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#1 _lx-304_

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Posted 13 July 2008 - 08:50 AM

i am now looking for an ls1 and have been told to get one out of a late vx or vy,as the earlier one had a knock or somehting like that.does anyone have an engine prefix so i can check,rather than be told it is out of a ?????

#2 yel327

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Posted 13 July 2008 - 09:27 AM

AFAIK they are all VF prefix, even the 300kW HSV engines.

#3 _rorym_

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Posted 13 July 2008 - 10:43 AM

Get a late VY /VZ if you can..mine was one of the last VYs and it had an LS2 in it..ther are all VF...very early ones needed rebuilds as they chewed oil by the gallons on some...Later one the better. Google LS1/2 or look on the LS1 forum...there was an article on how to tell the difference from LS1 to LS2.
R

Edited by rorym, 13 July 2008 - 10:45 AM.


#4 LS1LX

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Posted 13 July 2008 - 01:28 PM

Get a late VY /VZ if you can..mine was one of the last VYs and it had an LS2 in it..ther are all VF...very early ones needed rebuilds as they chewed oil by the gallons on some...Later one the better. Google LS1/2 or look on the LS1 forum...there was an article on how to tell the difference from LS1 to LS2.
R

LS2 is 6 litre, was it a HSV rory?

There all good from 2000 onwards, the early VT ones had the standard LS1 manifold and love to make some noise.

Whether its now or in 5 years time your going to be rebuilding it, so just buy a core and build it up now and it will go forever.

There too easy to make power in standard form, then you start pushing them and after a little while your luck runs out. Boom it goes and out comes the cheque book.

#5 _rorym_

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Posted 13 July 2008 - 01:52 PM

They ran out of LS1s at the end of VY production...so the last batch were 5.7 LS2s..I didnt believe it either but then and checked mine and bugger me..there it was..an LS2...info on LS1 forums..
R

#6 LS1LX

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Posted 14 July 2008 - 07:05 AM

They ran out of LS1s at the end of VY production...so the last batch were 5.7 LS2s..I didnt believe it either but then and checked mine and bugger me..there it was..an LS2...info on LS1 forums..
R

I think you mean LS6, they ran out of LS1's and some got the complete LS6, same as the other LS1's but different head/camshaft.

The LS2 is/was a 6L.

#7 _rorym_

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Posted 14 July 2008 - 10:44 AM

Stand corrected...LS1LX is correct...It was an LS6 not LS2.
R

#8 yel327

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Posted 14 July 2008 - 10:47 AM

I have an 11/2002 V2 CV8, a 5/2005 Cross 8 and had a new 5/2003 VY SS ute and all those engines were fine. Never hardly use/used a drop of Mobil 1 10W-30 every 10,000kM. I check the oil every 2000kM and no matter how they are/were driven none of them ever needed a drop. The V2 CV8 has a lot more grunt than any of them for some reason, and it's a auto. All are/were dead stock and not touched.

#9 micklx

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Posted 14 July 2008 - 08:27 PM

Something to be aware of if buying an L76 which was in late VZ's. There's nothing wrong with them as an engine but they are more complicated inside due to having the hardware installed for DOD (which was never used), some of the lifters are different (and more expensive), not sure whats interchangeable with the LS1 or L98 but given the choice, i would prefer the L98 or LS1/LS2 (HSV).

#10 Dr Terry

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Posted 14 July 2008 - 09:40 PM

Stand corrected...LS1LX is correct...It was an LS6 not LS2.
R

rory, are you saying your late VY had an LS6 engine, not an LS1 ?

How did you ID it ?

Dr Terry

#11 _rorym_

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Posted 15 July 2008 - 07:02 AM

Yeah Terry the last VYs did...I asked on the LS1 website...I remember I had to get a mirror down behind the passenger at the back of the head...cant remember exactly what I was supposed to look for but it was definately one...I didnt know anything about it until someone from LS1 asked me to have a look.
R

#12 _rorym_

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Posted 15 July 2008 - 07:14 AM

Here tis....was the casting number at the rear of the block I was looking for.Which explains why that black VY SV8 of mine was a jet!
R
LS6

GM LS6 engine in a Chevrolet Corvette Z06LS6 can also refer to a 454 in� Chevrolet Big-Block engine of the 1970s
The LS6 is a higher-output version of GM's LS1 engine. It is an all-aluminum 5.7 L (346 in�) pushrod engine. The initial 2001 LS6 produced 385 hp (287 kW) and 385 ft�lbf (522 N�m), but the engine was modified for 2002 through 2004 to produce 405 hp (302 kW) and 400 ft�lbf (542 N�m) of torque. The LS6 was originally only used in the high-performance C5 Corvette Z06 model, with the Cadillac CTS V-Series getting the 400 hp engine later. The V-Series used the LS6 for two years before being replaced by the LS2 in 2006. For 2006, the Z06 replaced the LS6 with the new 7.0L LS7.

