LS3 Envy?
I have a base LS3 with the only mod being a catback. It ran a 12.3 at 118.40 mph at Firebird, a track that is in your neighborhood. That's why I "chimed in". I'm a semi regular there, and the stock LS2 cars aren't running with mine. I'm quite comfortable in saying that your car stands little chance against mine, assuming you are stock or even slightly modified (if your mods are beyond that, who knows). We can meet at the track and prove it once the weather gets reasonable. Loser buys beer.

It doesn't matter to me if your MODIFIED LS3 Base can beat my STOCK
LS2, Z51 or any other LS2. Onve you've modified the car, as far as I'm concerned, all bets are off.
To circle back once agaion to the POINT of this post - I responded to the initial poster and provided the reason why I personally do not feel any "LS3 Envy", as they put it.
The reason being that GM has proven beyond a doubt with repeated track runs, that the STOCK LS2, Z51, Manual is faster than the STOCK LS3 Base. For that reason, and that reason alone, I am quite comfortable just knowing my car is faster than a STOCK LS3 Base. I am also quite comfortable with the fact my car is only .1 seconds slower than an LS3 Z51.
There is absolutely nothing you or anyone else is going to say that is going to change my feeling. I'm not sure why you feel the need to keep pushing on this.
It doesn't matter to me if your MODIFIED LS3 Base can beat my STOCK
LS2, Z51 or any other LS2. Onve you've modified the car, as far as I'm concerned, all bets are off.
To circle back once agaion to the POINT of this post - I responded to the initial poster and provided the reason why I personally do not feel any "LS3 Envy", as they put it.
The reason being that GM has proven beyond a doubt with repeated track runs, that the STOCK LS2, Z51, Manual is faster than the STOCK LS3 Base. For that reason, and that reason alone, I am quite comfortable just knowing my car is faster than a STOCK LS3 Base. I am also quite comfortable with the fact my car is only .1 seconds slower than an LS3 Z51.
There is absolutely nothing you or anyone else is going to say that is going to change my feeling. I'm not sure why you feel the need to keep pushing on this.
Nefertiti and Cleopatra lying stark naked on the banks couldn't talk you into coming out. DeNial feels good. Its "soothing".
But plenty in here know if you don't, that you're all wet. Careful you don't drown. A lot of people have drowned in Denial river.
Last edited by '06 Quicksilver Z06; Jul 14, 2009 at 03:01 AM.
Oh.... and I got no problem telling you that your claim that "technology has passed all LS2 owners by" amounts to little more than a crock of SHI% Please
Nefertiti and Cleopatra lying stark naked on the banks couldn't talk you into coming out. DeNial feels good. Its "soothing".
But plenty in here know if you don't, that you're all wet.
What else ya' got???
Also...
..Now, in this fantasy world of yours where "LS2 owners can't get rid of their cars" (as you so eloquently put it) are all the LS3 owners who also have their cars on the market, getting full asking price, or more than asking price?
Last edited by RedC7AZ; Jul 14, 2009 at 03:16 AM.
If you ain't talking "facts" then whats the point in you talking at all?
Fact: LS3 430-436 SAE Certified Horsepower
Fact: LS7 505 SAE Certified Horsepower
Fact: LS9 638 SAE Certified Horsepower
What was the "theory" again as to how much the SAE Certified Horsepower rating for the LS2 engine was???
I decided against living in denial. Its too bad that you haven't. But I sort of feel partly responsible for you embracing that horsecrap as I played a role in advancing it.
When that theory first came out, Marina Blue and myself were the ones really pushing it. I thought, perhaps even more strongly than you, that there was validity to it.
But the FACTS quickly changed all of that.
After about 3 days or so of seeing what the LS3 could do, and what it was about, my words then were: "I've seen enough". I knew then that any talk of the stock LS2 holding a candle to it was wishful thinking.
Indeed, it actually accelerated my decision to go ahead and get rid of my own LS2 based C6, which I was trying just as hard as you are now, to fool myself and others, into believing that "technology and progress had not bypassed it, and went ahead and got what I wanted in the first place. The Z06.
So when you talk about this "theory", I know it all too well. I was instrumental perpetrating it. And I know it for what it is.
You want to fantasize that your LS2 makes 410 bhp (or more) stock be my guest.

