Gen 5 Racing Tech Heads, cam, valvetrain, short block discussion

2009 Camaro Engine!

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Old 06-04-2007, 09:01 PM
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Originally Posted by screamingjimmy
it is a quite reasonable theory that the LS3 will be our biggest engine choice in the camaro.

we know that gm will never ever put a huge engine in a car deemed for the value market due to competition to the vette.

even if the LS7 was continuing production, we would never see it in the camaro do to high manufacturing costs, which would lead to low profitability. remember, gm's plan is to make a good return financially on the car. A crate LS7 is worth $13,000.00!

The LS3 would be the obvious choice for the large engine due to economies of scale, most parts are already mass produced!




and the 5.3L would also be a smart move for gm as the middle engine option for the sake of economies of scale on a extremly mass produced engine!

The biggest question is not whether or not GM is putting the LS3 in the camaro, we all know that answer!
The question is, will GM give us 5.3L in the camaro as well! I know many people on this forum figure the 5.3L has no right in the camaro, but think of the market opportunity GM will shun if they don't put the 5.3L in the camaro!


I say bring on the 5.3L for me...
... not too big, not too small, just the size of montreal!
Finally, some more people are finally getting it!
Old 06-04-2007, 10:42 PM
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To me, flexibility is key with the new Camaro. In the Third Gens, there was FOUR engine choices- V6 302 TBI 302 MPI and 350. It would be the smart business move to have a v6, the 5.3L and then the LS3 in the car.
Old 06-04-2007, 11:45 PM
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like i said for the z28...the 5.3L because its going up against the mustang GT and the ss...LS3 because its going against the srt cars with the 6.1L hemis
Old 06-05-2007, 12:07 AM
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I wouldn't be surprised to see the 5.3. I have a 5.3 in my Silverado and it no slouch... especially give it is a full size extended cab pick up that weights a lot more than our cars do.
Old 06-05-2007, 12:08 AM
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Originally Posted by RomulusSmallBlock
z28...its going up against the mustang GT and the ss...LS3 because its going against the srt cars with the 6.1L hemis
you sure about that?
Old 06-05-2007, 09:02 AM
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Surely a fuel goal will be to achieve 30 mpg. They will achieve this by shutting down cylinders on the highway. Are there any restrictions our west for any of GM's engines? The car needs to be marketable across the country. Of the current and future LS- engines which is the cleanest?

When someone says it needs to have this engine to compete against that car in that market, I almost lose it. I understand most folks here are interested in performance and bragging rights. Until recent years didn't the 5.7 handle most Mustangs? If GM reads history is performance going to really be that important? They had a car with equal or better looks, it outran the competition but the Mustang outsold the Camaro by big numbers, right? WHY
Old 06-05-2007, 10:05 AM
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Originally Posted by Zanador
To me, flexibility is key with the new Camaro. In the Third Gens, there was FOUR engine choices- V6 302 TBI 302 MPI and 350. It would be the smart business move to have a v6, the 5.3L and then the LS3 in the car.
They were 305's, not 302's.
Old 06-05-2007, 10:37 AM
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Originally Posted by demonspeed
They were 305's, not 302's.
Thank you
Old 06-05-2007, 11:01 AM
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Originally Posted by OctaneZ28
you sure about that?
Z28 for presidente! Viva la revolution!
Old 06-05-2007, 11:15 AM
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Originally Posted by OctaneZ28
you sure about that?
Spill the beans! lol
Old 06-06-2007, 01:33 PM
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i am not afraid of the 5.3L.... so far we have only seen 5.3L's in truck form and the slightly modified impala engine.

We've seen it in some modified trucks, a 5.3L with the LS6 manifold and the LS6 cam with a rev limiter set to corvette standards, that engine goes like a rape snake! Once again i will state, i am not afraid of the 5.3L in the camaro. Someone even said before that it would roast the 4.6L mustang easy, and i believe it would run with the 5.7L hemis!

that would leave our precious LS3 for the competition against the 6.1L hemis, and put up a good race with a 500hp shelby(remember, the shelby is overweight)! that is considering that the zeta is light weight!


on to the next topic, do you think GM will limit the LS3 to under 430hp in the maros.

We saw it on the LS1's, where the vettes were rated at 350hp, and the camaro saw a max of 325hp near the end(usually 305hp)!
when dynoed, the camaro outperformed it's rating where as the vette underpowered it's rating. We saw something similar on the LT1's as well!

When the LS2 came out, there was no special treatement, the vette and the GTO both saw the max of 400hp!

