V6: 304 vs. 312 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BlkThndr66 · 05-03-2011, 11:32 AM

I was under the impression that the 2010 V6 was 304hp and the 2011 was 312hp. Then I see some people in their signatures and under their avatar "2010 v6 312hp".

I found the GM press release here

Horsepower increase for V6 engine

The 2011 Camaro V-6 engine completed SAE certification testing and is now officially rated at 312 horsepower at 6500 rpm and 278 lb-ft of torque at 5100 rpm. This rating is eight horsepower higher than the previous year and also marks an increase in torque from the 2010 rating of 273 lb-ft.

“The 304 horsepower in the 2010 Camaro was actually a conservative rating on our end,” said Tom Sutter, GM V-6 chief engineer. “But we knew already that this award-winning engine produced at least the amount of power we stated, but now we’ve gone the extra step in certifying the engine for this application and have verified an additional 8 horsepower.”

So was there literally no changes or alterations in the engine? So doesn't this mean that all 5th Generation Camaro V6ers have 312HP?

E.T. · 05-03-2011, 11:38 AM

Quote:

Originally Posted by BlkThndr66

So doesn't this mean that all 5th Generation Camaro V6ers have 312HP?

Yep, until the mods begin

HondaPowered · 05-03-2011, 11:40 AM

Yes, they guesstimated the 304. And then in 2011 they decided to get it certified, so it got tested and it was decided to have 312 hp

BlkThndr66 · 05-03-2011, 11:48 AM

Quote:

Originally Posted by E.T.

Yep, until the mods begin

RIGHT?! Roto-Fab on the way, Flows coming for the rear. If I get 320 Ill be happy, F it, it's a daily driver; but I loove me some POWWAA!

Quote:

Originally Posted by HondaPowered

Yes, they guesstimated the 304. And then in 2011 they decided to get it certified, so it got tested and it was decided to have 312 hp

Sweet. Alright, so I'm not crazy. I just didn't know that it had not been certified for the 2010 model. Balls to the walls then.

IROCanSS · 05-03-2011, 11:53 AM

Quote:

Originally Posted by HondaPowered

Yes, they guesstimated the 304. And then in 2011 they decided to get it certified, so it got tested and it was decided to have 312 hp

They didn't "guesstimate". Multi-billion dollar compainies don't "guesstimate" specs. They took the output of the CTS which is the same engine so they assumed the same. I guess they made a tweak or two before dropping it in the Camaro so once they got around to certifying it... it was 312...

Quote:

Originally Posted by BlkThndr66

RIGHT?! Sweet. Alright, so I'm not crazy. I just didn't know that it had not been certified for the 2010 model. Balls to the walls then.

You're only crazy for thinking that extra 8 HP is going to make a difference!

BlkThndr66 · 05-03-2011, 12:10 PM

Quote:

Originally Posted by jrhaus76

They didn't "guesstimate". Multi-billion dollar compainies don't "guesstimate" specs. They took the output of the CTS which is the same engine so they assumed the same. I guess they made a tweak or two before dropping it in the Camaro so once they got around to certifying it... it was 312...

You're only crazy for thinking that extra 8 HP is going to make a difference!

Hahahaha. This was originally because I was going to get a plaque made up for the hood/dash and wanted concrete facts.

Don't worry; there plenty of HP in this humble abode.

Oh, and the % is higher when the rating is lower; so it makes a bigger difference in a lower hp car. Kinda just insulted myself; but I'm totally okay with that.

HondaPowered · 05-03-2011, 12:29 PM

Quote:

Originally Posted by jrhaus76

They didn't "guesstimate". Multi-billion dollar compainies don't "guesstimate" specs. They took the output of the CTS which is the same engine so they assumed the same. I guess they made a tweak or two before dropping it in the Camaro so once they got around to certifying it... it was 312...

You're only crazy for thinking that extra 8 HP is going to make a difference!

So what do you call it when you, instead of getting it certified, you drop an engine in and use specs from when it was in a different car?

Hmm....

scrming · 05-03-2011, 12:32 PM

Quote:

Originally Posted by HondaPowered

So what do you call it when you, instead of getting it certified, you drop an engine in and use specs from when it was in a different car?

Hmm....

I'm sure they did a lot of dynoing, so they knew what the actual HP was... at the time GM was in Bankruptcy so they opted not to do the actual SAE certification which cost a LOT of money... so basically they knew the HP, but simply didn't want to spend a ton of money for the SAE paperwork...

