New 6.2L Chevrolet LS3 for 2008

[Thunder Kiss]

I wonder how long before these start being fitted to Holdens?

All-new LS3 6.2L V-8 engine:
430 hp (321 kW)
424 lb.-ft. of torque (575 Nm)
High-flow cylinder heads
Enhanced valvetrain
High-flow intake manifold
Larger-bore block with structural enhancements

"The LS3 features an aluminum cylinder block with cast iron cylinder liners. In addition to its larger bores, which help create a 376-cubic-inch displacement, the block casting also features revisions and machining in the bulkheads that enhance its strength and improved bay to bay breathing. But while the bore of the 6.2L engine is increased when compared with the previous 6.0L engine, the engine’s stroke remains at 3.62 inches (92 mm). The pistons for the larger 6.2L engine also are new and are designed for its high-rpm performance capability.

Breathing for the new 6.2L engine is accomplished via new, high-flow cylinder heads. They’re based on the large port/large valve design found on the LS7 engine and other GM L92 engines, with larger-capacity, straighter intake ports. The design optimizes intake flow to the combustion chamber and the exhaust ports are also designed for better flow.

Complementing the larger-port design of the heads are commensurately sized valves. The intake valve size alone increases from 2.00 inches (50.8 mm) to 2.16 inches (55 mm) – an increase of nearly 9 percent. The intake valves feature lightweight hollow stems, which enable the engine’s 6,600-rpm capability. The exhaust valves also are large, measuring 1.60 inches (40.4 mm) in diameter.

To accommodate the engine’s large valves and enable more direct intake port flow, the intake-side rocker arms are offset 6 mm between the valve tip and the push rod. Actuating the valves is a new camshaft, with intake-side lobes providing more than a 5-percent percent in increase in lift, from 0.521-inch to 0.551-inch (13.25 mm to 14 mm). Exhaust-valve lift remains unchanged from the LS2. The camshaft timing was revised to optimize performance with the higher-lift intake cam profile.

Ensuring the cylinder heads receive all the air they can handles falls to a new, acoustically tuned intake manifold. The composite design is manufactured with a “lost core” process that improves runner to runner variation and reduces airflow losses. An acoustic foam material is used to reduce radiated engine noise; it is sandwiched between the outer top of the manifold and an additional “skull cap” acoustic shell. Also new beauty covers atop the engine shield the rocker covers and also feature a noise-reducing, acoustically tuned insert to provide a more refined engine sound."


More info here

[TheSneakiness]

I suppose we'll see these in the VE update...

[futura]

In otherwords, the New orion GT should at least have 320kw to on par with HSV when this engine comes available!

[XR8-260]

Originally Posted by futura

In otherwords, the New orion GT should at least have 320kw to on par with HSV when this engine comes available!

A wider powerband for the XR8/GT would be nice too.

[McobraR]

well thats just great, just when Ford is about to take the lead with their new Boss engine aka hurricane (assuming they havent cancelled it again as some rumours have said), here comes GM with a bloody awesome 6.2 V8. i think its clear the V8 crown belongs to Holden/GM, and will for some time.
GTHO? i think never, yes you can supercharge a 5.4 but personally, i think thats a disgrace to the name. To me GTHO = raw power, not force inducted.
Lets see what the future holds for the old henry.

[fou_bleu]

Wishful thinking if FPV will pull their fingers out of their asses and let the GT get ATLEAST 300Kw!!!

[Ives]

Originally Posted by v8motormouth

Wishful thinking if FPV will pull their fingers out of their asses and let the GT get ATLEAST 300Kw!!!

I reckon the Boss powered Falcons/GT would be alrite if Ford finds a way to shed 100kgs off.

[Cruise]

Originally Posted by v8motormouth

Wishful thinking if FPV will pull their fingers out of their asses and let the GT get ATLEAST 300Kw!!!

no way!!!! FPV's blow up after 300 dont you know?

[Falcon Coupe]

Cubes = torque, the Boss needs a capacity upgrade.

[sleekism]

I think Ford needs a separate V8 for their cars and for their SUV's.

