To Verify Numbers Match
#1
To Verify Numbers Match
I would like to verify whether the engine serial number on my 72 Delta 88 matches the VIN. Where, on the engine, would I look to find the number? Thanks in advance. 72old$
#4
The serial number is on the front left of the block on a little pad just below the left head's front freeze plug.
It should be something like 38M123456
The last 6 digits should match the last 6 of your VIN.
It should be something like 38M123456
The last 6 digits should match the last 6 of your VIN.
#5
005-3.jpg
#7
It's true about the VIN derivative of all '68 and newer. The pad with the VIN derivative is hard to see on an assembled engine, with the exhaust manifold and brackets in the way. But, if the pad area is clean, and you get in there with a small mirror and a flashlight, you can see it.
Randy C.
Randy C.
#8
Did anyone pick up on the fact that the supposed VIN derivative in the photo I linked to above appears to have TEN characters, not nine? What's up with that?
No, it's not a photo I took, I stole it from another thread on this site.
No, it's not a photo I took, I stole it from another thread on this site.
#9
37 1Z 129581
I understand :
3 = Oldsmobile
7 = 1967...or 77..or 57,87 (?)
129581 = VIN derivative
What the heck is '1Z' ?
Super secret experimental hi-po ?
BTW..If you look closely at mine (hard to see in that pic), you'll see it was so good they stamped it twice ! Its exactly the same number....twice.
#10
Yeah, that's what I read also. Olds didn't stamp a VIN derivative until the 1968 model year, so if the apparent "7" is the model year, it would be 1977. I think by the 1980s GM was using letters for the year. It could also be that the "7" is spurious and the "1" is the year. In any case, whoever set up the stamp for this block apparently was not paying careful attention - proving that mistakes DID happen.
#11
Ahhh...So maybe it was a '71 and the stamper was a new guy who figured he better stamp 3 71 Z (Olds - 71 - Freemont) ...
On mine, the top stamp is pretty faint, but readable for the last couple of digits.
The stamper must've looked at it and decided to hit it again below that.
He must've hit a high nickel area at the end of the first stamp !!
The stamper must've looked at it and decided to hit it again below that.
He must've hit a high nickel area at the end of the first stamp !!
Last edited by Indy_68_S; July 22nd, 2011 at 09:15 AM.
#12
#13
Absolutely right!
The engine unit number does not match the VIN. All 1968-up Olds motors have a VIN derivative stamped on the block. The first character of the VIN derivative matches the first of the VIN and the last eight match the last eight of the VIN. The number is stamped on a pad at the left front corner of the block.
#14
M = Lansing, Michigan as in your VIN # should be 3L67_2M546747 if its a convertible, can't tell from your avatar. The under score is the engine code letter (H,J,K,M,T,U,Vor W) ( with T,U & W designating 455 engine) and if it is a '72 350 then yes it is gold, the 455 would have been metallic blue.
Last edited by GAOldsman; July 23rd, 2011 at 07:53 PM.
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