Been there done that. That theory is just as unfounded now as it was when it was first postulated.
Nobody can force you to face the facts. But if you want to continue wandering around in darkness and ignorance, and spouting off unfounded
Last edited by '06 Quicksilver Z06; Jul 14, 2009 at 03:48 AM.
(This is probably whey we see a mininal jump in performance when we compare an apples to apples configuration of an LS2 and LS3)
The general conclusion from the theory was that GM did not document the LS2 at 410 HP, so that they would not upset all the 2003-2004
Z06 owners with 405 HP, who thought when they bought their car they'd have the most powerful Corvette for more than a year or so.
Last edited by '06 Quicksilver Z06; Jul 14, 2009 at 03:35 AM.

Officially, per GM, per SAE ratings, the AMERICAN based LS2 engine makes:
400 hp (298 kW) at 6000 rpm
400 ft·lbs (542 N·m) at 4400 rpm
Now, the reason WHY the rumor started, was because the LS2's in the E-series HSVs are modified in Australia to produce 412 hp (307 kW) and 412 ft·lbs (559 N·m)
So, through misinformation, through rumors, people started to spin and the 410HP LS2 in Corvettes emerged.
So, the USA based Corvette's that got the LS2 engines made 400HP. The Australian LS2's got 412HP.
Now, can we lay this to rest, once and for all????
Last edited by LBear; Jul 14, 2009 at 03:44 AM.
The Best of Corvette for Corvette Enthusiasts

Officially, per GM, per SAE ratings, the AMERICAN based LS2 engine makes:
400 hp (298 kW) at 6000 rpm
400 ft·lbs (542 N·m) at 4400 rpm
Now, the reason WHY the rumor started, was because the LS2's in the E-series HSVs are modified in Australia to produce 412 hp (307 kW) and 412 ft·lbs (559 N·m)
So, through misinformation, through rumors, people started to spin and the 410HP LS2 in Corvettes emerged.
So, the USA based Corvette's that got the LS2 engines made 400HP. The Australian LS2's got 412HP.
Now, can we lay this to rest, once and for all????

