Offroad-Express

he actualy got taken home with the trailer, some one had to use his trailer so he was waiting and then they took him and his truck home with the trailer

bit of a thread jack but what did they change between the ls1 and the ls2?

rangimotors wrote:bit of a thread jack but what did they change between the ls1 and the ls2?

V8 Engines: LS2 vs LS1

By Chris Shumack - 5/Apr/2007

V8 Motors: LS2 vs LS1:
6.0-litres vs 5.7-litres

Melbourne, Australia — If you didn’t know the difference between an LS1 and LS2 engine apart from the badge and the GM fans lust for them, you’d be on the right track if you guessed that the LS2 it simply a revised Generation III block with Generation III heads.

While in most parts this is correct, and the revisions are small, they are numerous and make an amazing difference - improving power and torque, while improving fuel economy.

One of the main driving forces behind the LS2 design is fuel economy. A newly developed ‘Displacement on Demand Technology’ (DOD) is available for all Generation IV LS2 engines in the US, with it;s Australian debut still pending.

While it is not available just yet here in Australia, the displacement on demand is worked as simply a matter of programming in the ECM, and even though it isn't burnt into the memory of our Aussie versions, I’ve mentioned it because it’s operation requires intricate modifications to the LS1 engine block to function, and hence the LS2's reason for being.

The way it works is similar to other engine technologies as seen in Jeep's ‘Hemi’ engines. It shuts off 4 out of 8 cylinders when the ECM determines load is small enough on the engine for it to operate on half it’s normal power without damage or engine stall, and when throttle or engine load increases, the ECM will switch back to the full power of it’s 8 cylinders.

Support for the new technology has required oil channels and galleries throughout the block to be redesigned for correct lubrication of the internals switching between normal and DOD modes. Other revisions to the bottom end is a new oil pan – the design coming from the GM muscle camp Corvette, who in their C6 reshaped the pan itself and channels inside the pan to avoid oil starvation while lateral G’s are present, and keeps oil being distributed through the running engine during hard cornering.

As I mentioned before the heads are slightly modified LS1 Generation III heads – LS6 heads that is. They are modified by raising the intake ports and using unshrouded valves, which are driven by a high lift LS6 camshaft which in turn is driven by a strengthened timing chain.

The use of these heads enabled the increase of the bore size from 3.9-inches to 4-inches and increased compression – all combining to give the impressive figures that the LS2 boasts in the SS V Commodore 270kW and 530Nm. In fact, it has such high compression when compared to both it’s formers: the LS1 at 10.1:1, and LS6 at 10.5:1, it might leave a bit of a question mark next to whether or not forced induction has much headroom where the manifold pressures are concerned.

Forced induction fans need not worry too much about this, as the manifold has been upgraded to the LS6 manifold which have larger valves (2-inch exhaust, 1.55-inch intake) to aid with moving that fuel in, and the exhaust away more efficiently. The exhaust manifolds are bored out to give a wall thickness of 3mm instead of 4mm for extra flow and the pistons also have been updated to include a flatter top and lower tension piston rings for low friction and full floating wrist pins. This is rumoured to reduce ‘piston-slap’ noise but is most probably more geared towards the abovementioned DOD technology.

Throttle control has been moved from the cable driven system to a ‘drive-by-wire’ system that now takes input from the loud pedal and then controls the Electronic Throttle Control. This is advantageous because now the ECM can control the throttle directly via the ETC and hence there is no need for a cruise control throttle relaxer or an accelerator cable.

