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Old 11-27-2007, 07:12 PM   #1
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So the LS9 does exist...but wait!

While I was doing some light end-of-semester homework...it occured to me:

*cloudy dream like state*

"The recent introduction of the ’08 Corvette’s 430-hp LS3 V-8, along with the release later this year of the ’08 Chevrolet Tahoe Hybrid’s 6.0L V-8,
represent the last editions of the Gen IV engine family, Stephens says."

*clouds evaporate*

I mean, to be fair...we really don't know that much about the LS9. So I suppose it could be a next-gen engine.
Both of the above engines have been released, now. So this whole situation begs the question: IS the LS9 a Generation V engine? (Meaning DI) Or was this Tom Stephens guy just 'talking'...



Thoughts?
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Old 11-27-2007, 08:50 PM   #2
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so you propose the ls9 is a hybrid motor, to be used for the camaro????
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Old 11-27-2007, 09:37 PM   #3
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Ya know Dragon, you make a good (albeit cloudy) point. I have been STARING at the LS9 (the link that YOU posted, thank you very much) for a while now and man, it's just a piece of art! In the top view of the intercooler, I can make out what appears to be the plenum "runners" that feed the heads, and with all the fittings and sensors shown in the pics, I would expect to see some injectors in or around those runners IF it were Port Injected. DI is a whole different story.
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Old 11-27-2007, 10:19 PM   #4
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The LS9 as I understand it is an LS3+supercharger+intercooler, and a couple other little things. But basically its an LS3. I don't see it contradicting the statement about the end of the gen IV small blocks.
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Old 11-28-2007, 04:04 PM   #5
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ill take it if they make it!!
thats my new moto!
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Old 11-29-2007, 01:55 PM   #6
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just cus they are the last of the gen IV engines doesnt mean they cant be expounded upon. ie: LS9 = S/C LS3...lol
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Old 11-29-2007, 02:07 PM   #7
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Good points. That whole idea of it really just being an LS3 completely slipped my mind...
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Old 11-29-2007, 06:38 PM   #8
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Quote:
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Good points. That whole idea of it really just being an LS3 completely slipped my mind...
kinda the whole

LS1->LS6
LS2->LS7
LS3->LS9...or would it be LS8?


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Old 11-30-2007, 08:22 AM   #9
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Actually its LS3->LS8->LS9

The LS8 is a detuned LS9. I have seen articles both saying it is also intercooled and it isn't so I don't know but it is supposed to be in the 550 HP area. I don't think an LS9 will ever be in a Camaro but I could see an LS8 in one as some kind of special edition, 100th anniversary of Chevy (2011), etc.
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Old 11-30-2007, 08:40 AM   #10
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I'm just curious...how do you know that the LS8 isn't intercooled. Not being agressive or anything - just, like I said, curious.
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Old 11-30-2007, 11:48 AM   #11
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so an ls8 is a detuned version of the ls9??
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Old 11-30-2007, 12:40 PM   #12
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Well like I said I have seen it listed both ways for the intercooler so I don't know who is right. I would think at that power level it would have to be intercooled. The LS8 and LS9 are basically both supercharged 6.2s with different power levels. I just get the feeling that the LS9 is going to be a ZR1 only engine like the LS7 was a Z06 only engine. The LS8 is the one I would expect to see in other models.
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Old 11-30-2007, 12:43 PM   #13
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Quote:
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so an ls8 is a detuned version of the ls9??
or visa versa...This is how I see it:
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Old 11-30-2007, 02:12 PM   #14
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or visa versa...This is how I see it:
Not understanding that pic. Are you saying you think the LS8 will be lower in power than the LS3?

Oh I get it, you are saying that both are derived from the LS3. I would agree with that, they are both basically SC LS3s. Whether they created the LS9 first and made a lower powered LS8 for other models or the LS8 came first (after the LS3) I have no idea.
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Old 11-30-2007, 06:01 PM   #15
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no i think its saying that the l68 is from the ls3 but equal to the ls9. so both motors come from the ls3. so what vehicle is the ls8 in now. the ls9 is the new zr1 motor,so where does the s8 fall in place and what kind of power are we looking at???
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Old 11-30-2007, 07:47 PM   #16
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We don't know, yet. The mag that told us of GM's supercharged engine lineup predicted the LS9 would be put into the ZR-1...and so it has been.

It also predicted that the LS8 would be for the Top-of-the-line Zeta platform cars in a ~450 hp tune. Then a higher 500-550hp tuned version would poke it's way into the Z06 (if I remember correctly). We have yet to see if any of that's true.

btw...all the pic was supposed to imply was that both the LS8 and the LS9 were derivitaves of the LS3...not that they were equal
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Old 11-30-2007, 08:03 PM   #17
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so basically same motor but one application is for top vette and the other is for the top camaro(or so we think)???
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Old 11-30-2007, 08:06 PM   #18
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so we think (and hope....)
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Old 11-30-2007, 08:11 PM   #19
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hmmm. so the "ls8 will get about 450+hp and the ls9 gets 550+? and the ls3 gets about 430 now, what is the point of having a s/c ls8 for 20-40 more hp??
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Old 11-30-2007, 08:26 PM   #20
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Don't ask me...here's my reference: http://www.camaro5.com/forums/showthread.php?t=1913

my numbers were off a little, not ~450...but 475-500. and then the Z06 would have an uptuned version, (I'd guess) pushing 550.
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Old 11-30-2007, 08:29 PM   #21
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i thought the ls9 is like 605 hp? if 605 is right i would expect about 550 for the s/c ls8 and 430-450 for the ls3. that makes more sense to me, but im not makinf the calls there.
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Old 11-30-2007, 08:35 PM   #22
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650 from the LS9.

475-500 from the Zeta-tuned LS8
(guessing) 525-550 from a Z06-tuned LS8
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Old 11-30-2007, 09:19 PM   #23
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wait , im getting confused. so the vette gets 2 supercharged motors??? the ls8 and 9 ??
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Old 11-30-2007, 11:19 PM   #24
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According to that article. We know they've got the LS9 so far. that's one. And then the article claims that the Z06 will get one, too.
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Old 11-30-2007, 11:25 PM   #25
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so there is going to be a base 6.2 v8 (vette) 6.2 ls8 s/c z06 and a 6.2 ls9 s/c zr1 ???and 2 of those could be the motor options for the camaro???
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