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#476 | ||||||
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,156
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Re: The build date project
Having said that, I'll take a swing at these:
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Just to be clear: to me "serial number" = "sequential portion of VIN" Quote:
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Fremont - 99% Flint - 60-80% Quote:
SPID - no. The sequence number does not appear on the SPID K ![]() ![]() ![]()
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 01-04-2024 at 04:43 PM. |
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#477 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,156
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Re: The build date project
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We are talking about the relationship, or lack thereof, between the build sequence number and the VIN/serial number. Vehicle orders are sent from Central Office to the plant in a strange six character code (see below). The order number is the tracking mechanism until the PVI, or Primary Vehicle Indicator, is established. The PVI is pulled in a sequence and are used to identify the vehicle until the VIN is established. The serial portion of the VIN is also pulled in sequence. These can be broadcast to cab shop at the start of build and maintain pretty much this order. However, here is where the fun starts: The vehicle/VINs can get shuffled after cab shop before paint, and again after paint but before trim but the build sequence number still counts up one by one. In other words - there is a unique cab shop sequence counting up one by one, and then a unique paint shop sequence counting up one by one, and then comes the final line (General Assembly) sequence number counting up one by one - the one everybody cares about. I didn't want you to think that the GA build sequence number is jumping around. It is not (barring some catastrophe where a vehicle needs to be pulled completely from the system and reinserted later). The best analogy I can think of is writing checks: you write the checks in sequential order - pretty much always - but they do not necessarily clear the bank in that order. The PVI and corresponding VIN/Serial numbers are pulled sequentially - but they do not necessarily clear the end of the line in that order. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 01-04-2024 at 06:27 PM. |
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#478 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,129
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Re: The build date project
Good stuff. Hey man, if you're starting to track sequence number I got one for you, it's 24419
![]() From here, I don't think there's enough solid data to add value for tracking sequence number, especially since in at least one case, only 5 of 6 digits are shown. Hmm, might shed some light similar approx. build months per available data, not sure.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 01-05-2024 at 08:09 PM. |
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#479 | ||
Senior Member
![]() Join Date: Dec 2009
Location: TN.
Posts: 7,782
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Re: The build date project
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If you had 10 in a row We was 2 Zones down line. I got to know some of my Fellow workers though. ![]() Quote:
One of the biggest Improvements I suggested was , I had a Job installing Mirrors. If the mirror was (No Good). ![]() The back up Stock / Rack was Disorganized. I helped them set up a Rack for this mess/ Because A truck going down the line without a Mirror , It Got covered up Quick. Door panel and Etc. I helped designed a Back-Up rack for Every paint Color. and And Both Options. Power mirror Non Power mirror Chrome mirror was also included. Then 12 Paint colors. There was 20+ mirrors that were Required. So I asked for a Rack of 7 long and 5 slots high . This way there was 3 rows that were used for the High Users at the time. I gain a lot of Knowledge from there Crazy way of doing Business. ![]()
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________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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#480 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,129
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Re: The build date project