Smaller revisions include knock engine sensors that are now at the front of the engine rather than in the valley, and the PCV Valve is now in the valley instead of the rocker covers also. The water pump has been redesigned for weight and greater leakproofing and the ignition coil packs are of higher efficiency.

so basically the ls2 is mean as its whats in the new hsvs

skid wrote:

petefj40 wrote:

cool__bananas wrote:after the recovery challange he drove it ages down the road to the pub

and then drove it home........pissed.

he might have been the sober driver

and may I say,

what a cool taxi

cool is a under statement, i fricking froze!!!

cool__bananas wrote:so basically the ls2 is mean as its whats in the new hsvs

It's mean alright. But the LS2 has been around for a few years...
The new LS2 going in my Holden is going to be cable operated. None of that fly by wire crap. I'm still using the same LS2 manifold though. Brought a cable operated throttle body for it. A bit on the pricey side. But this way I don't need to get a new computer. It'll be getting fired up for the first time this week, on the dyno to run it in.

petefj40 wrote:

cool__bananas wrote:so basically the ls2 is mean as its whats in the new hsvs

It's mean alright. But the LS2 has been around for a few years...
The new LS2 going in my Holden is going to be cable operated. None of that fly by wire crap. I'm still using the same LS2 manifold though. Brought a cable operated throttle body for it. A bit on the pricey side. But this way I don't need to get a new computer. It'll be getting fired up for the first time this week, on the dyno to run it in.

what have i missed? which holden are ya putting it in?

rangimotors wrote:

petefj40 wrote:

cool__bananas wrote:so basically the ls2 is mean as its whats in the new hsvs

It's mean alright. But the LS2 has been around for a few years...
The new LS2 going in my Holden is going to be cable operated. None of that fly by wire crap. I'm still using the same LS2 manifold though. Brought a cable operated throttle body for it. A bit on the pricey side. But this way I don't need to get a new computer. It'll be getting fired up for the first time this week, on the dyno to run it in.

what have i missed? which holden are ya putting it in?

Sorry Dave.
Most people on here know I'm a Holden fan.
This is my other toy.
02 VX Clubby.

oh right aren't they meant to be 300kw? and the figures about for the ls2 270kw? what am i missing

rangimotors wrote:oh right aren't they meant to be 300kw? and the figures about for the ls2 270kw? what am i missing

It was powered with a worked LS1 (stock 255kw at engine). At the engine it was producing just over 300kw. It's now getting freshened up and thrown into my brothers Cobra hull jet boat. Looking forward to using THAT!
The new LS2 i brought in from Aussy. Comes with a stage 3 cam and worked heads. Hoping to get over 400kw at the engine. Stock they produce 305kw at the flywheel.

skid wrote:

petefj40 wrote:

Without getting a ticket.

yup

So any youtube of this beast? Or any other info skid?

shit pete! what do you do for a job???? ive got 2.5 years till i leave school so i have plenty of time to change subjects! i wana beable to have lots of chevs too!!!

cool__bananas wrote:shit pete! what do you do for a job???? ive got 2.5 years till i leave school so i have plenty of time to change subjects! i wana beable to have lots of chevs too!!!

I'm a high paid gigalo.

Nah. My trade is Printing. I operate printing machinery.
But hey bananas, I was kicked out a school in the 5th form. Bit of a bad boy. School was entertainment for me back then, not to mention, a great way to pickup chicks!
But don't listen to me. I'd never tell my kids how bad I was at school. Thankfully they aren't following my lead.

Do your best at school m8.

petefj40 wrote:

cool__bananas wrote:shit pete! what do you do for a job???? ive got 2.5 years till i leave school so i have plenty of time to change subjects! i wana beable to have lots of chevs too!!!

I'm a high paid gigalo.

Nah. My trade is Printing. I operate printing machinery.
But hey bananas, I was kicked out a school in the 5th form. Bit of a bad boy. School was entertainment for me back then, not to mention, a great way to pickup chicks!
But don't listen to me. I'd never tell my kids how bad I was at school. Thankfully they aren't following my lead.

Do your best at school m8.

printing money it looks like

petefj40 wrote:My trade is Printing. I operate printing machinery.

In other words you are an office bitch that runs a photo copy macine

PR wrote:

petefj40 wrote:My trade is Printing. I operate printing machinery.

