ProTour69

Can anyone tell me the location of the vin number on a late model LS1 I looked and was only able to come up with a partial vin of 9 letters, is this all these engines come with?'(I just reread the post and its a little onfusing all I have is the engine and tranny...I'm looking for a vin on those_

Thanks in advance,
Ralph

<small>[ March 09, 2003, 03:17 PM: Message edited by: ProTour69 ]</small>

LS1swap

I just replied to that in that other ls1 forum..... <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> The ls1 engine only has a derivative vin on it. Here is a copy of the post


Actually you can tell the exact car the engine came out of. It is called a derivative vin. the first digit signifies 1 for chev 2 for pontiac. The second digit is the model year v for 97 w for 98 x for 99 y for 2000 and z for 2001( I am not sue what they did after that) the third digit is the assembly plant 2 for St. Therese ( where all f- bodies were built) I think y bodies are built in Detroit or bowling green. ( correct me if I am wrong). Bowleen green is 5 I don't know what Detroit is.. Digits 4-9 are plant sequence.
So if the third digit is 2. it is definitely out of an f-body the number is laser inscribed on the flange where the engine mounts to the trans on the drivers side. This is what they mean by numbers matching if the last 4-9 of the derivative vin match digits 12-17 of your actual vin it is numbers matching. Good luck in your search
here are some casting number ( located just under drivers side head)
12550592...350...97-up...crossbolted block, Gen.III, "LS1", aluminum
12559378...350...99-up...crossbolted block, Gen.III, "LS1", aluminum
12559846...350...98-up...crossbolted block, Gen.III, "LS1", aluminum
12560621...350...98-up...crossbolted block, Gen.III, "LS1", aluminum
12560629...350...99......crossbolted block, Gen.III, "LS1", aluminum
12561168...350...01-up...crossbolted block, Gen.III, "LS1", aluminum
12562174...350...98-up...crossbolted block, Gen.III, "LS1", aluminum
I can explain how to decode a vin I will use mine as an example. The regular vin goes as follows.
2G1FP22G0W2132624
Digit sequence
1 country of origin 1 for us 2 for Canada ( all f-bodies)
2 manufacture G for GM ( all f or y bodies) ( y bodies are vettes)
3 division 1 for chevy 2 for pontiac
4-5 car line series YY for vettes and fp for camaro and fierbirds
6 Body style 2 for two door hatch 3 for convertible
7 restraint system 2 for drivers and passenger air bags ( all vetts and f bodies)
8 engine G for 5.7
9 check digit just insert a 0
10 model year v for 97 w for 98 x for 99 y for 2000 z for 2001
11 assembly plant 2 for all f-bodies 5 for y-bodies ( I think)
12-17 plant sequence
Derivative vin
1 position 3 of actual vin ( division)
2 position 10 of actual vin (model year)
3 position 11 of actual vin (assembly plant)
4-9 position 12-17 of actual vin ( plant sequence)

My derivative vin was 1 (so I knew it was a chevy) ( if it would have been 2 it would have been a pontiac) the second digit was W so I knew it was a 98. The third digit was 2 so I knew it was built in St. Therese Canada, and digits 4-9 were plant sequence.

So knowing that my actual vin would be
2 because I know it was built in St. Therese Canada
G because I know it is GM
1 because my first digit derivative vin told me so
FP because mine was out of an f-body once again because I know it was manufactured in St. Therese where all f- bodies are
2 because I guessed it was out of a hard top and not a convertible which would have been 3 instead
G because I know it is a 5.7 V8
0 Check digit ( I was told it is almost always 0)
W because my derivative vin told me it was a 98
2 because my derivative vin told me it was
132624 also because my derivative vin told me so

So it had to be 2G1FP22G0W2132624 if it was a hard top
Or 2G1FP32G0W2132624 if it was a convertible
Not too complicated LOL

Erik Norway

Great Post with the VIN decode.

But I still can`t figure out my engine.

