Some f-cars may have an ls6 block
04-22-2003, 01:22 PM
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Some f-cars may have an ls6 block I just got my GMHTP mag in and there's an article on page 11 that says some of the camaro and firebird/transam guys may be running around with an ls6 block.
In 98 GM used two providers for the ls1 block. Montupet in Canada and Nemak in Mexico. Montupet uses gravity-feed process and uses a combo of metallic dies and sand cores. Nemak uses low-pressure fan process, which is more of a hi performance process.
Then in 01 GM needed to redesign the ls1 to be a stronger ls6. Since Nemak's materials are stronger they went with them.
But still had Montupet provide ls1 blocks.
During the redesign so many were made that GM allowed some blocks to spill over into f-bodies. It is said that 10-15 percent of all 2001 f-cars and around 25percent of 02 f-cars are running around with ls6 blocks.
To confirm: look behind the drivers-side and see if you can see the back of the left-hand deck, above the transmission flange.
A cast-in 12561168 denotes the LS6 block.
A harder way to tell is, the Montuupet plant cast is shinier, the Nemak plant made duller, stronger block castings. I know that's hard to tell, but it's what the magazine says.
Starting in 03 all ls1/ls6 blocks will be of this newer Nemak configuration.
BTW, the ls6 block ventilates 87% more than the ls1, which is less pumping loss at high rpm. No official hp claims have been made, but it does increase hp.
later,
allen
(ls6 block )
<small>[ April 22, 2003, 02:06 PM: Message edited by: FarmTruc ]</small>
In 98 GM used two providers for the ls1 block. Montupet in Canada and Nemak in Mexico. Montupet uses gravity-feed process and uses a combo of metallic dies and sand cores. Nemak uses low-pressure fan process, which is more of a hi performance process.
Then in 01 GM needed to redesign the ls1 to be a stronger ls6. Since Nemak's materials are stronger they went with them.
But still had Montupet provide ls1 blocks.
During the redesign so many were made that GM allowed some blocks to spill over into f-bodies. It is said that 10-15 percent of all 2001 f-cars and around 25percent of 02 f-cars are running around with ls6 blocks.
To confirm: look behind the drivers-side and see if you can see the back of the left-hand deck, above the transmission flange.
A cast-in 12561168 denotes the LS6 block.
A harder way to tell is, the Montuupet plant cast is shinier, the Nemak plant made duller, stronger block castings. I know that's hard to tell, but it's what the magazine says.
Starting in 03 all ls1/ls6 blocks will be of this newer Nemak configuration.
BTW, the ls6 block ventilates 87% more than the ls1, which is less pumping loss at high rpm. No official hp claims have been made, but it does increase hp.
later,
allen
(ls6 block )
<small>[ April 22, 2003, 02:06 PM: Message edited by: FarmTruc ]</small>
04-22-2003, 01:37 PM
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Re: Some f-cars may have an ls6 block I think <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> 2001+ have the LS6 cam and intake or a version of the LS6 cam anyway.
04-22-2003, 02:25 PM
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Re: Some f-cars may have an ls6 block No, the only thing the '01-'02 LS1 fbodys have is the LS6 intake. I have heard this rumor about some getting an LS6 block, but nothing more.
04-22-2003, 02:39 PM
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Re: Some f-cars may have an ls6 block I know that 01 and 02 have LS6 intakes but that's it.....as far as LS6 blocks.... <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
04-22-2003, 05:55 PM
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Re: Some f-cars may have an ls6 block </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SiggyBaby:
<strong> No, the only thing the '01-'02 LS1 fbodys have is the LS6 intake. I have heard this rumor about some getting an LS6 block, but nothing more. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">And the Z06 clutch and a few other small/trivail Z06 parts I believe
<strong> No, the only thing the '01-'02 LS1 fbodys have is the LS6 intake. I have heard this rumor about some getting an LS6 block, but nothing more. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">And the Z06 clutch and a few other small/trivail Z06 parts I believe
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04-22-2003, 08:20 PM
#9
Re: Some f-cars may have an ls6 block The 2001 and 2002 Fbodys also have the same cam as the 2001-2003 vettes. Not Z06s though.
Cam specs
2001-2002 Fbody
.479/.467- valve lift
207/196- duration
116 LSA
117/115- timing
The LS6 car has
2001- .525/.525- lift
211/204- duration
116 LSA
114/118- timing
2002-2003 LS6
.551/.555- lift
218/204- duration
117.5 LSA
115/120- timing
Hope this helps.
Cam specs
2001-2002 Fbody
.479/.467- valve lift
207/196- duration
116 LSA
117/115- timing
The LS6 car has
2001- .525/.525- lift
211/204- duration
116 LSA
114/118- timing
2002-2003 LS6
.551/.555- lift
218/204- duration
117.5 LSA
115/120- timing
Hope this helps.
