How to get the VIN# from the engine block
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 were made in canada)
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
P.S. The car is a 2000 Pontiac Firebird (T/A)
Last edited by chucklaw; May 30, 2005 at 12:53 AM.
What were to happen if the ECU is not from the original motor? Would a different VIN show up?
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By LS1swap
No problem all the info you will need is on the block, but it is not either of the numbers you have posted. You need the VIN derivative it is laser inscribed on the block. It is located on the side of the flange the opposite side that the starter mounts to. I will use mine as an example 1W2132624
1 represents GM division 1= chevy 2= pontiac
W represents model year in my case 98
2 represents assembly plant in my case St. Therese
The last six digests represent plant sequence
From this I was able to tell my was a chevy.....98 model year....built in st therese( all f bodies are).... And the last six digests of my actual vin are 132624
Vin derivative pos. Equivalent actual vin pos
1 3
2 10
3 11
4-9 12-17
So you start inserting these
X X 2 X X X X X X W 2 132624
Now to Finnish it up
The first digit of the vin represent country of origin 1= US
The second represent manufacture g = GM
The third represents division 1=chevy
The fourth and fifth represent car line yy= corvette fp = camaro
The six body type 2= hatch back 3 = convertible
The seventh restraint system 2= air bag and manual belts
The eighth engine g= LS1 I don't know the letter for LS6
The ninth is a check digit I used 0 and it worked for me
The tenth is model year v= 97 w=98 x=99 z= 2000 I don't know what they did after that
The eleventh is assembly plant from the derivative we know that is st therese in my case
The twelfth through seventeenth is plant sequence from the vin derivative we know that is 132624
1G1FP (just have to guess at this one I guessed 2 hatch back) 2G( I guessed 0 and it worked) W2132624
2G1FP22G0W2132624
I ran a car facts on this and it came up as a z28 camaro
Then I went into the dealer and had them run the vin to see what warranty work had been done
Hope this helps good luck
As for "FV",
The "F" represents "F-body", that should go without saying.
The "V" represents Formula & Trans Am as compared to "S" for Firebirds.
There is a formula used to derive the "check digit", to make it difficult to "fake" VIN numbers (a computer programmed with the formula can quickly detect bogus VINs). Changing one digit in the VIN will change the check digit.
As for "FV",
The "F" represents "F-body", that should go without saying.
The "V" represents Formula & Trans Am as compared to "S" for Firebirds.
There is a formula used to derive the "check digit", to make it difficult to "fake" VIN numbers (a computer programmed with the formula can quickly detect bogus VINs). Changing one digit in the VIN will change the check digit.




