Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
dave@hennessey
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Members Area > General Automotive + Other Cars Discussion


Reply
 
Thread Tools
Old 06-30-2013, 10:17 PM   #1
AutoAgenda


 
AutoAgenda's Avatar
 
Drives: 69 Camaro, 02 Escalade, 67 Eleanor
Join Date: Nov 2009
Location: Scottsdale AZ
Posts: 5,140
Arrow GM’s New 6.2 Liter V8 L86 vs. 3.6 Liter Twin Turbo V6 LF3: By The Numbers



GM’s New 6.2 Liter V8 L86 vs. 3.6 Liter Twin Turbo V6 LF3: By The Numbers

In the red corner, weighing in at 6.2 liters of displacement, we have GM’s new 6.2 liter V8 (L86). The naturally-breathing engine makes 420 horsepower and 450 lb-ft of torque in the all-new 2014 Silverado and 2014 Sierra, using the trusted small-block push-rod setup, but with a few modern technologies, including Variable Valve Timing, Cylinder Deactivation (or Active Fuel Management/AFM), and Direct Injection.

In the blue corner, weighing in at 3.6 liters of displacement, we have another new GM engine: a twin-turbocharged 3.6 liter V6 (LF3). The boosted six-banger also makes 420 horsepower, but 430 lb-ft of torque in the all-new 2014 Cadillac CTS. The engine is as power-dense as they get (116 horsepower per liter), representing the state-of-the art in powerplant engineering and design, through and through.

As you may have expected, both engines take entirely different approaches to optimizing the modern internal combustion engine, but put out the same amount of power and sport similar torque figures. As it stands, The General can pick and choose the best engine for the appropriate application — using the big and burly V8 for trucks, and the smaller, boosted six-pot for sports cars.

Feast your eyes on the similarities, and on the differences: (Chart on link)

Read more: http://gmauthority.com/blog/2013/06/...#ixzz2XlAm0Pq7

Very interesting article! This may be what is to come if EPA standards continue to raise the bar every year.
AutoAgenda is offline   Reply With Quote
Old 06-30-2013, 10:32 PM   #2
Nutro


 
Nutro's Avatar
 
Drives: 2011 2SS Synergy Green
Join Date: Nov 2011
Location: Austin, Texas
Posts: 3,670
AFM is back, huh? Will GM ever learn its lesson?
__________________
L99 With a Maggie
Nutro is offline   Reply With Quote
Old 06-30-2013, 11:06 PM   #3
Bhobbs


 
Bhobbs's Avatar
 
Drives: 2015 SS 1LE Red Hot, 1970 Chevelle
Join Date: Apr 2012
Location: Chino, CA
Posts: 6,987
No weight mentioned?
Bhobbs is offline   Reply With Quote
Old 07-01-2013, 06:22 AM   #4
Ucantctchme
 
Ucantctchme's Avatar
 
Drives: 2010 ss. 1990 RS the faster one.
Join Date: Jan 2011
Location: Orlando
Posts: 549
Quote:
Originally Posted by Nutro View Post
AFM is back, huh? Will GM ever learn its lesson?
As long as there is CAFE there will be afm.
__________________
Vararam, XS Power longtubes and exhaust with Magnaflow mufflers, 1LE gears, Vengeance Racing spec'd comp cam with all supporting valvetrain upgrades, Melling Pump. QTP cutouts. 480rwhp.http://i64.photobucket.com/albums/h179/ucantctchme/d5c3102c.jpg
Ucantctchme is offline   Reply With Quote
Old 07-01-2013, 07:34 AM   #5
FenwickHockey65
General Motors Aficionado
 
FenwickHockey65's Avatar
 
Drives: 2023 GMC Canyon, 2020 Colorado
Join Date: Aug 2008
Location: Florida
Posts: 37,371
Send a message via AIM to FenwickHockey65
Quote:
Originally Posted by Nutro View Post
AFM is back, huh? Will GM ever learn its lesson?
AFM never went away. And for the vast majority of people out there it's a non-issue.
__________________
2023 GMC Canyon Elevation
2020 Chevrolet Colorado W/T Extended Cab (State-issued)
FenwickHockey65 is offline   Reply With Quote
Old 07-01-2013, 07:54 AM   #6
KKreme15

 
KKreme15's Avatar
 
Drives: C6 Z06
Join Date: Jan 2010
Location: Dayton, MD
Posts: 1,645
VR38DETT is way more power dense than LF3
KKreme15 is offline   Reply With Quote
Old 07-01-2013, 08:04 AM   #7
PeeBee

 
PeeBee's Avatar
 
Drives: "Bee" ZL585, Dark Blue Suburban.
Join Date: Nov 2010
Location: Luxemburg
Posts: 1,244
Quote:
Originally Posted by KKreme15 View Post
VR38DETT is way more power dense than LF3
All down to boost levels...

