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isszy
11-29-2005, 01:38 PM
SS buyers beware: Holden is expected to offer a 6.0-litre Gen IV V8 by year's end

By MARTON PETTENDY 25 November 2005
HOLDEN has refused to comment on media reports that it will replace its 5.7-litre Gen III V8 with an all-new 6.0-litre V8 by the end of this year.

But GoAuto has learned some Holden dealers are currently taking orders for models fitted with the all-new Gen IV V8 and that stocks of the upgraded models vehicle will be in dealerships by the end of next month.

"If we have anything to say about future products we’ll announce that in due course, not because there’s been speculation about powertrains," Holden spokesman Jason Laird told GoAuto.

"You can ask as much as you like but we’re not saying anything. We don’t respond to speculation," he said.

Holden’s current General Motors-built V8 - codenamed LS1 and employed by Commodore SV8 sedan, Commodore SS sedan and ute, Crewman SS, Adventra CX8/LX8, Berlina V8, Calais V8, Statesman V8, Caprice and Monaro models – does not comply with next year’s strict new exhaust emissions regulations.

Australia's new Step 2 emissions standard, based on Euro 3 regulations already in place in Europe, comes into force on January 1, 2006.

Just as Ford was forced to upgrade its six-cylinder and V8 engines by then - as part of the revised BF Falcon and SY Territory ranges released in October - the new law means that Holdens powered by the current Gen III V8 must be built this year. Gen III-engined vehicles may still be sold in 2006 provided they carry a 2005 build plate.

Rather than committing resources to upgrade the Gen III to meet the 2006 rules, it’s believed Holden will switch to GM’s all-new Gen IV 6.0-litre V8, codenamed L76 (pictured left).

Originally expected to debut in the all-new VE Commodore around August next year, the Step 2-compliant Gen IV is not the 297kW 6.0-litre LS2 V8 that powers both the US-market Corvette and local Holden Special Vehicles models, which will continue to offer the flagship GM V8 exclusively.

Instead, the fourth-generation small-block GM V8 is an all-new design, built for mainstream applications including the Chevrolet Tahoe, GMC Yukon and the new Cadillac Escalade.

Another all-aluminium design, the L76 features variable valve timing, a revised cylinder block design with external knock sensors and "Displacement On Demand" cylinder shutdown technology to reduce fuel consumption.

Information recently revealed by GM claims that along with five per cent more power than the Gen III’s 250kW peak output, the Gen IV delivers fuel economy improvements of up to seven per cent over the Gen III. It’s also said to offer improved low-rpm torque, as well as being quieter and smoother.

The 6.0-litre version of the L76 is claimed to produce a best-in-class 264kW. The 5.4-litre V8 available in BF Falcon, Fairmont Ghia and Fairlane produces 230kW, while Ford’s XR8 offers 260kW and FPV’s HSV-rivalling models deliver 290kW.

The L76 is also produced in range-topping 6.2-litre guise, which develops 298kW – 1kW more than HSV models’ LS2 V8.

Including cast-iron and aluminium versions, GM says the Gen IV will also be built in 4.8 and 5.3-litre forms – all of which are also compatible with a six-speed automatic.

http://www.goauto.com.au/mellor/mellor.nsf/story2/ 26619717EE4B37C7CA2570C40003083F




DevilYellow
11-29-2005, 08:05 PM
That was confusing - because I thought the motor they were talking about was a 6.2L.

I cant wait until we have a cam-less motor ;)

And really the LS2 could have DOD, the castings are all the same on the GenIV stuff. This sounds like its and LS2 with a smaller cam, DOD, and problably lower compression.

OhFoGTO
11-29-2005, 08:10 PM
That was confusing - because I thought the motor they were talking about was a 6.2L.

I cant wait until we have a cam-less motor ;)

And really the LS2 could have DOD, the castings are all the same on the GenIV stuff. This sounds like its and LS2 with a smaller cam, DOD, and problably lower compression.
i was about to post the saaame thing(almost). all them kilowatts makes my brain hurt. So is the "L76" a 6.0L or 6.2L...and with more or less hp than the LS2?

LordGriNz
11-29-2005, 08:21 PM
i was about to post the saaame thing(almost). all them kilowatts makes my brain hurt. So is the "L76" a 6.0L or 6.2L...and with more or less hp than the LS2?

I believe the conversion is:

KW x 1.341 = HP

HP x .7457 = KW

69project
11-29-2005, 09:53 PM
This months M/T talks about the new truck engines, which this sounds like it is. There is going to be a 6.0 and 6.2 truck engine (what ever else they stick it in) as well as the 5.3. The 5.3 is pumped up to 325 hp and 6.2 is up near LS2 levels, cant remember. The 6.2 will only go in SUV's like the Denali and Escalade, while the 6.0 is for the HD trucks. Hope this helps the General out, he needs it.

isszy
11-30-2005, 06:54 PM
Comes in 2 versions, 6.0 & 6.2
6.0 = 264Kw = 354 BHP
6.2 = 298Kw = 400 BHP

ANZAC Mat
12-12-2005, 07:34 PM
And really the LS2 could have DOD, the castings are all the same on the GenIV stuff. This sounds like its and LS2 with a smaller cam, DOD, and problably lower compression.

I hate to flame you when I don't have a electronic reference to provide you but the November Wheels magazine here in Aus specifically states that the LS76 has a diferent block casting to allow variable valve timing and hence DOD. Knock sensors are moved to make way for VVT. Sorry I don't have a direct quote but when I get home from work I'll attempt to write one from the article. In the meantime, sorry for being vague.

GTO_Scott
12-12-2005, 11:58 PM
I hate to flame you when I don't have a electronic reference to provide you but the November Wheels magazine here in Aus specifically states that the LS76 has a diferent block casting to allow variable valve timing and hence DOD. Knock sensors are moved to make way for VVT. Sorry I don't have a direct quote but when I get home from work I'll attempt to write one from the article. In the meantime, sorry for being vague.

Right, they are moving away from the Gen III 5.7 liter LS1 to the newer Gen IV design setup, which the LS2 is a member of. They moved the cam and knock sensors in the LS2 to preprare for DoD in the newer engines to come.