General Motors will introduce a new dual overhead cam (DOHC) 6.2L V8 in its next-generation C3XX pickup trucks, a new report finds. GM currently uses an overhead valve (OHV) pushrod version of the 6.2L V8 in its pickup trucks. The new engine is said to debut in 2012.
According to an internal UAW document made public by PickupTruck.com, the new engine will use variable valve timing and could use a four valve per cylinder setup. In addition, the engine will also use GM’s active fuel management — a technology that shuts down four cylinders at cruising speed.
But GM will not completely abandon pushrod engines. The document also outlined a new engine to replace the current 5.3L V8 engine but will retain its OHV design. The document failed to reveal the displacement of the new engine.
GM currently only produces one DOHC V8 — the 4.6L Northstar engine found in Cadillac and Buick models.
10/02, 9:21 AM
posted by:
Commodore
Sweet, where are the diesels? I think I heard something about a new Duramax diesel too
10/02, 9:22 AM
posted by:
autonut
OK, who can help me understand: 2 engine technologies for V8? Why? Is this an admission that pushrod at the end of the line? Or there will be two production lines for about the same displacement engines?
10/02, 9:23 AM
posted by:
Madcapp
GM to abandon early 1950’s design OHV pushrod crap? No way.
10/02, 9:23 AM
posted by:
autonut
Actually I read an article that GM did developed pretty innovative diesel V-8. Why not concentrate on something more useful?
10/02, 9:30 AM
posted by:
kosai03
Sounds like good new
10/02, 9:35 AM
posted by:
Oldsmobile
Let the pissing match begin.
IMO, this report is false. GM will introduce a DOHC “ultra’ V8 for Cadillac in a couple years though.
Madcapp, check this out: http://en.wikipedia.org/wiki/Overhead_camshaft
10/02, 9:39 AM
posted by:
Bryce
Anti-pushrod comments seem to lose a lot of credibility when pitted against the LS2.
Madcapp, GM V8s are known for dependability and power. I don’t sell any ‘crap’ V8s.
10/02, 9:53 AM
posted by:
mkM3
How bout a 6.2L DOHC V12 for Cadilac? Something they will need in a true S-Class, 7-series, A8, LS, XJ competitor.
10/02, 10:06 AM
posted by:
Raf
Sounds like GM is finally starting to catch up to speed with import technology. OHC (SOHC or DOHC) offer much higher engine speeds than OHV.
Why would someone use OHV other than space saving? Who knows.
Expect a huge increase in power output with the new DOHC.
10/02, 10:33 AM
posted by:
bcjohnso99
Raf,
Cadillac had variable valve timing in production 86 years before Honda put V-Tec into a full production car. GM had many technologies in use before the imports even existed.
OHV engines for trucks make sense. Even works pretty well in Z06 doesn’t it? Who else can produce a 500+hp ripper like the Z06 for a similar price. I’ll save you time searching – the answer is NO ONE. There’s the value of OHV engines.
10/02, 10:35 AM
posted by:
55amg
welcome to the new world?
10/02, 11:10 AM
posted by:
jackjimturkey
Put Four turbos on it, and Make the Pontiac Banshee!
10/02, 11:29 AM
posted by:
cookie4me
oh yeah, i can hear the banshee scream!
10/02, 11:31 AM
posted by:
kosai03
“Cadillac had variable valve timing in production 86 years before Honda put V-Tec into a full production car.”
So Cadillac was using VVT systems back when it was only a year or so old and still probably using flathead engines?
10/02, 11:38 AM
posted by:
Mar Solo
2012? Um, that’s kind of a long time from now, don’t you think?
10/02, 11:43 AM
posted by:
CTS DRIVER
oldsmobile good job showing theese fuctards dohc is just as old, 1914 hahahah madcapp, some of you guys dont know what the hell you are talking about you just want to bash a car company, jeeeeez. how does your foot taste?
10/02, 11:49 AM
posted by:
Oldsmobile
I do what I can to deny ignorance.
10/02, 11:57 AM
posted by:
94Mark8
There are many pluses for a OHV designed engine, especially in a truck…less weight, less complicated setup, and the biggest advantage over OHC engines is low end torque which is exactly what you want in a truck(non-desiel of course!).
10/02, 1:24 PM
posted by:
LP640
WOW (!) another innovation from GM this time it will hopefully achieve + 8 MPG
10/02, 1:30 PM
posted by:
Oldsmobile
LP640 Check the fuel economy on a DOHC Tundra 5.7 and a OHV 6.0 or 6.2 on a GMC or Chevy.
10/02, 2:23 PM
posted by:
1c3d0g
Yeah, where are the Diesels? That’s all I care about and so should GM.
10/02, 3:49 PM
posted by:
Mar Solo
I’m all for them introducing this engine, but I’m having a hard time with this 2012 business. In those 4 years how many other companies engines will surpass this one before it’s even introduced? (Provided it hasn’t been surpassed already.)
Affordable diesel please!
10/02, 5:03 PM
posted by:
kosai03
“There are many pluses for a OHV designed engine, especially in a truck…less weight, less complicated setup, and the biggest advantage over OHC engines is low end torque which is exactly what you want in a truck(non-desiel of course!).”
Comment by 94Mark8, posted on October2 at 11:57 am
You could give it even better low end torque, not to mention more torque overall, with a proper 4V OHC setup