Cosworth's/Jaguar's CX-75 concept engine is a 1.6 and has 500+hp... so on that matter, it beats GM's and Nisssan's efforts
PeeBee is offline   Reply With Quote
Old 07-01-2013, 08:10 AM   #8
Number 3
Hail to the King baby!
 
Number 3's Avatar
 
Drives: '19 XT4 2.0T & '22 VW Atlas 2.0T
Join Date: Dec 2008
Location: Illinois
Posts: 12,159
GM isn't the only manufacturer with AFM. Fiat uses it on all their V8s if I'm not mistaken and even Honda uses it on their V6s.

The issue with AFM isn't cutting the cylinders off it's isolating the engine so you can't feel it. One of the biggest issues is the exhaust. As the engine shakes more in 4 cylinder mode, so does the exhaust and if it isn't isolated you can feel it.

You can barely feel it in the FS Pickups and SUVs. But go look at the Camaro exhaust. I think in 2011 they added one more flex coupling for a total of 4 I believe to try and better isolate the exhaust.

It's very tough to do when the exhaust is hanging off the body. The trucks have everything attached to the frame with one more level of isolation through the body mounts.
__________________
"Speed, it seems to me, provides the one genuinely modern pleasure." - Aldous Huxley
Number 3 is offline   Reply With Quote
Old 07-01-2013, 09:18 AM   #9
DGthe3
Moderator.ca
 
DGthe3's Avatar
 
Drives: 05 Grand Am GT
Join Date: Jul 2007
Location: Niagara, Canada
Posts: 25,372
Send a message via MSN to DGthe3
Quote:
Originally Posted by Number 3 View Post
GM isn't the only manufacturer with AFM. Fiat uses it on all their V8s if I'm not mistaken and even Honda uses it on their V6s.

The issue with AFM isn't cutting the cylinders off it's isolating the engine so you can't feel it. One of the biggest issues is the exhaust. As the engine shakes more in 4 cylinder mode, so does the exhaust and if it isn't isolated you can feel it.

You can barely feel it in the FS Pickups and SUVs. But go look at the Camaro exhaust. I think in 2011 they added one more flex coupling for a total of 4 I believe to try and better isolate the exhaust.

It's very tough to do when the exhaust is hanging off the body. The trucks have everything attached to the frame with one more level of isolation through the body mounts.
I don't believe the 6.4 in the SRT8s has cylinder de-activation.

Another part of AFM that I think affects truck owners less than Camaro owners (and in particular, Camaro owners on this website) is aftermarket exhausts. I'm sure GM does what they can to eliminate the unpleasantness of the 3.1L V4 sound through careful exhaust tuning. But if you replace the muffler with one that isn't trying to minimize some of the bad frequencies (and instead might amplify a few of them), its not going to be a fun experience.
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________
Originally Posted by FbodFather
My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors......
........and HE WOULD KNOW!!!!
__________________

Camaro Fest sub-forum
DGthe3 is offline   Reply With Quote
Old 07-01-2013, 09:37 AM   #10
Stew


 
Drives: 92 Luminadead/01 Dakota/97 F150 4x4
Join Date: Jul 2009
Location: Eastern, Ky
Posts: 3,789
Quote:
Originally Posted by Number 3 View Post
GM isn't the only manufacturer with AFM. Fiat uses it on all their V8s if I'm not mistaken and even Honda uses it on their V6s.

The issue with AFM isn't cutting the cylinders off it's isolating the engine so you can't feel it. One of the biggest issues is the exhaust. As the engine shakes more in 4 cylinder mode, so does the exhaust and if it isn't isolated you can feel it.

You can barely feel it in the FS Pickups and SUVs. But go look at the Camaro exhaust. I think in 2011 they added one more flex coupling for a total of 4 I believe to try and better isolate the exhaust.