Am I wrong in thinking that the modular V8 was designed with the F-150 and Lincoln Navigator in mind not the mustang being a heavy engine with a long stroke.

[Powdered Toast Man]

Originally Posted by sleekism

I think Ford needs a separate V8 for their cars and for their SUV's.

Am I wrong in thinking that the modular V8 was designed with the F-150 and Lincoln Navigator in mind not the mustang being a heavy engine with a long stroke.

They do, their cars use the 4.6 including the Mustang, and your right the 5.4 comes out of the F series and SUVs.

I'd rather have the 5.4 though, much more torque.

If GM didn't have the Corvette I doubt they'd be developing these sorts of engnes either. Ford US dont have a supercar (apart from the GT, but I think the engine was an afterthought) just the Mustang which is more of an everyday performance car. The GM competitors to the 'stang were the Camaro and Trans Am not the Corvette, which is a rung higher on the food chain.

[Cobra]

Originally Posted by V8GLI

They do, their cars use the 4.6 including the Mustang, and your right the 5.4 comes out of the F series and SUVs.

I'd rather have the 5.4 though, much more torque.

If GM didn't have the Corvette I doubt they'd be developing these sorts of engnes either. Ford US dont have a supercar (apart from the GT, but I think the engine was an afterthought) just the Mustang which is more of an everyday performance car. The GM competitors to the 'stang were the Camaro and Trans Am not the Corvette, which is a rung higher on the food chain.

I doubt they would either, but the fact is that they do! And it filters down the family to HSV. These things will come in a couple of years I reckon, and unless ford have soemthing briliant with this new engine, they are rooted as far as the V8s go. All I can say is thank God we have the turbocharged 6!

[Powdered Toast Man]

Originally Posted by Cobra

I doubt they would either, but the fact is that they do! And it filters down the family to HSV. These things will come in a couple of years I reckon, and unless ford have soemthing briliant with this new engine, they are rooted as far as the V8s go. All I can say is thank God we have the turbocharged 6!

Very true.

My point was that GM don't design the engines for Holden to put in the Commodore it's just good fortune that Holden have access to such a powerful engine.

Ford on the other hand don't have a car to develop a big powerful sports car based V8 for so why would they spend money doing it. Designing one for our relatively tiny sales, global wise, of Falcons isn't cost effective.
Lets hope that their is something in the US Ford catalog that requires one.

[Bud Bud]

Originally Posted by V8GLI

Very true.

My point was that GM don't design the engines for Holden to put in the Commodore it's just good fortune that Holden have access to such a powerful engine.

Ford on the other hand don't have a car to develop a big powerful sports car based V8 for so why would they spend money doing it. Designing one for our relatively tiny sales, global wise, of Falcons isn't cost effective.
Lets hope that their is something in the US Ford catalog that requires one.

I have always wondered why Ford in the States let the Mustang just idle along. This car has tremendous heritage the same as the Corvette. GM use the Corvette as its pinnacle of sport/muscle car prowess and because of this spends the right sort of money to keep it there. That is why the engines are available for use across the whole GM family.

This has always been the case because the first V8 powered Monaro’s and Kingswood/Prems were Chevs as well. A little later Ford US also introduced the Cleveland into the Mustang. This engine was also available across the global Ford Family, F series, 2 door muscle cars and 4 door family sedans alike.

So the question remains, why hasn't the Mustang been allowed to keep the pace of its heritage over the years? I know you can't blame it on the energy crisis of the 70's (4 cylinder versions etc) because GM still did not compromise the Corvette through this era either.

People, while the Corvette remains popular in the States even though it is considered low volume for the Americans, Holden will always have access to "hi-po" V8s for the Australian market. Ford need to look at this.

[sleekism]

What is the actual cost of the new LS3, just because it exists doesnt mean Holden is going to use it.

How long has the 7 litre corvette engine been out and Holden hasn't adopted.

Personally i laugh every time a new GM motor comes out as they have dug themselves into a hole 5litre>5.7litre>6.0litre and now 6.2 litre, i think the GM OHV V8 has peaked efficiency wise and now the only way to make more power is to increase capacity.