The LS6 shares its basic block architecture with the GM LS1 engine, but other changes were made to the design such as windows cast into the block between cylinders, improved main web strength and bay to bay breathing, an intake manifold and MAF-sensor with higher flow, a camshaft with higher lift and more duration, a higher compression ratio and a revised oiling system better suited to high lateral acceleration. [1]

The casting number, located on the top rear edge of the block, is 12561168.

Applications:

2001-2004 Chevrolet Corvette C5 Z06
2004-2005 Cadillac CTS V-Series

Edited by rorym, 15 July 2008 - 07:15 AM.


#13 Dr Terry

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Posted 15 July 2008 - 08:27 AM

Hi Guys.

rory, if the last of the VYs had LS6s, then 2004 & 2005 (non-HSV) VZs must have had them as well, prior to the L76 in 2006.

Does anyone have any documentary evidence of this.

Dr Terry

#14 _rorym_

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Posted 15 July 2008 - 08:48 AM

No idea...Look pass side rear of block...you will need a mirror...number ends in 1168.
R

#15 yel327

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Posted 15 July 2008 - 04:21 PM

My 5/2005 VZ Cross8 has 12561168 cast in the block. BODY plate says LS1, but I had also heard of these having LS6 engines.

Just read on the LS1 forum that Holden "LS6" engines are not proper LS6. They got the block and intake but LS1 heads and cam and tune. This is a cut and paste off the site:


Bolt a set of LS6 head assemblies and cam on your VYII or SIII Monaro and you have an LS6 less the PCM tune which only requires tweaking on the rev limit anyhow. They already have the block and intake. The only real difference is complete LS6s came from the US - I think the 'Vette plant and not Canada - and the LS6 block casting has better windage between cylinders to reduce pumping losses. It is also seems more stable in the bore alignment which is why GM adopted it, partly to reduce the oiling problems.

Edited by yel327, 15 July 2008 - 04:31 PM.


#16 _rorym_

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Posted 15 July 2008 - 04:46 PM

Yel...
Check your heads..mine had the LS6 ones on them....I understood they just sent them in as complete crate engines to finish VY production. Everyone that drove mine who owned an LS1 commented on how quick it was...I thought it was just me..It was a great car..Pallbag should have bought it! :huh:
R

#17 LS1LX

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Posted 15 July 2008 - 05:21 PM

All VX onwards LS1's came with the LS6 manifold standard, GM just started building them with the same manifold instead of 2 different ones.

The the later ones they started sharing the same LS6 block instead of 2 different blocks.

In the VY they couldnt keep up with demand, thats how some ended up with a complete LS6 engine with the '243 LS6 heads.

The stock LS2 is pretty much an LS6 engine minus sodium filled valves and its 0.3L larger capacity.

#18 yel327

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Posted 15 July 2008 - 05:31 PM

Heads are 241.

#19 _rorym_

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Posted 15 July 2008 - 05:33 PM

In the VY they couldnt keep up with demand, thats how some ended up with a complete LS6 engine with the '243 LS6 heads.

Thats the number ...so YEL..check for the number on the heaqds heads and PM LS1....if so..you have a complete LS6..Bonus!
R

Edited by rorym, 15 July 2008 - 05:34 PM.


#20 _rorym_

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Posted 15 July 2008 - 05:41 PM

Try this

http://www.carcraft....eads/index.html

R

#21 _rorym_

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Posted 15 July 2008 - 05:45 PM

At nearly half the weight of an iron engine..my next project might be an LS6 in and LX hatch replica...that would be fun!
R

#22 _pallbag_

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Posted 15 July 2008 - 06:24 PM

..Pallbag should have bought it! :huh:
R

I prob should have Rory - BUT now I got a red SV8 with black go fast stickers on it!!

So going by "popular opinion", I now own one of the fastest of all torana's ever known to mankind and a red SV8 that aint that far behind it (not)... :spoton:

#23 _rorym_

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Posted 15 July 2008 - 06:48 PM

Plus its got a "wireless" in it too! :spoton:
R

#24 yel327

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Posted 15 July 2008 - 07:03 PM


In the VY they couldnt keep up with demand, thats how some ended up with a complete LS6 engine with the '243 LS6 heads.

Thats the number ...so YEL..check for the number on the heaqds heads and PM LS1....if so..you have a complete LS6..Bonus!
R

241, not 243. Just LS1 heads on LS6 bottom end. Truck configuration.

#25 _rorym_

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Posted 15 July 2008 - 08:32 PM

Wasnt that the L76 configeration?
R




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