It's very tough to do when the exhaust is hanging off the body. The trucks have everything attached to the frame with one more level of isolation through the body mounts.
Actually CHRSLER'S V8s do. 1 Chrysler is not 100% owned by Fiat, 2 the engines and a lot of the tech is different enough throguh Fiats different companies (Maserati, Ferarri, Fiat, lancia, Alfa Romeo) differes enoguh that even if they did it is important to mention which umbrella the engine you are speaking of falls under.

Quote:
Originally Posted by DGthe3 View Post
I don't believe the 6.4 in the SRT8s has cylinder de-activation.

Another part of AFM that I think affects truck owners less than Camaro owners (and in particular, Camaro owners on this website) is aftermarket exhausts. I'm sure GM does what they can to eliminate the unpleasantness of the 3.1L V4 sound through careful exhaust tuning. But if you replace the muffler with one that isn't trying to minimize some of the bad frequencies (and instead might amplify a few of them), its not going to be a fun experience.
The 6.4 on automatic SRTs do, on manuals they do not. Same with the 5.7.
Stew is offline   Reply With Quote
Old 07-01-2013, 10:17 AM   #11
RocketCutlass
Property USMC
 
RocketCutlass's Avatar
 
Drives: 95 Caprice 9C1
Join Date: May 2009
Location: Camp Lejeune
Posts: 476
Guess no one is going to mention the RPO of the 6.2 which is L86. Wonder what's next in line as far as L87 and..........
RocketCutlass is offline   Reply With Quote
Old 07-03-2013, 09:09 PM   #12
Number 3
Hail to the King baby!
 
Number 3's Avatar
 
Drives: '19 XT4 2.0T & '22 VW Atlas 2.0T
Join Date: Dec 2008
Location: Illinois
Posts: 12,159
Quote:
Originally Posted by Stew View Post
Actually CHRSLER'S V8s do. 1 Chrysler is not 100% owned by Fiat, 2 the engines and a lot of the tech is different enough throguh Fiats different companies (Maserati, Ferarri, Fiat, lancia, Alfa Romeo) differes enoguh that even if they did it is important to mention which umbrella the engine you are speaking of falls under.



The 6.4 on automatic SRTs do, on manuals they do not. Same with the 5.7.
Sorry majority owned makes them Fiat. JMO. Will you guys buy it in 6 months when they own 100%? They are controlled by Fiat plane and simple.

It was really close to being GM if the government had their way but that didn't happen so Fiat basically took the 2 billion they got from GM and got a controlling stake in Chrysler.

So one could argue that Rick Wagner gave Fiat Chrysler.
__________________
"Speed, it seems to me, provides the one genuinely modern pleasure." - Aldous Huxley
Number 3 is offline   Reply With Quote
Old 07-04-2013, 12:14 AM   #13
evilstevie
 
Drives: 2022 RBM 2SS 1le
Join Date: Apr 2012
Location: CNY
Posts: 144
I'd be a lot more interested in seeing the physical dimensions and weight of both motors.
evilstevie is offline   Reply With Quote
Old 07-04-2013, 12:18 AM   #14
Steve Dallas
Commits weekly crime
 
Steve Dallas's Avatar
 
Drives: 2017 Camaro 1LT
Join Date: Nov 2009
Location: Camano Island, WA
Posts: 9,513
Quote:
Originally Posted by Number 3 View Post
GM isn't the only manufacturer with AFM. Fiat uses it on all their V8s if I'm not mistaken and even Honda uses it on their V6s.

The issue with AFM isn't cutting the cylinders off it's isolating the engine so you can't feel it. One of the biggest issues is the exhaust. As the engine shakes more in 4 cylinder mode, so does the exhaust and if it isn't isolated you can feel it.

You can barely feel it in the FS Pickups and SUVs. But go look at the Camaro exhaust. I think in 2011 they added one more flex coupling for a total of 4 I believe to try and better isolate the exhaust.

It's very tough to do when the exhaust is hanging off the body. The trucks have everything attached to the frame with one more level of isolation through the body mounts.
Audi uses it on their V8 as well (at least on the S6 I've been looking at)...
__________________
2017 Camaro 1LT - Blue Barchetta IV
I fire up the willing engine, responding with a roar. Tires spitting gravel I commit my weekly crime.
Steve Dallas is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:50 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.