HondaPowered · 05-03-2011, 12:45 PM

I agree with you scrming

The guy earlier made sure to comment on my "guesstimate" comment by saying that "They took the output of the CTS which is the same engine so they assumed the same."

E.T. · 05-03-2011, 01:19 PM

Also, not sure why, but on the official specs/dyno graph released by GM, the V6 shows 313 HP.

LoneStar · 05-03-2011, 01:35 PM

Here you go:

http://www.camarohomepage.com/news_photos/2011v6.htm

rtcat600man · 05-03-2011, 04:48 PM

Stock was 312 HP.

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Modified is now 330 HP.

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Beauwulf · 05-03-2011, 06:54 PM

Quote:

Originally Posted by rtcat600man

Stock was 312 HP.

Attachment 236819

Modified is now 330 HP.

Attachment 236820

I like the font on your decal RT! Where'd you get it?

LoneStar · 05-03-2011, 07:50 PM

Quote:

Originally Posted by rtcat600man

Stock was 312 HP.

Attachment 236819

Modified is now 330 HP.

Attachment 236820

I didn't know intake and exhaust alone would get you to 330hp! Nice!

05-03-2011, 11:32 AM	#1
BlkThndr66 I'm not car-ist Drives: '10 RY 2LT Camaro '96 Mustang Cobra Join Date: Dec 2010 Location: Chicagoland Posts: 228 View My Garage	V6: 304 vs. 312 I was under the impression that the 2010 V6 was 304hp and the 2011 was 312hp. Then I see some people in their signatures and under their avatar "2010 v6 312hp". I found the GM press release here Horsepower increase for V6 engine The 2011 Camaro V-6 engine completed SAE certification testing and is now officially rated at 312 horsepower at 6500 rpm and 278 lb-ft of torque at 5100 rpm. This rating is eight horsepower higher than the previous year and also marks an increase in torque from the 2010 rating of 273 lb-ft. “The 304 horsepower in the 2010 Camaro was actually a conservative rating on our end,” said Tom Sutter, GM V-6 chief engineer. “But we knew already that this award-winning engine produced at least the amount of power we stated, but now we’ve gone the extra step in certifying the engine for this application and have verified an additional 8 horsepower.” So was there literally no changes or alterations in the engine? So doesn't this mean that all 5th Generation Camaro V6ers have 312HP? __________________ 35% tint, faded gill stripes, yellow stitching, black spoiler, decklid stripes To-Do List: Oracle HALO multicolor headlight + fogs kit; Bumblebee striping kit; Flowmaster 3-chamber cat-back; Roto-Fab Intake. Team LLT-M6

05-03-2011, 11:40 AM	#3
HondaPowered Drives: '09 Honda Civic LX Join Date: Jun 2009 Location: Knoxville Posts: 562	Yes, they guesstimated the 304. And then in 2011 they decided to get it certified, so it got tested and it was decided to have 312 hp __________________ Saving up for a camaro. Dream camaro is either a 1/2SS with RS, black with red stripes, or red with white stripes. No rice with my order.

05-03-2011, 12:45 PM	#9
HondaPowered Drives: '09 Honda Civic LX Join Date: Jun 2009 Location: Knoxville Posts: 562	I agree with you scrming The guy earlier made sure to comment on my "guesstimate" comment by saying that "They took the output of the CTS which is the same engine so they assumed the same." __________________ Saving up for a camaro. Dream camaro is either a 1/2SS with RS, black with red stripes, or red with white stripes. No rice with my order.

05-03-2011, 01:19 PM	#10
E.T. Drives: 2012 Camaro 2SS/RS Join Date: Jul 2010 Location: Cleveland, OH Posts: 3,273	Also, not sure why, but on the official specs/dyno graph released by GM, the V6 shows 313 HP. __________________

05-03-2011, 01:35 PM	#11
LoneStar Drives: 2011 IOM Camaro Join Date: Jul 2010 Location: Texas Posts: 3,446	Here you go: http://www.camarohomepage.com/news_photos/2011v6.htm __________________

05-03-2011, 04:48 PM	#12
rtcat600man having FUN now 13.66@101 Drives: 2010 2LT IOM Join Date: Nov 2009 Location: Clarkston, Michigan Posts: 9,230 View My Garage	Stock was 312 HP. Modified is now 330 HP. __________________ MY BUILD

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