So do you think gm will give special treatment to the vette, or will the camaro be rated at the robust 430hp like the vette?

personnally, i think they will go the way of the LS2 and give it the same ratings. The vette does get an extra 6hp due to their special vaccum operated mufflers that almost go straight pipe when you revv it high!

i thought it was a bad marketing scheme to differentiate the vette with higher ratings... why sell the camaro and firebird at 305hp when you know darn right that with the corvette tune it would put out 350hp easy!
Old 06-07-2007, 09:07 AM
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The last year of the LS1 both the one in the GTO and the one in the Corvette were 350HP.
Old 06-07-2007, 10:28 AM
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Originally Posted by screamingjimmy
it is a quite reasonable theory that the LS3 will be our biggest engine choice in the camaro.

we know that gm will never ever put a huge engine in a car deemed for the value market due to competition to the vette.

even if the LS7 was continuing production, we would never see it in the camaro do to high manufacturing costs, which would lead to low profitability. remember, gm's plan is to make a good return financially on the car. A crate LS7 is worth $13,000.00!

The LS3 would be the obvious choice for the large engine due to economies of scale, most parts are already mass produced!




and the 5.3L would also be a smart move for gm as the middle engine option for the sake of economies of scale on a extremly mass produced engine!

The biggest question is not whether or not GM is putting the LS3 in the camaro, we all know that answer!
The question is, will GM give us 5.3L in the camaro as well! I know many people on this forum figure the 5.3L has no right in the camaro, but think of the market opportunity GM will shun if they don't put the 5.3L in the camaro!


I say bring on the 5.3L for me...
... not too big, not too small, just the size of montreal!
I agree 100%. Camaro needs to be profitable and affordable. Keep the weight down and put in a reasonable moderately fuel efficient 5.3. Give it DoD and let it rev. Winds are changing directions people, I don't think you can justify a monster motor anymore.
Old 06-07-2007, 12:54 PM
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I'd be somewhat disappointed if the top end model camaro was not rated to compete with the GT500. There's no reason to remain under fords thumb anymore. In lieu of a comparable hp rating, I'd go for a factory stripped version without extra weight.
Old 06-07-2007, 02:20 PM
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The LS2 is going bye bye. The replacement will be the L92/L76 type motor. It will be either 6.0 or 6.2L ala the G8 and fullsize trucks. I am guessing there will be a couple different 8s available based on comments from GM. If I were to guess the 3.6L V6 will be the base motor, then the 5.3 then 6.0/6.2 and maybe, just maybe a LS7 or similar.
Old 06-07-2007, 03:10 PM
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LS7 is going bye-bye too.
Being replaced by better things.
Old 06-07-2007, 04:01 PM
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Default better things...

^^^ Kinda a side note, but did anyone see the article about the 300hp V6 that GM has now?? Its going into the CTS for 2008 i believe. the thing has DI and VVT.... I bet that'll be our V6. If so, the 5.3l could have 375ish hp, and the LS3 with 430 or 450... i could see that happening. I'll find the link to the V6.

Last edited by Mystic 98 TA; 06-07-2007 at 04:06 PM.
Old 06-07-2007, 04:44 PM
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Originally Posted by Mystic 98 TA
^^^ Kinda a side note, but did anyone see the article about the 300hp V6 that GM has now?? Its going into the CTS for 2008 i believe. the thing has DI and VVT.... I bet that'll be our V6. If so, the 5.3l could have 375ish hp, and the LS3 with 430 or 450... i could see that happening. I'll find the link to the V6.
I have heard of that six, and I've also heard about it maybe being used in the new Camaro. Remember, Chevrolet has already told us that they intend to use two sixes, one super-economical one and one high-output. I could only guess that that means the 3900 V6 with DOD and either the "normal" 3.6L DOHC or the Cadillac Hi-po version. I'd look for them using the Cadillac version, but without the badass intake manifold their sixes always come with...so probably around 290-ish horsepower.

Also, I think if they were to have to push the 5.3L up to those kind of numbers, they would probably just throw in the L92/76 6.0L instead which is rated at around 360hp, and could pretty easily be bumped up a bit. Not to mention it'd be more than enough to deal with Mustangs, and very likely enough power for most buyers. Let the top dog have an LS3 or whatever.
Old 06-07-2007, 04:56 PM
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Yup, there's 3 versions of the 3.6

The regular one with 255+hp
The DI one with 275+hp
And the DI/VVT one with 300+hp

I'd say all 3 are candiates for appearances in Camaro.
Old 06-07-2007, 06:16 PM
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Originally Posted by OctaneZ28
LS7 is going bye-bye too.
Being replaced by better things.
BETTER THINGS!?
i like the sound of that!

this is just my own opinion, but i highly doubt that the LS3 in the camaro will be rated at 430 hp... i would expect something like 390-405 hp out of an LS3 Camaro.
the LS3 for the Vette is supposed to be 430 hp, and GM has showed in the past that they do not want the Camaro affecting the sales of the Corvette, and we all know that means that they rate the camaro for less power..



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