Numbers question
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 793
Likes: 10
From: Grafton MA
Numbers question
I was looking at the number on the engine of my 71...The first sequence of numbers matches the VIN; and the suffix of the last sequence of letters/numbers is CGZ for LT-1. Does anyone know what the other letters/number represent just before the suffix? Mine reads V0330 (at least that's what it looks like)....or maybe V033O, the second "O" looks like it might be a little more rounded so maybe it's an O as opposed to a zero.
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 793
Likes: 10
From: Grafton MA
Thanks! Any reason why the zeros might look a little different? I'm assuming they would use the same font for the enitre stamp. Unless it was a restamp 
and i hope that isn't the case.
Also, if it is March 30 then I'm should the block casting date code near the distributor have the same date?
and i hope that isn't the case.Also, if it is March 30 then I'm should the block casting date code near the distributor have the same date?
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Dont get worried about a restamp yet.Most of the restamps I've seen are "more" perfect than the originals.Those stamps are put in a gang fixture and are all seperate-so the font could have been differant.Post a pic so some of guys can see it.I have some 71 LT1 numbers pics I will check them to see if they have 2 "0".The block casting date will have to precede the engine number date.
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 793
Likes: 10
From: Grafton MA
Thanks again. I just checked the block casting date and it does precede 0330...it was Feb 71. I'm running out now but will take a picture of the numbers on the engine later to get feedback...good to know it could have been a different font because now that i look at it the two 3's look different too. I'd be interested to hear what you find with the other 71 LT-1 numbers
Last edited by pwsusi; Oct 21, 2006 at 08:37 AM.
Drifting
Joined: Sep 2006
Posts: 1,259
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From: MS
Originally Posted by pwsusi
Thanks! Any reason why the zeros might look a little different? I'm assuming they would use the same font for the enitre stamp. Unless it was a restamp....
Don't sweat it. For reasons know only to GM it was common practice when the stamp calls for 2 "zeros" to stamp one as a zero and one as the letter "O". The same thing also occurs with the number 1 and the letter "I". An engine assembly date of March 11 would be frequently stamped as 031I.
Race Director
Joined: Jul 2001
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Originally Posted by wfo76
For reasons know only to GM
The O got used for the number 0, 6 upside down was used for 9 and vice versa, I got used for 1.
Not rocket science.
Drifting
Joined: Jun 2003
Posts: 1,455
Likes: 5
From: Upstate South Carolina
Originally Posted by pwsusi
Thanks again. I just checked the block casting date and it does precede 0330...it was Feb 71. I'm running out now but will take a picture of the numbers on the engine later to get feedback...good to know it could have been a different font because now that i look at it the two 3's look different too. I'd be interested to hear what you find with the other 71 LT-1 numbers
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Originally Posted by Mike Ward
Not really. This was a production operation to pump engines out as fast as possible, not building the crown jewels. The guy that stamped the pad just grabbed a stamp that lloked close to what he needed.
The O got used for the number 0, 6 upside down was used for 9 and vice versa, I got used for 1.
Not rocket science.
The O got used for the number 0, 6 upside down was used for 9 and vice versa, I got used for 1.
Not rocket science.
BELIEVE IT OR NOT ...........!!! for once ..............
.... i actually AGREE with Mike, can't see anyone making an intentional error !!!those misused numbers & letters are done with very poor quality controll & carelessness, you know the old saying...........never by are car on a FRIDAY or on a MONDAY ???
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