LongTimer

Maybe we should be trying to find out when the 2005 Trailblazer / Envoy / Ranier will be released. Could be that they have a special mid summmer release for some reason???

OR ... could the base vette have the gen iii LS6 as a base engine with the OPTIONAL LS2 at some where around 450HP available a several months after the introduction of the C6 and the LS7 of course exclusive to the Z06. Why? Why not.
1. Only additional emissions testing for this scenario would be the Auto / LS6, since the LS6 6spd drive train would remain unchanged from the C5.
2. May help keep the base price of the C6 lower.
3. Provides a few more months for continued Gen IV development with out delaying the C6 intro. Maybe the new Auto tranny will be available in this optional drive train?
4. Adds an optional higher performance engine to the coupe and vert.
5. Maintains the Z06 all out performance status with the LS7.
6. May soften Jinx's "GM YOU SUCK", to "GM YOU KINDA SUCK".




[Modified by LongTimer, 6:37 PM 10/29/2003]

Jinx

Keep in mind that C6 was delayed a year. GM Powertrain has had plenty of time to work on this engine. GenIV is coming to trucks as well as Corvette. It's pretty clear GenIII will be quickly retired. I bet the Pontiac GTO and CTS-V are one-year cars with the LS6 before they get a detuned LS2. Two years, tops.

Carrying the LS6 forward to C6 takes away from the newness of the car. There's no good reason to do it. Cost savings? GenIV is going into trucks -- it's inconceivable that GM Powertrain won't build a new engine that exceeds the old engine's power and cost targets. Otherwise, why bother?

If there's an optional engine for coupe and convertible, it better not be an excuse for an uncompetitive base engine, and it better not be a trivial power increase. I'm steamed enough that Z06 has been used to excuse stagnant C5 power; this has to stop.

I'd settle for 425hp base, 470hp optional, 500hp Z06. Z06 shouldn't be about exclusive power, it should be about ultimate handling -- that's what the "Z" is for, you know.

.Jinx

LymanSS

This leaves us with a lot of questions. First off, when they say "Standard equipment" are they saying standard equipment in the vette, or standard equipment in any GM car. If they mean in the vette, than I guess that only means it has to be bigger than a 350, because I think the base engines never got bigger than that. If they mean standard equipment in any GM car, then it could mean bigger than a 400. I know a lot of cars had 400's but I don't know if it was ever standard equipment on any of them. If it were larger than a 400, then we're talking 6.6 liters or so. 400 Cubic inches is 6.55 liters. There's a lot of ambiguity in these statements. As for the power, I'd say it should have to top the LS6. That engine is standard equipment on the Z06, which is a model, not an options package. This would go along with the batting average remark, which if I recall correctly pointed to the number 406 IE more than 405. But we all knew it would be over 405 didn't we?

Scott

SuperChevyICM

Interesting timeline showed in the following link.
http://www.csmauto.com/pdf/powertrain_forecast.pdf

Shows the Gen IV engines debuting in Feb of '04.

Runge_Kutta

Thanks! Your company's document suggests that there is a 6.4L, 2V
engine. I wonder what's going on with the 3V engines. Maybe that
6.4L, 2V engine is the one putting out 473hp!!??


[Modified by Runge_Kutta, 8:29 PM 10/29/2003]

vetmts

i don't think the document is completely accurate. it says the 4.8L V-8 engine has 12valves which is imposible

Jody19SebringGS

:iagree: Very well said. I completely agree. :cheers:

Scissors

[Modified by Scissors, 7:07 AM 11/3/2003]

Curtis A. Franz

Double click on Scissor's image above to see the 6.0 LS2, 5.3 DOD, and the 6.4 LS7. This is from GM powertrain's website that was available for a while. It is this list that enables us to discount numerous pagazines saying 5.7 liters and even 6.3 liters from time to time. This list broke out essentially before any of us knew abour the 3v possibilities. There was also an announcement of a McLaren Engineering contract to make cylinder heads for GM that fits in here somewhere.
:chevy





[Modified by Curtis A. Franz, 6:09 PM 11/3/2003]

Zivnuska

That's the most provocative question. Is there something coming from McLaren that does not fit into the engine chart quoted by scissors?

Scissors

I have the original GM pdf file with all of the engine info at home. I'll take a look at it this evening and see if anything catches my attention.

_Nomad_

Yes a 400ci small block.

LongTimer

What if the 6.3 Liter LS7 is NOT the 3 valve Z06 engine? What if it is a 450-475HP, two valve that will be an option on the Coupe & Vert? It's possible that the Z06 engine wasn't listed yet when Scissors captured that GM posting mistake. Maybe Z06 will use the McLearen engine. McLearen may use the 6.3 liter block and build it with the 3 valve heads.(?)

Scissors

Here are some more interesting engines from GM's document:

LTR 14958 P ENG M ENGINE GAS, 12 CYL, 7.5L, SFI, V12, DOHC, VVT, CYLINDER DEACTIVATION, GM 20829 E X E A

LTS 14959 P ENG M ENGINE GAS, 12 CYL, 7.5L, SFI, V12, DOHC, VVT, ALUM, HO, GM 20829 E X E A

LTT 14960 P ENG M ENGINE GAS, 12 CYL, 7.5L, SFI, V12, DOHC, VVT, ALUM, TURBO, GM 20903 E X E A

LSL 14916 P ENG M ENGINE GAS, 8 CYL, 5.3L, MFI, IRON, HO, GM 20911 E X E A

LS1 14932 P ENG M ENGINE GAS, 8 CYL, 5.7L, SFI, ALUM, GM 961001 E X E A

LS2 14933 P ENG M ENGINE GAS, 8 CYL, 6.0L, SFI, ALUM, GM 10315 E X E A

LS4 14935 P ENG M ENGINE GAS, 8 CYL, 5.3L, SFI, ALUM, CYLINDER DEACTIVATIONGM 1031 E X E A

LS6 14937 P ENG M ENGINE GAS, 8 CYL, 5.7L, SFI, ALUM, HO, GM 125 E X E A

LS7 14938 P ENG M ENGINE GAS, 8 CYL, 6.4L, SFI, ALUM, HO, GM 718 E X E A

Notice that there is no in-service date next to the LS6, meaning that this document came out before the LS6 was put into service.

LongTimer

... so lots of changes could have been made to their plans since 2001, right?

Scissors

I'd guess additions, but not modifications.

ELOC

I want to see the turbo v-12 as a very high end vette option :D
anyways, these engines should be tuned very very well since it is taking so long for them to get to the streets.

stingray454

No, it's because they know DOD would drive Corvette owners batty, no matter how well it works. It's like CAGS, but worse. If a Corvette had DOD, the first thing most owners would do is figure out how to disable it. Corvette owners do not want to drive a V-4 under ANY circumstances. :D