2011 V6: Where'd they get the power?

[dagolfguy]

I wonder what Chevy tweaked on the '11 version of our engine to boost the HP?
It would be nice if we could obtain those additional ponies too.

[ROD1]

Originally Posted by dagolfguy

I wonder what Chevy tweaked on the '11 version of our engine to boost the HP?
It would be nice if we could obtain those additional ponies too.

Ima guess cams.

[mrray13]

8hp, and we already have VVT, I'm going to guess tune. Would be the easiest way to get the horsepower, and would go along with what others with a tune has seen at the ground, maybe 4-5rwhp. No retooling needed or new parts.

[joelster]

GM has a history of underrating their motors. They possibly didn't change a thing to it. Or they could have done something simple such as add +1 degree of timing under WOT conditions or leaned it out a teensy bit. I remember when the LS1 Camaro's came out with 305hp and were running mid/low 13's. They started popping up on dynoes all over and laying down 280-290 at the wheels which equates to around 350ish at the motor.

Even the crate motors that they sell always put down more power than what you pay for. They have to leave themselves some cushion in there for outside party testing which is why you'll never see them rate them right to the maximum that they are capable of. I remember when Ford rated their '99 Cobra Mustang at 320hp but they didn't actually produce that. They get sued a lot, lol.

Here's what happens when you falsely advertise your car makes power that it really doesn't:

http://www.encyclopedia.com/doc/1G1-56259362.html

Other manufacturers have had similar problems. Ford had to recall and repair an entire year's production of its SVT Mustang Cobra when its 1999 models fell well short of the 320 horsepower Ford had advertised.

[Edge.128]

If it was a tune do you think this could be added to the 2010 models while still keeping your warranty intact??

[camarowa]

Originally Posted by mrray13

8hp, and we already have VVT, I'm going to guess tune. Would be the easiest way to get the horsepower, and would go along with what others with a tune has seen at the ground, maybe 4-5rwhp. No retooling needed or new parts.

+1

[devildoc]

Ok I pulled this from the homepage:

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.”

The 3.6-liter V-6 with variable valve timing (VVT) and direct injection employs four independent cam phasers to change the timing of valve operation as operating conditions such as rpm and engine load vary. The result is linear delivery of torque, with near-peak levels over a broad rpm range, and high specific output (maximum horsepower per liter of displacement) supporting overall engine response and drivability. When combined, direct-injection and VVT enable an unmatched combination of power, efficiency and low-emissions in gasoline V-6 engines.

SAE certification is a voluntary power and torque certification procedure developed by the SAE Engine Test Code committee. This procedure (J2723) ensures fair, accurate ratings for horsepower and torque by allowing manufacturers to certify their engines through third-party witness testing. Chevrolet was the vehicle brand to begin using the procedure.

I take this to mean that the engine we have and the 2011 engine are the exact same, just this time around they certified it for 312hp!

[Edge.128]

so a change in number but no ACTUAL change.... interesting

[christianmotox]

Thats what i understood from the statement as well, that its been a 312hp engine all along.

[devildoc]

Feel sorry for the guys that bought the 304hp stickers to put on the car.....bummer!

[JChen]

I don't know about you guys, but I'll be walking around with my chest puffed out a bit more now that I know I've got 312!

Ha!!! Just jokes.

[Edge.128]

makes my decision a lot easier, 2010 model here I come!!

[MontyCarlo]

Press release from Ford tomorrow: "We checked our 2011 Mustang V6 engine and we were wrong, it really has 313 hp! Honest!"

[christianmotox]

well at least we passed the 305 of the mustangs