass the first year. Not disagreeing with you, just throwing out some little tidbits.

ajindfw

With the hp wars in force, it isn't inconceivable.

v.vet's Z06

Could be a "bean counter" move if the LS9 is less expensive to produce then the LS7.

WhiteDiamond

I wouldn't be surprised by such a move. All I remember right now is that the 3-valve heads had not made the power levels asked for by the time the team had to make the production decision. In my opinion, pushing the LSx block to 427ci was an absolute no brainer on GM's part, as they had to have known they could make the power they wanted this way. Switching back to smaller displacement after several more years of development AND making or exceeding the LS7 power level, seems very likely. The question is, does anyone know of a project within GM looking at this? The supercharged LS2 in the Caddy engineering demostration vehicle hints at something, just not sure what.....

Edit: I also believe GM will be moving foward with direct gasoline injection soon, so this probably requires a change in head geometry and the pistons, so it is likely GM would rebadge the engines.

Todd

Tom Steele

Sorry, but that is simply not true. He has hit a lot, but he does that by dropping a lot and some of it turns out to be wrong. If you report every rumor, then you're gonna get some right.

Now to be fair to Conti, he has had some good info and I think he has the best intentions in the world, but I have to step up and say that the statement above is incorrect.

http://www.digitalcorvettes.com/foru...threadid=23117

JoesC5

How do you know this info (your link to DC about the Z06-R) is incorrect? GM hasn't even started delivering 2006 Z06's to the retail customers yet, so how can you say that something is not going to happen in the next 12 months (2006 MY run). GM could very well change the Z06 spec's or offer another version (Z06-R) during the next 12 months. Twelve months from now, if there has only been the standard Z06 (7L-505HP) produced for the 2006 MY, then you can chime in with your 20-20 hindsight and say Conti was wrong in his prediction of two versions of the Z06. I'm not saying he is right or wrong, as I don't have access to any internal GM info, nor can I see into the future, but I doubt if you can either.

n1kon

I guess this means that the C6R is going to stop racing. The new Z06 has the 427 LS7 to cater to ALMS regulations to have a production car more closely related to the race car. I beleive that superchargers are not permitted in the class but I could be wrong.

1991Z07

Don't think so...

The LS7 has been running for years in ALMS...and you couldn't buy one in "production" cars.

The rules (I believe) state that the parts must be available from the manufacturer over the counter. The LS7 block was like that.

The Z06 IS a "production" car & chassis, so they can "transplant" the LS7 into it and still be within the rules.

Tom Steele

Common sense/experience.

I don't mean that to be glib. It is simply true. That isn't going to happen. I can state it the same way I can tell you that it won't be 32 degrees in Miami, Florida tomorrow. You could argue that "I can't say that because I can't tell the future" all day, but I'd still be right.

Please don't get me wrong, I'm not trying to bust Conti's chops here. But when he is being introduced as a source who "has hit the nail on the head on everything 'leaked' to date" I am compelled to point out that isn't true. I gave him his due. He has been very diligent in trying to get accurate info and he works hard to share it, but he also swings for the fence sometimes.

Ultimately, I'm just trying to put a grain of salt back into a fairly wild rumor.


You don't really believe that, do you?


Sorry chief, but 20/20 hindsight is when you call it after it happens. I called it in October of 2004. I was right then based on common sense, logic and the evidence available. I am right now for the same reasons, and even more so as the clock ticks. GM isn't going to drop a 550hp Z06-R paddle shift version mid-year.

Plus, for some reason people get prickly about it when you call them out on their wild predictions. Like the numerous >$75k MSRP for the Z06 that ran rampant on the boards for so long. Bring that up to someone who was DECLARING it to be so last year and they get all irritable about it for some reason.

Nope, if I could then I'd be at the local stop-n-rob getting my lottery tickets. But I can reason. I know, and you know, there won't be a mid-year 550hp Z06R and if you don't know that then hang around a while and watch the rumor mill around here, eventually you'll get a healthier dose of skepticism.

Runge_Kutta

It has been posted that the 2007 CTS-V will be getting an LS-3 for
quite a while now. Other people have mentioned it as a 6.0L VVT
engine. This is the first mention of 6.2L in this context although I
think there were once some photos floating around of GM blocks with
6.2L written on them.

http://www.gminsidenews.com/index.php?page=future_guide

======================================== ===================

Cadillac CTS/CTS-V: An all-new larger CTS is going to arrive in (MY) 2007. It will be underpinned by GM’s new Sigma 2 platform and is said to be all-wheel drive capable. Alongside the CTS, will be a new CTS-V which will likely be powered by an upcoming LS3 V8.

======================================== ===================

There is a post about this from June on another C6 forum (DC); threadid=38449

micro

The new Cadillac XLR-V has a 4.4 liter Supercharged Northstar V-8 with 443 hp at 6,400 rpm and 414 lb-ft. of torque at 3,900 rpm. The STS-V has 469 hp and 439 lb-ft of torque at the same rpms as the new STS-V. The Supercharged Northstar generates more peak power for the STS-V, compared to the XLR-V, due largely to the greater underhood space that allows more induction and exhaust capacity.

scorp508

Since when did the C6-R become a paddle shifted car?

korvetkeith

I'd prefer to see it stay NA. FI is kind of a cop out IMHO. Let the aftermarket and the owners do that. I'd much rather see GDI and twin cam in block with variable timing. Given the increased CR allowed by GDI and the increased cam duration facilitated by VVT, 600hp should be easy with 427 cubes.
This is deffinately a bean counter move.

08msmZ06

There's no substitute for cubic inches...

godspeed06

haha, sure there is - its called the z06... at least as far as the viper fans are concerned...

n1kon

I do think so...the rules changed this season which states that the race car must have a production variant.

If the c6r has a 7.0 engine then the street car must also the rules weren't like this before.