It says 1999 stamped in and 122550592FB.
Ques that means 97-up LS1 aluminium.

But the this number: W7S1G095AB
I think it is the VIN but way to short compared to yours.

Can anyone help me decode it?
Always fun to know what car my engine somes from.

Btw the engine is going in to my custome Vega Wagon with a T56 it has a Jaguar XJ6 rear end and loads of mods body and chassi.
It is a road car used on track days and is currently as fast as a M3 at the track days.

For pictures look here http://www.v8monza.com/album/vega-wagon.htm#Topofpage

Hope you can help me.

Erik
In Oslo of Norway

66ImpalaLT1

If you have the original pcm you can pull the vin from it.

Eric

Erik Norway

Hey that was quick <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Sorry don`t have the PCM to it...

Working on what I should go for now stock GM or wait for Accel DFI to come up with their new DFI for the LS1.

Erik
Oslo in Norway

LS1swap

Where is W7S1G095AB stamped???? The number I am talking about is on the drivers side above the oil filter on the side of the flange where it connects to the trans. the are allot of numbers stamped on the blocks. 99 was the first year of the center bolted valve cover and the last year of the tubular stainless manifolds. Those are parts that anyone could switch, but might give you some clues. y-body engines don't have provisions for an EGR, and the cover above the oil filter is tapped for a temp sender. On the f-body it is not. Your engine will have a derivative vin where I mention. It can be hard to read

Erik Norway

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1swap:
<strong> Where is W7S1G095AB stamped???? The number I am talking about is on the drivers side above the oil filter on the side of the flange where it connects to the trans. the are allot of numbers stamped on the blocks. 99 was the first year of the center bolted valve cover and the last year of the tubular stainless manifolds. Those are parts that anyone could switch, but might give you some clues. y-body engines don't have provisions for an EGR, and the cover above the oil filter is tapped for a temp sender. On the f-body it is not. Your engine will have a derivative vin where I mention. It can be hard to read </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hello and thanks for the help.

It is stampd on were you describe it just rear of and below were the drivers side cylinder head is bolted.
The number is also repeated on the cylinder heads.

I can E mail you a picture if you like?

The valve covers do not have center bolts so i`t would make it a 98 probably molted in a car at a factory in 99 since it is staped 1999.
Or what do you think?

Exhaust manifolds I do not have on it.

Since I only have one fuel line in on the fuel rails and a F-body oil tray I think it is a F body.

It would be fun to find out for sure and also easier to buy timing chain, bolt etc for.

I heard there is a difference on 98 and 99 is ther?
If so what?

Thanks for helping out
Erik
In Oslo of Norway

LS1swap

Hmmm I am not sure.... You got me puzzled. Maybe they do the derivative VIN differently in different years. I am going by the documentation in my 98 Helms manual. I am sure there are allot of people more knowledgeable than me on the differences in years. The main difference between 98 and 99 on is the style of the head. I don't know whether some 99 got the perimeter bolt valve cover as well. I am guessing you have a casting number of 908 on the head above the temp sender. The 98 is kind of the odd ball with f-bodies the PCM is different, the injectors were bigger, the coil packs mounted directly to the valve cover, and not to a bracket. the harness is different ( because the pin out on the PCM are different). I shouldn't say this because I don't know for a fact but I remember reading once that the cam and crank reluctor wheels are different, but don't quote me on that for it is just something I read online LOL. Most parts are the same no matter which year you have. Heck even LS6 parts will fit. Which head gasket to use is one of the few things where year or casting matters. Is the water pump still on? On 98's the pulley is bolted on. On 99 + it is non removable. 98's also used a felt gasket on the pump instead of the newer steel and silicone. (you can use the newer style when and if you need to replace it). It is kind of important that you figure what year you have because you say you don't have the PCM. A 98 PCM won't work with a 99 + harness or vise versa. 97 and 98 blocks have thinner cylinder sleeves. I am sure there is other stuff I am forgetting.

