GM announces the VVT GenIV

[SSbaby]

Australian Exclusive! Yep, you guys hear it before the Aus Holden forums...

More head-kicking from the General!

New engines benefit from advanced technologies today
While many of the advanced technologies demonstrated to journalists were for future, unspecified powertrains, the new powertrains GM is launching today benefit from fuel-saving and performance enhancing features, like Displacement On Demand and variable valve timing.

“The new variants of Gem IV small-block V-8 are a perfect example of applying advanced, fuel saving technology to a high-volume of powertrains today,” said Stephens.

Multiple variants of the new small-block engines feature Displacement On Demand, as well as variable valve timing (VVT). Displacement On Demand seamlessly alternates the engine between eight- and four-cylinder operation, improving engine efficiency by as much as 12 percent in some vehicles.

Variable valve timing optimizes engine performance by continuously adjusting intake and exhaust valve timing in relation to the crankshaft. The introduction of variable valve timing in these engines is the industry’s first application of VVT on a mass-produced V-8 overhead valve engine.

Complete details of the new engine variants will be provided at a later date.

Six-speed automatics deliver improved efficiency, performance
In addition to improving engine efficiency, GM is launching a broad portfolio of advanced six-speed automatic transmissions to increase overall powertrain performance.

“During the next five years, GM will launch 10 new automatic six-speed transmission variants," said Stephens. "In fact, by 2010, GM will be producing more than three million six-speed transmissions per year."

GM six-speed automatic transmissions use a wide gear ratio spread to improve both performance and fuel economy over traditional four-speed automatics.

GM will launch seven of the six-speed automatic variants in North America and Europe . These include rear-wheel variants of the new Hydra-Matic six-speed, which debuted with the Hydra-Matic 6L80 in the 2006 Chevrolet Corvette and Cadillac STS-V and XLR-V. Also included in the new rear-wheel drive six-speeds is a new Allison 1000 six-speed, introduced in the 2006 Chevrolet Silverado HD and GMC Sierra HD pickups.

Rounding out the seven variants is the new front-wheel drive (FWD) Hydra-Matic 6T70 six-speed automatic transmission. The 6T70 is one of the industry’s most advanced FWD six-speed transmissions and is scheduled to debut in the all-new 2007 Saturn Aura midsize sedan.

SSbaby walks away leaving a trail of destruction... :

[4.9 EF Futura]

About time. Only about 8 years behind ford in the US. I guess the proof in your pudding will be if GMH decides to adopt the new configuration?? Nonetheless, sounds like a formidable donk.

Surely one still has to question the guise of introducing a mass produced 6.0L engine as oil prices show no sign of falling - ever??

4.9 EF sits comfortably as SSbaby walks away.

[merlin]

Whats your point SSBaby - VVT is hardly a "new advanced" technology and Fords Aus six speed will be out in October.

?

[SSbaby]

Originally Posted by merlin

Whats your point SSBaby - VVT is hardly a "new advanced" technology and Fords Aus six speed will be out in October.

?

Ohh no point, I just posted the above info so that it doesn't get read. (where's the whistling smilie?)

[SSbaby]

Originally Posted by 4.9 EF Futura

About time. Only about 8 years behind ford in the US. I guess the proof in your pudding will be if GMH decides to adopt the new configuration?? Nonetheless, sounds like a formidable donk.

Surely one still has to question the guise of introducing a mass produced 6.0L engine as oil prices show no sign of falling - ever??

4.9 EF sits comfortably as SSbaby walks away.

Where's VVT on the Ford DOHC V8s?

4.9 EF Futura just got :

;)

[4Vman]

Originally Posted by SSbaby

Where's VVT on the Ford DOHC V8s?

4.9 EF Futura just got :

;)

It doesnt need it, DOHC Boss 290 makes 53.7 KW/L
GenIV 297 makes 49.5 kW/L

Its 8% more power efficient per L.

[SSbaby]

Originally Posted by 4Vman

It doesnt need it, DOHC Boss 290 makes 53.7 KW/L
GenV 297 makes 49.5 kW/L

They're paper figures... power is never felt on paper.

Anyway, GM use different measurement standards to Ford.

[4Vman]

Originally Posted by SSbaby

They're paper figures... power is never felt on paper.

Anyway, GM use different measurement standards to Ford.

Sounds like an excuse to me! :

[Steffo]

Originally Posted by 4Vman

It doesnt need it, DOHC Boss 290 makes 53.7 KW/L
GenIV 297 makes 49.5 kW/L

Its 8% more power efficient per L.

Its also heavier, physically larger, thirstier, ultimately less powerful, can't rev as much.....

Not that I like GM, but the Ford engine isn't quite that excellent either.

[RED_EL_XR8]

Originally Posted by Steffo

but the Ford engine isn't quite that excellent either.

Is that in direct comparison to an aging Nissan 4 potter? Hmmm?