In other words you are an office bitch that runs a photo copy macine

mate, if it meant i could have toys like that (but with ford badges) i would quite happily be an office bitch lol....

but somehow i think his job will be a little more technical than operating a photocopier...

PR wrote:

petefj40 wrote:My trade is Printing. I operate printing machinery.

In other words you are an office bitch that runs a photo copy macine

It's a bit harder than that PR. But not as easy as driving a taxi. And pays more.

..

bloody holdens...... (oh crap thats right, i own one too now!!!!)

The 350 is proving to be more economical than the 4l in the Jeep as expected. It sounds way cooler too. and goes a might faster..... pretty ratshit in the mud though!

was just about to go out and run down some boy racers

xj wrote:bloody holdens...... (oh crap thats right, i own one too now!!!!)

The 350 is proving to be more economical than the 4l in the Jeep as expected. It sounds way cooler too. and goes a might faster..... pretty ratshit in the mud though!

was just about to go out and run down some boy racers

The 350? Is it injected? Not to good in the mud? Huh??

petefj40 wrote:

xj wrote:bloody holdens...... (oh crap thats right, i own one too now!!!!)

The 350 is proving to be more economical than the 4l in the Jeep as expected. It sounds way cooler too. and goes a might faster..... pretty ratshit in the mud though!

was just about to go out and run down some boy racers

The 350? Is it injected? Not to good in the mud? Huh??

his holden is only used like yours pete.............

on the street

he bought a crummydore for the missus

skid wrote:

petefj40 wrote:

xj wrote:bloody holdens...... (oh crap thats right, i own one too now!!!!)

The 350 is proving to be more economical than the 4l in the Jeep as expected. It sounds way cooler too. and goes a might faster..... pretty ratshit in the mud though!

was just about to go out and run down some boy racers

The 350? Is it injected? Not to good in the mud? Huh??

his holden is only used like yours pete.............

on the street

he bought a crummydore for the missus

I wouldn't use my Holden Clubsport for anything else than the street skid.
N the Chev powered 40 does get dirty once in a blue moon.

But jokes aside. It was really built to tow, and to start with tow only. I didn't want to use the Clubby for towing.
Since the 40's been built I've been nutty enough to at least take out in the mud. Nutty coz I've had little to no experience off roading.

But hey. Shoot me down brother.

petefj40 wrote:But hey. Shoot me down brother.

we're all trying hard dude

skid wrote:

petefj40 wrote:But hey. Shoot me down brother.

we're all trying hard dude

Yeah I know..
I ask for it... On here, I'm a smart ass, arrogant etc. So it's all good. I dish it, so i can take it.

I'm thinking of giving this site a break n jst jumping on when an event is coming up I might want to enter or something.
There's been one person who's jumped on this site that is making the place a bit crowded for me.
It's been good though. I've had fun..

Its the gen 2 (or heck is it gen III, hell its a holden, i dunno) that was popped into the VT's in 2000. All i really know about it is that it goes like a raped ape (no headers, but thankfully someone ripped out the cat!) and has more than enough to get the wife into strife with John Q Law!
She really needs to get her full licence!

xj wrote:Its the gen 2 (or heck is it gen III, hell its a holden, i dunno) that was popped into the VT's in 2000. All i really know about it is that it goes like a raped ape (no headers, but thankfully someone ripped out the cat!) and has more than enough to get the wife into strife with John Q Law!
She really needs to get her full licence!

go see ProTune up in auckland they can fix you up with some good deals for the LS1 you got!! i went there spent about $2400 and came out with nearly another hundred kilowatts on top of the standard 225kw. Get some nice headers and twin exhaust, ignition programing remapped, dyno tune, and you should get some very good economy from that. My little trip computer reckons 650kms to empty when i just filled the tank, on the open road i have had 800kms to empty showing. the autos may be a little less, but those motors can be reasonably economic, and you have fun along the way

i think 446Nm of torque will be enough!