04-22-2003, 10:34 PM
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Re: Some f-cars may have an ls6 block We knew some 2001 had the LS6 block, but didn't know how to find out what we had. After we read the artical today we tried to find those numbers. We went out armed with a flashlight and a mirrow but no use, we couldn't find it. Does anyone know an easier way to do this? Directions with pictures might be helpful. lol
04-22-2003, 10:44 PM
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Re: Some f-cars may have an ls6 block oh gawd, not this again. I wish people wouldn't post as if the have found the fountain of youth or something when they run across this. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />
04-22-2003, 10:57 PM
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Re: Some f-cars may have an ls6 block Yea, and I think High Performance Pontiac had it in print about two months ago. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
04-22-2003, 11:00 PM
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Re: Some f-cars may have an ls6 block </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Lady Redhawk:
<strong> We knew some 2001 had the LS6 block, but didn't know how to find out what we had. After we read the artical today we tried to find those numbers. We went out armed with a flashlight and a mirrow but no use, we couldn't find it. Does anyone know an easier way to do this? Directions with pictures might be helpful. lol </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ummm, yea, you must've glanced over this part of the article... <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">A harder way to tell is, the Montuupet plant cast is shinier, the Nemak plant made duller, stronger block castings. I know that's hard to tell, but it's what the magazine says.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
<small>[ April 22, 2003, 11:01 PM: Message edited by: CMNTMXR57 ]</small>
<strong> We knew some 2001 had the LS6 block, but didn't know how to find out what we had. After we read the artical today we tried to find those numbers. We went out armed with a flashlight and a mirrow but no use, we couldn't find it. Does anyone know an easier way to do this? Directions with pictures might be helpful. lol </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ummm, yea, you must've glanced over this part of the article... <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">A harder way to tell is, the Montuupet plant cast is shinier, the Nemak plant made duller, stronger block castings. I know that's hard to tell, but it's what the magazine says.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
<small>[ April 22, 2003, 11:01 PM: Message edited by: CMNTMXR57 ]</small>
04-22-2003, 11:08 PM
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Re: Some f-cars may have an ls6 block I read that article as well, I'm going to take a look at the # as soon as my motor comes out...
I'm too lazy to stick a mirror in the back w/a flashlight....
<img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />
I'm too lazy to stick a mirror in the back w/a flashlight....
<img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />
04-22-2003, 11:22 PM
#15
Re: Some f-cars may have an ls6 block This was posted and gone into in great detail 4-5 months ago here is a link to a thread showing how to tell without pulling your engine or using a mirror. I have the ls6 in my 2002 <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
https://ls1tech.com/ubb/ultimatebb.p...=010045#000030
https://ls1tech.com/ubb/ultimatebb.p...=010045#000030
04-23-2003, 08:23 AM
#16
Re: Some f-cars may have an ls6 block Actually 10-15% of all 2001 f bodys have the LS6 block. And 25% of all the 2002 F cars have the LS6 block. To check to see if yours is an LS6, look for casting number 12561168 on the left hand deck above the transmission flange. You can also tell by the block's luster. The LS1 has a shinier block, while the Nemak block is duller
04-23-2003, 09:32 AM
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Re: Some f-cars may have an ls6 block </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BAD *** TA WS6:
<strong> Actually 10-15% of all 2001 f bodys have the LS6 block. And 25% of all the 2002 F cars have the LS6 block. To check to see if yours is an LS6, look for casting number 12561168 on the left hand deck above the transmission flange. You can also tell by the block's luster. The LS1 has a shinier block, while the Nemak block is duller </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Except for the percentages you posted, everything else is a repeat of what was posted originally above from GMHTP, which was a repeat of what was in HPP two months prior, etc, etc........
Anyone else want to tell everyone to look on the left hand deck above the transmission flange for Casting # 12561168?
<strong> Actually 10-15% of all 2001 f bodys have the LS6 block. And 25% of all the 2002 F cars have the LS6 block. To check to see if yours is an LS6, look for casting number 12561168 on the left hand deck above the transmission flange. You can also tell by the block's luster. The LS1 has a shinier block, while the Nemak block is duller </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Except for the percentages you posted, everything else is a repeat of what was posted originally above from GMHTP, which was a repeat of what was in HPP two months prior, etc, etc........
Anyone else want to tell everyone to look on the left hand deck above the transmission flange for Casting # 12561168?
04-23-2003, 01:12 PM
#18
Re: Some f-cars may have an ls6 block "Except for the percentages you posted, everything else is a repeat of what was posted originally above from GMHTP, which was a repeat of what was in HPP two months prior, etc, etc........
Anyone else want to tell everyone to look on the left hand deck above the transmission flange for Casting # 12561168?"
That's nice <img border="0" alt="[punch]" title="" src="graemlins/gr_punch.gif" /> , I have a subscription to both magazines and was trying to help with the confusion. Shut your mouth, I don't give a damn about your attitude or what you have to say. <img src="http://www.fuelslut.com/forum/images/smiles/finger.gif" alt=" - " />
<small>[ April 23, 2003, 07:30 PM: Message edited by: BAD *** TA WS6 ]</small>
Anyone else want to tell everyone to look on the left hand deck above the transmission flange for Casting # 12561168?"
That's nice <img border="0" alt="[punch]" title="" src="graemlins/gr_punch.gif" /> , I have a subscription to both magazines and was trying to help with the confusion. Shut your mouth, I don't give a damn about your attitude or what you have to say. <img src="http://www.fuelslut.com/forum/images/smiles/finger.gif" alt=" - " />
<small>[ April 23, 2003, 07:30 PM: Message edited by: BAD *** TA WS6 ]</small>
04-24-2003, 06:15 AM
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Re: Some f-cars may have an ls6 block Well, if you'd have READ the thread before just posting, you'd have seen the info posted several times.
Or did they not teach you "Reading 101" at your local community college?
So <img src="http://www.fuelslut.com/forum/images/smiles/finger.gif" alt=" - " /> right back at you!
Or did they not teach you "Reading 101" at your local community college?
So <img src="http://www.fuelslut.com/forum/images/smiles/finger.gif" alt=" - " /> right back at you!
04-24-2003, 06:24 AM
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Re: Some f-cars may have an ls6 block When I called Pace for my head gaskets, they were able to tell from my VIN Number. No, I didn't have the LS6 block...