Originally Posted by 4Vman

It doesnt need it, DOHC Boss 290 makes 53.7 KW/L
GenIV 297 makes 49.5 kW/L

Not taking sides, and I love the Boss 290 (with a few mods), but that's a pointless argument.

Gen IV makes more power
Gen IV consistently returns better fuel consumption
Gen IV pushes Aus model cars to better times/perf than Boss engines cars
Gen IV will have DOD and hence economy gap will widen

That's why I keep saying FPV need to push the boundaries harder. Blue blood. Let's get in front!!!

[4.9 EF Futura]

Originally Posted by SSbaby

Where's VVT on the Ford DOHC V8s?

4.9 EF Futura just got :

;)

I didnt realise I had specified the DOHC 5.4??

[SSbaby]

Originally Posted by 4.9 EF Futura

I didnt realise I had specified the DOHC 5.4??

Yes but you wouldn't exactly pit the puny 3V SOHC 5.4L against even the LS1 would you?

[RED_EL_XR8]

Originally Posted by SSbaby

Yes but you wouldn't exactly pit the puny 3V SOHC 5.4L against even the LS1 would you?

Puny? :

[4.9 EF Futura]

Originally Posted by SSbaby

Yes but you wouldn't exactly pit the puny 3V SOHC 5.4L against even the LS1 would you?

I wasnt aware this was the purpose of the discussion... I was under the impression the blue oval supporters were being shamed by the ground-breaking technological brilliance of general motors?

Congratulation GM on implementing something Toyota Echo's have had for years. Ignoring the fact there performance cars have had for almost over decades.

Oh, can't forget Honda VTEC which started it all.

[merlin]

your all missing the point - forget ford vs holden - the article is claiming that VVT, six speed autos (due in the next 5 years!) are "advanced technologies" - you have to be kidding...they have been available for years.

[SSbaby]

Originally Posted by merlin

your all missing the point - forget ford vs holden - the article is claiming that VVT, six speed autos (due in the next 5 years!) are "advanced technologies" - you have to be kidding...they have been available for years.

But you're missing the point that it would make a tough engine even tougher... at least, I hope it shuts the technophiles up.

[merlin]

Originally Posted by SSbaby

But you're missing the point that it would make a tough engine even tougher... at least, I hope it shuts the technophiles up.

well you are correct on that point - i simply took offence to the language used in the article "advanced" pfft...

[MITCHAY]

Its said 10 new 6spd auto variants during the next 5 years not they will be available in 5 years. The 2006 Chevy gets one of them so maybe the VE might get one of them aswell. However it aint nothing new technology wise its still a good direction to go.

[SSbaby]

Originally Posted by MITCHAY

Its said 10 new 6spd auto variants during the next 5 years not they will be available in 5 years. The 2006 Chevy gets one of them so maybe the VE might get one of them aswell. However it aint nothing new technology wise its still a good direction to go.

Don't forget about the joint GM-Ford transaxle developed for FWD and AWD cars. That 6spd auto would also be included in that stat.

The main news for Holden would be the new 6-spd auto for RWDs, similar to the Corvette's and possibly available in VE, next year.

It's all good for both companies, can't argue with that.

[BlueRaven]

People do enjoy arguing without point don't they?

[SSbaby]

Originally Posted by BlueRaven

People do enjoy arguing without point don't they?

I knew this forum would liven up! :

Cheers

Common guys there is abit of credit due here. It sets a standard for potential local adoption on our V8's (BOSS engines specifically). It just keeps pushing the boundries for both local V8 manufacturers to keep improving.

[4.9 EF Futura]

Originally Posted by RATT

Common guys there is abit of credit due here. It sets a standard for potential local adoption on our V8's (BOSS engines specifically). It just keeps pushing the boundries for both local V8 manufacturers to keep improving.

I wouldnt expect to much credit to be granted in response to a :thebirds: style post...

[SSbaby]

Originally Posted by 4.9 EF Futura

I wouldnt expect to much credit to be granted in response to a :thebirds: style post...

Well I call it good humoured! Note: the sarcasm "leaving a trail of destruction" was implied metaphorically!

I thought I was doing the right thing by posting the info for you guys?

[4.9 EF Futura]

Originally Posted by SSbaby

Well I call it good humoured! Note: the sarcasm "leaving a trail of destruction" was implied metaphorically!

Sarcasm often lost in translation from tought into text... but yes, I agree the thread has thus far been in good humour. Regardless of my (obviously) biased opinion it is certainly interesting to see what the 'reds' have tucked up their sleeve.

Beware... I note the sour one lurks in the background of this thread.... awaiting the line to be crossed so that his wrath may be borne by all!

Fellas come on! It's all good. Good info to have!

[Sourbastard]

OK consider the news appreciated, consider it read, and consider this thread closed cause I'm sick of this same old argument.