But no, I doubt its ever put to rest as long as people want to believe that their cars are "underrated" and "just as good as" the latest version to come out.
Denial. It ain't just a river in Africa.
*The LS3 block is an updated version of the LS2 casting featuring a larger bore of 4.06 in (103 mm) creating a displacement of 6.2 L
*It features higher flowing cylinder heads sourced from the L92
*A more aggressive camshaft with 0.551" lift
*A revised valvetrain with 6 mm (0.24 in) offset intake rocker arms
*A high-flow intake manifold
* 47 lb/hr fuel injectors from the LS7 engine.
* The L76/L92/LS3 cylinder heads use 2.165 in (55.0 mm) intake valves, and 1.59 in (40 mm) exhaust valves.
On a side note, from April 2008, Australian performance car manufacturer, HSV, adopted the LS3 as its standard V8 throughout the range, replacing the LS2. It dropped the LS2, and went with the LS3. They actually de-tuned the LS3 to 425 hp. Power and torque was restricted to protect the drivetrain currently used in the E-Series sedans.
Someone heard or read that the LS2 in Australia made 412HP. The reason why it made 412HP was because they MODIFIED IT, but it was for AUSTRALIAN USE only in the E-series HSV's.
So the facts got twisted and then the rumor circulated that the LS2 makes 410HP+ here in the states and in the Corvette. Which it does NOT. The LS2 in the Corvette makes 400HP from the factory.
Recently, I traded the Car in on a new 09 Z06, In my humble opinion it is the perfect car, it is more comfortable, shifts better, handles better. I thought I would miss the targa top, however I haven't given it a second thought. Quite frankly I do not think that a person can mod a C6 into a better car than the Z06, you might make a faster car, however you give up refinement and reliability.
Also, like what has been mentioned above, I think the ZR1 is a bit gimmicky, I realize I may be committing corvette blasphemy but the hood looks ricey, (Although I have never seen it in person)
Last edited by Licit; Jul 14, 2009 at 06:23 AM.
Personally, I don't care what road and track or Car and driver people say, They don't live in the real world, most of these people by their own admission own mini vans, the spend a few hours with a car and get to send it back. Or they get it pick from a fleet of long term test vehicles when the need something. Their either drive worn out test mules and media cars, or have to baby reader owned cars. It's like being a photographer for playboy, you see so many hot naked women all day, that you lose your ability to appreciate the real cute chick next door.
This really should have been made into a sticky because of all these “LS3 Envy” type threads. I thought of asking the mods to do that, but decided against it because of your health and welfare. Just imagine if you would have come to Corvette General every day seeing that thread as a sticky. It probably would have driven you to drink. You would have had to change your forum name from need-for-speed to need-a-drink. If you decide to have a few after the thread, I might even offer to come to Texas and throw down a couple with you. H—l, I might even bring a bottle of 143 proof George T. Stagg and then wait to drive you home.
Hope you learn something and then retain the knowledge. I’m not asking you to believe anything, just read the thread.
Thats the problem here. We're dealing mainly in facts. You mainly in theory and "wishful thinking" and "pipe dreaming".
If you ain't talking "facts" then whats the point in you talking at all?
Fact: LS3 430-436 SAE Certified Horsepower
Fact: LS7 505 SAE Certified Horsepower
Fact: LS9 638 SAE Certified Horsepower
What was the "theory" again as to how much the SAE Certified Horsepower rating for the LS2 engine was???
I have read the "documentation" and espoused the theory once myself, perhaps even well before you did.....even helped perpetrate it when the theory first came out....Schindler and NeedforSpeed both can tell you, as can MarinaBlue.....and then I woke up and came to the realization that it was bull$#**. And "publicly" stated as such. The facts have a way of doing that to those of us who don't wish to endlessly embrace fantasy.
I decided against living in denial. Its too bad that you haven't. But I sort of feel partly responsible for you embracing that horsecrap as I played a role in advancing it.
When that theory first came out, Marina Blue and myself were the ones really pushing it. I thought, perhaps even more strongly than you, that there was validity to it.
But the FACTS quickly changed all of that.
After about 3 days or so of seeing what the LS3 could do, and what it was about, my words then were: "I've seen enough". I knew then that any talk of the stock LS2 holding a candle to it was wishful thinking.
Indeed, it actually accelerated my decision to go ahead and get rid of my own LS2 based C6, which I was trying just as hard as you are now, to fool myself and others, into believing that "technology and progress had not bypassed it, and went ahead and got what I wanted in the first place. The Z06.
So when you talk about this "theory", I know it all too well. I was instrumental perpetrating it. And I know it for what it is.
You want to fantasize that your LS2 makes 410 bhp (or more) stock be my guest.