Erik Norway

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1swap:
<strong> Hmmm I am not sure.... You got me puzzled. Maybe they do the derivative VIN differently in different years. I am going by the documentation in my 98 Helms manual. I am sure there are allot of people more knowledgeable than me on the differences in years. The main difference between 98 and 99 on is the style of the head. I don't know whether some 99 got the perimeter bolt valve cover as well. I am guessing you have a casting number of 908 on the head above the temp sender. The 98 is kind of the odd ball with f-bodies the PCM is different, the injectors were bigger, the coil packs mounted directly to the valve cover, and not to a bracket. the harness is different ( because the pin out on the PCM are different). I shouldn't say this because I don't know for a fact but I remember reading once that the cam and crank reluctor wheels are different, but don't quote me on that for it is just something I read online LOL. Most parts are the same no matter which year you have. Heck even LS6 parts will fit. Which head gasket to use is one of the few things where year or casting matters. Is the water pump still on? On 98's the pulley is bolted on. On 99 + it is non removable. 98's also used a felt gasket on the pump instead of the newer steel and silicone. (you can use the newer style when and if you need to replace it). It is kind of important that you figure what year you have because you say you don't have the PCM. A 98 PCM won't work with a 99 + harness or vise versa. 97 and 98 blocks have thinner cylinder sleeves. I am sure there is other stuff I am forgetting. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What is the difference between the heads?

Sure the 98 have bigger injectors?
Because Howell Engine development says they can make a harness w/99 ECU and 99-00 SLP MAF (I am missig MAF)and it will fit on the 98 and 99 engine.
But if the injectors are different the engine will run to ritch.

Yepp coil packs are bolted directly to the valve covers.

Yepp water pump is ther but missig a pully.
There is a lose pully with 4 bolt holes but the flat pylly part is missing.
Also ther is no way I can see how the pully bolts to the water pump cause the axel is just sticking out no threds no bolt holes no nothing.

So they also hase thinner cylinder sleves hmm not good.

Thanks a lot for helping out.

Erik
Oslo of Norway

LS1swap

The difference in the heads are the valve covers, and the deck is a little different. Therefor 97 & 98 use different gaskets. I will look for the thread that goes into that

Positive the 98 had the bigger injector 26 or 28 LB/hr I can't remember. The front O2's are going to prevent it from running rich and determines how long the PCM fires the injectors.

I will e-mail you a picture of my water pump, because you have me totally confused on that LOL

The sleeves are not that much thinner... Just a little

I will also send a pic of where my derivative VIN is because everything you say points to a 98. Could it be something to do with being produced for export???? Norway and all

here is the link about the heads and gaskets
https://ls1tech.com/ubb/cgi-bin/ulti...c;f=1;t=006529

<small>[ March 14, 2003, 06:13 PM: Message edited by: LS1swap ]</small>

Erik Norway

Hey thanks for the greate info on head gasket <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I will check it up the comming week end.

You say front O2 sensors? do all LS1 have both befor and afther cats o2 sensors?
I am planinng to run it with no cats hope it does not make a problem.

Have you E-mailed me (easkjem@hotmail.com)? I have not recived any mail so if you have please try aigain.

Nope because the motor is imported from US loose from a wreck but not by me.

Thanks for helping out.

Just ordered a T56 from US with loads of the missing parts I need.

Best Regards
Erik
Oslo in Norway

LS1swap

Did you get the E-mail with the pictures????

Erik Norway

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1swap:
<strong> Did you get the E-mail with the pictures???? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yepp sure did thanks for your help.

Regards
Erik

ProTour69

Thanks for all the replies guys!! I was able to fully decode my vin <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

RAR

I Am Looking To Find Out What Number My Car Was In Production And Can Only Find Out The Sequence Of The Numbers. Anyone Kow Were To Find Out This Info. I Have A 2002 Trans Am Ws6 Ram Air Convertible Manual. Thanks

jimmyp

iTrader: (1)

my 98 waterpump, 99+ dont have the 4 bolts holding the pulley on