Does anyone know why the LS3 in the Camaro has less HP than the LS3 in the Corvette? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Carzzy · 05-28-2011, 12:14 PM

The LS3 in the Camaro is rated at 426 HP vs. 430 in the Vette? I thought they were the same exact engine! Why is it rated 4 more on the Vette?

justa25thTA · 05-28-2011, 12:17 PM

Marketing and exhaust system would be the two best bets.

Smoky10 · 05-28-2011, 12:27 PM

Could be a slightly different tune as well.

Carzzy · 05-28-2011, 12:28 PM

Quote:

Originally Posted by justa25thTA

Marketing and exhaust system would be the two best bets.

I was thinking the exhaust system too. Also, the Vette is rated at 436 HP with the optional dual mode exhaust. That exhaust should have been offered on the Camaro.

ckaram · 05-28-2011, 12:32 PM

Instinct says the Vette needs to be on top...yes it's faster due to 'glass but the big dog may need to be rated higher to remain GM's king of the hill. Maybe an unwritten rule?

slick rick · 05-28-2011, 12:48 PM

Quote:

Originally Posted by Carzzy

The LS3 in the Camaro is rated at 426 HP vs. 430 in the Vette? I thought they were the same exact engine! Why is it rated 4 more on the Vette?

The E-ROD LS3 is also rated at 430

TOMS1SS · 05-28-2011, 12:53 PM

Exhaust.

*Milk 1027* · 05-28-2011, 12:55 PM

exhuast and cam

2010SLVRBULIT · 05-28-2011, 12:57 PM

detuned as mentioned by GM.

TOMS1SS · 05-28-2011, 12:59 PM

Quote:

Originally Posted by ckaram

Instinct says the Vette needs to be on top...yes it's faster due to 'glass but the big dog may need to be rated higher to remain GM's king of the hill. Maybe an unwritten rule?

That's been a well established for GM since 1970. I'm fairly certain the last GM model to have more horsepower available as an option would be the LS6 Chevelle. This is probably why the CTS-V and ZL-1 have the LSA and not the LS9 like the ZR-1 does. Seems like the Corvette always had to be top dog.

TRR · 05-28-2011, 01:04 PM

Quote:

Originally Posted by Milk 1027

exhuast and cam

So a different exhaust and cam equals 4 less HP.

TRR

*Milk 1027* · 05-28-2011, 01:05 PM

Quote:

Originally Posted by TRR

So a different exhaust and cam equals 4 less HP.

TRR

yup

AG454 · 05-28-2011, 01:06 PM

Quote:

Originally Posted by TOMS1SS

That's been a well established for GM since 1970. I'm fairly certain the last GM model to have more horsepower available as an option would be the LS6 Chevelle. This is probably why the CTS-V and ZL-1 have the LSA and not the LS9 like the ZR-1 does. Seems like the Corvette always had to be top dog.

In 1970, the LS6 Chevelle was top dog by default, as GM had production problems with the LS6 in the Corvette. It was to be about 460-470 in the Vette. Yes, the only year the Corvette was not top dog. I miss my LS6 Chevelle.

Jcobra · 05-28-2011, 01:17 PM

If they rated it at 430 all the c6 ls3 owners would be crying about it.

05-28-2011, 12:14 PM	#1
Carzzy Drives: '24 Camaro 2SS Conv. & '21Blazer Join Date: May 2011 Location: Rochester NY Posts: 523 View My Garage	Does anyone know why the LS3 in the Camaro has less HP than the LS3 in the Corvette? The LS3 in the Camaro is rated at 426 HP vs. 430 in the Vette? I thought they were the same exact engine! Why is it rated 4 more on the Vette? __________________ '24 Camaro 2SS 6M Convertible

05-28-2011, 12:17 PM	#2
justa25thTA Drives: 2011 Camaro SS/RS LS3 Join Date: Aug 2010 Location: Texas Posts: 1,630	Marketing and exhaust system would be the two best bets. __________________ Yeah, I'll get around to it...

05-28-2011, 12:32 PM	#5
ckaram Drives: 2011 2SS RS, 1968 ragtop Join Date: Apr 2009 Location: Indiana Posts: 1,850	Instinct says the Vette needs to be on top...yes it's faster due to 'glass but the big dog may need to be rated higher to remain GM's king of the hill. Maybe an unwritten rule? __________________ 1968 Camaro Convertible LS1, T56

05-28-2011, 12:53 PM	#7
TOMS1SS Drives: NA Join Date: Aug 2010 Location: NA Posts: 12,126 View My Garage	Exhaust. __________________ El funcionario señor de los desiertos de Mojave y Sonora.

05-28-2011, 12:55 PM	#8
Milk 1027 Camaro➎ moderator Drives: '13 BLK 1LE Join Date: Aug 2008 Location: AZ Posts: 13,567 View My Garage	exhuast and cam __________________

05-28-2011, 12:27 PM	#3
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 745	Could be a slightly different tune as well.

05-28-2011, 12:57 PM	#9
2010SLVRBULIT Drives: G5(LLT) & C6(LS3) Join Date: Apr 2009 Location: MARS Posts: 7,525 View My Garage	detuned as mentioned by GM.

05-28-2011, 01:17 PM	#14
Jcobra Drives: 2010 2ss/rs M6 Join Date: Nov 2010 Location: Il Posts: 931	If they rated it at 430 all the c6 ls3 owners would be crying about it.

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