The Modular V8 on the other hand has lots of potential....i think QIVCT, alloy block, and stronger reciprocating parts and I think the modular has potential.

I imagine the modular V8 should be the best of both worlds-american muscle combined with japanese efficiency.

Can you imagine the efficiency of a Honda motor in a 5.4litre V8.

Not many people know this but the heads in the XE and XF were designed by Honda, Ford needs to stop being so conservative even redneck Harley-Davidson is going hi tech with their new motors.

Cmon Ford stuff your motor hi tech crap!!!

[Powdered Toast Man]

Originally Posted by sleekiskm

The Modular V8 on the other hand has lots of potential....i think QIVCT, alloy block, and stronger reciprocating parts and I think the modular has potential.

I imagine the modular V8 should be the best of both worlds-american muscle combined with japanese efficiency.

Can you imagine the efficiency of a Honda motor in a 5.4litre V8.

Not many people know this but the heads in the XE and XF were designed by Honda, Ford needs to stop being so conservative even redneck Harley-Davidson is going hi tech with their new motors.

Cmon Ford stuff your motor hi tech crap!!!

Yeah I agrre, look at some of the European stuff like BMW, Merc and Audi as well as the Jap stuff. They make big figures out of small atmo displacement.

[OzJavelin]

Originally Posted by sleekism

Personally i laugh every time a new GM motor comes out as they have dug themselves into a hole 5litre>5.7litre>6.0litre and now 6.2 litre, i think the GM OHV V8 has peaked efficiency wise and now the only way to make more power is to increase capacity.

Personally I laugh each time I see someone scared of "larger" capacity V8s. It doesn't really matter if GMs engine is bigger and less efficient if it is simpler, more powerful and uses less fuel ... as has been the case with the 5.7L and 6.0L compared to their Ford equivalents.

[ The three primary reasons "big" engines are usually poo-pooed is because they are thirsty, heavy and physically large. Again the GM V8 engine family wins there compared to it's "smaller" Ford rival. ]

I agree with most people here, Ford need to have a good hard look at their V8 programme ... it would be a real shame if either local manufacturer got so far ahead that the other just couldn't catch up ...

[EXECJIM]

Originally Posted by sleekism

Personally i laugh every time a new GM motor comes out as they have dug themselves into a hole 5litre>5.7litre>6.0litre and now 6.2 litre, i think the GM OHV V8 has peaked efficiency wise and now the only way to make more power is to increase capacity.



Cmon Ford stuff your motor hi tech crap!!!

And so does every person wanting more power and getting it from a stock Holden :

[4Vman]

What % of large car sales (Holden and Ford) are performance V8's?

[banarcus]

A modular with wider bore spaces would fix this.

[mattcosa]

Mark Fields (president of the ford america's - i think) has reinstated the 6 ltr + V8 program for performance rear-drive vehicles. Dont know the exact details or anything else other than that. I know that originally is was supposed to be in different sizes from 6.2 litres and up (ala modular 4.6, 5.0, 5.4).

Unfortunately, we were meant to see this v8 now(ish) - but because Ford U.S was in so much financial trouble they had to can it years ago.

All this may have changed but that was the last time I heard of any movement in Ford V8 dev.

[mattcosa]

found some info: but its wikipedia so how reliable it is who knows:

http://en.wikipedia.org/wiki/Ford_Boss_engine

[FlipXW]

Originally Posted by mattcosa

found some info: but its wikipedia so how reliable it is who knows:

http://en.wikipedia.org/wiki/Ford_Boss_engine

interesting read though

[apolloxbgt]

Originally Posted by mattcosa

found some info: but its wikipedia so how reliable it is who knows:

http://en.wikipedia.org/wiki/Ford_Boss_engine

If thats true,then in 2010 we'll be driving falcons with BOSS clevo's :evil3: :

[Eaturbo]

Why is it that GM thinks that only big cubes gives big power, The current boss with a twin screw blower is all that is needed, easy upgrades from XR8 to GT for FPV and plenty of scope for further development. The larger capacity just uses more fuel and this was seen in VZ when they went from 5.7 to 6L and was 7% worse on fuel. Its about time that Ford started to use Forced induction on its V8's and with the mirid of options ford has in the USA with pre tested motors ie GT500. In australia different boost, intercoolers etc etc would give ford several states of tune, and this would also address the lack of torque down low.