Been there done that. That theory is just as unfounded now as it was when it was first postulated.
Nobody can force you to face the facts. But if you want to continue wandering around in darkness and ignorance, and spouting off unfounded
What I presented in that "LS2 Certified Horsepower--For LS2 Guys thread are the real LS2 power numbers that came from two reliable sources within GM and another source outside GM with very good connections. My three sources are impeccable. One held a key position in Corvette production, another came from the top levels of GM Corvette engineering, and the third has accomplishments and credentials that place him among the highest echelon in the Corvette community. I have already revealed the name of the first source but will not reveal the identity of the other two. All of my sources stated the facts and all their numbers are in agreement. I included performance experiences from forum members, presented information from other sources, and did a logical analysis of GM’s own performance numbers as supporting evidence of LS2’s true power rating in that thread. I found it necessary to rewrite the "LS2 Power in Australia " section recently as better information was discovered. That info solidified the evidence even more.
That thread was NOT an attempt to prove some hypothesis or theory of mine. Those LS2 horsepower numbers came from the engine dynamometers that GM uses to rate their engines and were initially presented as a range. I chose one number that I thought Chevrolet would most likely have rated LS2 at. Since Chevy never did assign a correct rating to LS2, I might be one horsepower different from what Chevy may have used, but I don’t think that is likely. As I previously stated, LS2’s 400-hp was not a true rating but a marketing decision to protect the top dog status of the Z06.
It doesn't really matter to me what anyone believes, because I know who my sources are and all three are very credible. Comments and arguments can be made--and in your case, quite convincing--but I know the truth. I am aware you and some others will never believe what I have presented or the validity of my sources and that is OK...but I know different.
All I tried to do in that original thread was let people know the truth as told to me by three excellent sources--two from within GM and the other, if you knew his credentials, you would not question. I then presented evidence to back up the power numbers I was given. That evidence was easy to gather once I knew LS2's true ratings.
Argue all you want, but it makes no difference to me. I know the correct figures.
It doesn't matter to me if your MODIFIED LS3 Base can beat my STOCK
LS2, Z51 or any other LS2. Onve you've modified the car, as far as I'm concerned, all bets are off.
To circle back once agaion to the POINT of this post - I responded to the initial poster and provided the reason why I personally do not feel any "LS3 Envy", as they put it.
The reason being that GM has proven beyond a doubt with repeated track runs, that the STOCK LS2, Z51, Manual is faster than the STOCK LS3 Base. For that reason, and that reason alone, I am quite comfortable just knowing my car is faster than a STOCK LS3 Base. I am also quite comfortable with the fact my car is only .1 seconds slower than an LS3 Z51.
There is absolutely nothing you or anyone else is going to say that is going to change my feeling. I'm not sure why you feel the need to keep pushing on this.
Where are you getting information to the contrary? Link please.
Also, I don't think my catback would be the reason for winning at the drag strip against your LS2 car. Even before the catback it was running better than the LS2's at firebird. I can't document the improvement with the catback as the weather conditions were not the same.

Officially, per GM, per SAE ratings, the AMERICAN based LS2 engine makes:
400 hp (298 kW) at 6000 rpm
400 ft·lbs (542 N·m) at 4400 rpm
Now, the reason WHY the rumor started, was because the LS2's in the E-series HSVs are modified in Australia to produce 412 hp (307 kW) and 412 ft·lbs (559 N·m)
So, through misinformation, through rumors, people started to spin and the 410HP LS2 in Corvettes emerged.
So, the USA based Corvette's that got the LS2 engines made 400HP. The Australian LS2's got 412HP.
Now, can we lay this to rest, once and for all????
*The LS3 block is an updated version of the LS2 casting featuring a larger bore of 4.06 in (103 mm) creating a displacement of 6.2 L
*It features higher flowing cylinder heads sourced from the L92
*A more aggressive camshaft with 0.551" lift
*A revised valvetrain with 6 mm (0.24 in) offset intake rocker arms
*A high-flow intake manifold
* 47 lb/hr fuel injectors from the LS7 engine.
* The L76/L92/LS3 cylinder heads use 2.165 in (55.0 mm) intake valves, and 1.59 in (40 mm) exhaust valves.
On a side note, from April 2008, Australian performance car manufacturer, HSV, adopted the LS3 as its standard V8 throughout the range, replacing the LS2. It dropped the LS2, and went with the LS3. They actually de-tuned the LS3 to 425 hp. Power and torque was restricted to protect the drivetrain currently used in the E-Series sedans.
Someone heard or read that the LS2 in Australia made 412HP. The reason why it made 412HP was because they MODIFIED IT, but it was for AUSTRALIAN USE only in the E-series HSV's.
So the facts got twisted and then the rumor circulated that the LS2 makes 410HP+ here in the states and in the Corvette. Which it does NOT. The LS2 in the Corvette makes 400HP from the factory.
Also if I recall correctly, the LS2 is rated at somewhere around 412 DIN.















