LS1 Based Engine Tech LS1 / LS6 / LS2 / LS3 / LS7 Engine Tech

LS6 block in some F bodies

Thread Tools
 
Search this Thread
 
Old Mar 2, 2003 | 10:39 PM
  #46  
JCSWS6's Avatar
Registered User
 
Joined: Aug 2001
Posts: 69
From: Washington Township, OH
I'm near St Louis, Scott AFB
Old Mar 2, 2003 | 10:47 PM
  #47  
stik6shift98's Avatar
Banned
 
Joined: Mar 2002
Posts: 4,254
From: Darien, IL, usa (Chicago W.Suburbs)
thats far...u guys have a lot of fbods down there too???
Old Mar 2, 2003 | 10:48 PM
  #48  
JCSWS6's Avatar
Registered User
 
Joined: Aug 2001
Posts: 69
From: Washington Township, OH
Oh yeah, tons of f-bodies in this area
Old Mar 2, 2003 | 11:39 PM
  #49  
NC Dude's Avatar
Registered User
 
Joined: Feb 2002
Posts: 55
From: N. Carolina
Originally posted by stik6shift98
how true is this ls6 block thing??????
Gents,

To clear a few things up,

Some 01 & 02 F-Bodies came from the factory with LS6 blocks.
The color of the block means nothing.
Some LS1 blocks have a bullseye and some don't.
Casting #12561168 is a 01-02 LS6 block.
GM list the LS1 and LS6 blocks as interchangable.
The LS6 is a bit thicker in critical areas.
The LS6 'windows' are actually larger holes in the top of the crank journals to flow more oil at higher RPMs'.

There is no performance advantage in having a LS6 block with LS1 internals.

A LS6 block in a F-body DOES NOT make a LS6 motor in a F-Body!

Enjoy your cars.
Old Mar 2, 2003 | 11:45 PM
  #50  
stik6shift98's Avatar
Banned
 
Joined: Mar 2002
Posts: 4,254
From: Darien, IL, usa (Chicago W.Suburbs)
i figured that an ls6 block doesnt make an ls6 engine...thanks...

but still its a plus to have ls6 block
Old Mar 3, 2003 | 12:13 AM
  #51  
NC Dude's Avatar
Registered User
 
Joined: Feb 2002
Posts: 55
From: N. Carolina
Originally posted by stik6shift98
i figured that an ls6 block doesnt make an ls6 engine...thanks...

but still its a plus to have ls6 block
While I realize a LS6 block in your F-body sounds cool, there really is no advantage to it from the factory.

However, there are LS1/LS6 conversion kits comming to the market that may be worth looking into.

Enjoy your cars.
Old Mar 3, 2003 | 08:20 AM
  #52  
stik6shift98's Avatar
Banned
 
Joined: Mar 2002
Posts: 4,254
From: Darien, IL, usa (Chicago W.Suburbs)
are the conversions going to buy expensive???
Old Mar 3, 2003 | 02:16 PM
  #53  
psychocabbage's Avatar
Registered User
 
Joined: Aug 2000
Posts: 1,901
From: Houston, Tx USA
Originally posted by NC Dude
Gents,

To clear a few things up,

Some 01 & 02 F-Bodies came from the factory with LS6 blocks.
The color of the block means nothing.
Some LS1 blocks have a bullseye and some don't.
Casting #12561168 is a 01-02 LS6 block.
GM list the LS1 and LS6 blocks as interchangable.
The LS6 is a bit thicker in critical areas.
The LS6 'windows' are actually larger holes in the top of the crank journals to flow more oil at higher RPMs'.

There is no performance advantage in having a LS6 block with LS1 internals.

A LS6 block in a F-body DOES NOT make a LS6 motor in a F-Body!

Enjoy your cars.
Ok, so now us that have looked for the bullseye have to look again... Says we need to look "A casting # 12561168 denotes LS6 block. The number is located on driver's side, at back of left hand deck above transmission flange. " So how do we do that?
Mirror? Jack the car up? Explain a simple procedure and it will be done this week.. heh
Old Mar 3, 2003 | 03:03 PM
  #54  
JaysZ's Avatar
Registered User
 
Joined: Oct 2002
Posts: 355
From: No Va.
Doh! There goes my 5 hp.
Old Mar 3, 2003 | 04:40 PM
  #55  
Gossco95's Avatar
Registered User
 
Joined: Jul 2002
Posts: 82
From: Nebraska
Another way to check to see if its a LS6 blah blah blah... take a look at the heads.....

LS1

Part numbers:

12559853 (1997-98)
12559853 (1999-00)
12564241 (2001-03)

LS6

Part numbers:

12564243

the heads will have the last three digits marked on the lower right of the heads

-sources GMHTP
Old Mar 4, 2003 | 07:03 AM
  #56  
NC Dude's Avatar
Registered User
 
Joined: Feb 2002
Posts: 55
From: N. Carolina
Originally posted by psychocabbage
Ok, so now us that have looked for the bullseye have to look again... Says we need to look "A casting # 12561168 denotes LS6 block. The number is located on driver's side, at back of left hand deck above transmission flange. " So how do we do that?
Mirror? Jack the car up? Explain a simple procedure and it will be done this week.. heh
Either jack it up or put it on a lift. Use a flashlight and a mirror with a telescoping handle.

Casting #12561168 is a LS6 block.
Old Mar 4, 2003 | 11:48 AM
  #57  
psychocabbage's Avatar
Registered User
 
Joined: Aug 2000
Posts: 1,901
From: Houston, Tx USA
Originally posted by Gossco95
Another way to check to see if its a LS6 blah blah blah... take a look at the heads.....

LS1

Part numbers:

12559853 (1997-98)
12559853 (1999-00)
12564241 (2001-03)

LS6

Part numbers:

12564243

the heads will have the last three digits marked on the lower right of the heads

-sources GMHTP
we arent saying we have an LS6 motor in there.. just that there is an LS6 Block in there.. nothing more... 01-02 had a few other LS6 parts.. But all we are saying in this message is that 10% of the 01 and 25% fo the 02 got an LS6 block instead of an LS1 block.. the rest is the same..
Old Mar 4, 2003 | 02:56 PM
  #58  
JaysZ's Avatar
Registered User
 
Joined: Oct 2002
Posts: 355
From: No Va.
Originally posted by psychocabbage
we arent saying we have an LS6 motor in there.. just that there is an LS6 Block in there.. nothing more...
That's right, I'm only claiming the LS6 block. Cool, get to keep my sig.
Old Mar 4, 2003 | 04:36 PM
  #59  
NC Dude's Avatar
Registered User
 
Joined: Feb 2002
Posts: 55
From: N. Carolina
Originally posted by JaysZ
That's right, I'm only claiming the LS6 block. Cool, get to keep my sig.
Gents,

A LS6 block in your F-Body might sound cool, but the blocks are interchangable per GM.

A LS6 block in a F-Body means NOTHING from the factory.

A factory LS1 Block can be modded to make very respectable Horsepower and Torque.

Enjoy your cars.
Old Mar 4, 2003 | 05:47 PM
  #60  
JasonD's Avatar
Admin Emeritus
 
Joined: Dec 1997
Posts: 11,157
From: Nashville, TN area
Check this out...

Go to:
http://www.chevrolet.com/corvette/gallery.htm
and scroll down and to the right there are some Quicktime videos. One is of the LS1 and one is of the LS6. In the LS6 one they talk about the block, among other things.

Just something I thought you guys may find interest in.



All times are GMT -5. The time now is 02:45 AM.