[Steffo]

Originally Posted by Eaturbo

Why is it that GM thinks that only big cubes gives big power, The current boss with a twin screw blower is all that is needed, easy upgrades from XR8 to GT for FPV and plenty of scope for further development. The larger capacity just uses more fuel and this was seen in VZ when they went from 5.7 to 6L and was 7% worse on fuel. Its about time that Ford started to use Forced induction on its V8's and with the mirid of options ford has in the USA with pre tested motors ie GT500. In australia different boost, intercoolers etc etc would give ford several states of tune, and this would also address the lack of torque down low.

They don't think that at all. Big cubes = big power, cheap and often reliably. Low revs, low stress engine. That's the idea anyway.

Corvette Z06... 377kW 7.0 V8 that peaks power at 6300rpm
Ferrari F430... 360kW 4.3 V8 that peaks power at 8500rpm

The Ferrari costs three times as much stateside. See what I mean?

[FPV]

FPV should be thinking about the competition. This engine will make it into the HSVs sooner or later, probably end of this year or in time for Orion. Also this LS3 engine will just line up in the base models, R8 and GTS. I'm sure a GTS-R will rear its head soon. Chrysler's SRT division are putting in a 6.4l engine with over 373kws into the SRT8s from next year according to some sources.

[futura]

Ford and FPV need to get serious about their v8 program if the V8 is going to survive in years to come. Sticking a GT Badge on the side of a falcon wont make it go faster than a HSV Clubsport. Ford had been relying heavy upon the history of the GT badge, in 2008 it will take much more than a GT badge to take up the battle to the HSV LS3 motor holdens. The new LS3 motors are coming! Ford Australia response???

[Cobra]

Originally Posted by futura

Ford and FPV need to get serious about their v8 program if the V8 is going to survive in years to come. Sticking a GT Badge on the side of a falcon wont make it go faster than a HSV Clubsport. Ford had been relying heavy upon the history of the GT badge, in 2008 it will take much more than a GT badge to take up the battle to the HSV LS3 motor holdens. The new LS3 motors are coming! Ford Australia response???

There is still hope for the BOSS to get it through till 2010 or whenever the new engine is supposed to be ready (providing we get it straight after the yanks release it). Think back to 2000 with the Cobra R. There has never been an engine so similar to that, as what we have here. All we need is more revs (yes yes and more power down low too) to make real use of the brilliant flowing heads we have.

If FPV could raid the FMS parts catalogue and use a few small parts, it could be the key to a world of difference. Namely the internals, conrods being the main one. The Cobra R could safely and reliably rev to it's 6800 redline all day every day. Most dynos I've seen of N/A bosses (esp 290s) show little sign of power tapering off at high rpm, so with some longer duration cams, and an extra 900rpm to play with, FPV could easily get an extra 30kw to stay competitive.

The Cobra R was rated at 390hp (287kw) at the flywheel. Independant dyno testing has shown anywhere between 350-370rwhp which indicates it makes well over 300 engine kw in our terms. And the performance times would confirm this with 0-60mph in 4.6 and 1/4 miles in 12.7 seconds in a car weighing 1622kg. Now, imagine that in an 1820kg GT, with prefferably a 3.73 diff ratio (come on Ford the V8s need this ratio more than the Turbos) it wouldn't take a brain surgeon to see that we'd have a genuine low 13 second car!

[Steffo]

Originally Posted by Cobra

The Cobra R was rated at 390hp (287kw) at the flywheel.

Just a *little* tidbit... lol...

Cobra R = 385hp 385ftlbs (287kW 522Nm)

03 Cobra 4.6 Supercharged = 390hp 390ftlbs (291kW 528Nm)

Boss 290 = 389hp 384ftlbs (and everyone knows 290kW 520Nm hehe).

The only truthful rating there is the Boss though. The 03 Cobra had more like 440hp with the numbers they put to the back wheels, and the Cobra R more like 430hp.