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Interesting to note you have a duplicate under 1971 Freemont, which is my truck ![]() So you can delete the record that reads "1Z654520 = 05/19/71 *serial number is within 10". Or vise versa, whatever you like. I had to re-write some of this, my understanding of was messed up: For "real life" comparison, the records show another Freemont truck built on 5/19/71, post 352. Both build sheets show 24 as the Job Sequence Number, next to the build date, I don't know what that means in practical terms. Looks like it was common for them to drop a digit from the sequence. That or the logic is a mystery to me short what's described above. Note the lag in sequence numbers as compared to the serial numbers, a difference of 20. The K truck is a SWB Chevy, seems that's irregular, I don't suppose many of those were built? My C10 was special ordered with leaf springs on a SWB 2WD, pretty rare frame and combo. Perhaps they were grouped together somehow, because both builds were uncommon. Here are the differences between the two trucks. On a side, coincidentally, 5/19/1971 is the date on coolant decals for what's supposed to be for 1971 & 72 trucks. Thus, most 1971 trucks including these would have had the previous decal. Great job adding page numbers, as demonstrated by this.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 01-08-2024 at 07:32 PM. Reason: Correction |
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#481 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
2J158913 = 05/72 (post 481)
2F160354 = 03/24/72 - 03/31/72 (post 481) Blazer 1B650804 = 06/11/72 (post 481) 1J634982 = 05/71 (post 481) 8Z139537 = 03/01/68 - 03/18/68 (post 481) Last edited by 402Bowtie; 02-16-2024 at 12:38 PM. |
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#482 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
1J643533 = 06/71 (post 482)
01134504 = 03/70 (post 482) 2F111337 = 09/71 (post 482) suburban 8Z152044 = 04/27/68 (post 482) 9S866625 = 06/24/69 (day 175 ?) (post 482) Last edited by 402Bowtie; 02-01-2024 at 02:08 PM. |
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#483 |
Senior Member
![]() Join Date: Feb 2003
Location: Gold Canyon Arizona
Posts: 4,266
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Re: The build date project
heres my 1971 k5 blazer built 6/71 KE181S673516
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1971 K5 CST Blazer 1965 Chevelle Malibu 283 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey |
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#484 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
7S191468 = 07/01/67 - 07/03/67 (post 484)
7J132287 = 02/22/67 - 03/10/67 (post 484) 8J113773 = 10/23/67 - 10/31/67 (post 484) 2F348544 = 02/17/72 - 02/29/72 (post 484) 2F346414 = 02/01/72 - 02/18/72 (post 484) 8S174755 = 03/22/72 - 03/31/72 (post 484) |
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#485 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
2F1528XX = 03/72 (post 485)
2S503885 = 10/71 (post 485) 0Z126461 = 12/69 (post 485) 0J122359 = 11/69 (post 485) 7S194748 = 07/67 (post 485) Last edited by 402Bowtie; 02-12-2024 at 02:29 AM. |
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#486 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
yote, I am going to leave that one off the list since it doesn't add any new information...we could have inferred a June '71 build date for that serial number based on the existing list.
I'm now updated through post 486! The updated lists can be found at the links below: GMC on post 63 67-71 Chevy on post 64 72 Chevy on post 65 Reminders: -Don't delete any posts that are prior to the most updated point of the thread. For example, if the list is updated thru post 435, don't delete any posts 1 - 435. That would be bad. -Only post a serial number if it adds value. For example, a door sticker with the month of 11/71 doesn't provide value if its serial number is in between two other November serial numbers already on the list. -Check the list before posting to see if the serial number is already on the list--there have been a lot of duplicates posted. -Please type out the partial vin, the date, and the post #, ideally in this format: 2A103580 = 09/71 (post 314). This saves me a lot of time when I can copy and paste. _________________ 7S148684 = 02/14/67 - 02/28/67 (post 486) 7B148429 = 06/67 (post 486) 1F811266 = 03/24/71 - 03/31/71 (post 486) 2J507165 = 02/14/72 - 02/29/72 (post 486) 7Z151494 = 04/28/67 (post 486) Last edited by 402Bowtie; 02-16-2024 at 12:42 PM. |
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#487 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
8J128287 = 01/09/68 - 01/31/68 (post 487)
0B161446 = 06/70 (post 487) 7S151229 = 02/21/67 - 02/28/67 (post 487) 2S199321 = post-06/07/72 (post 487) 9B811984 = 09/29/68 - 09/30/68 (post 487) I think the two equipment codes are 09/29 and 09/19. Month code of 9. Last edited by 402Bowtie; 02-16-2024 at 08:20 PM. |
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#488 |
Senior Member
![]() Join Date: Nov 2022
Location: So central coast, CA
Posts: 427
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Re: The build date project
Post 488
68 Fremont truck KE148Z 110596 Scheduled date: 10-05-67 Production date: 10/10/67 (which I rarely see on build sheet) PIC #4 Crazy documentation and "3" build sheets and protect o plate. No, not mine. I taped out of the bidding war.....sadly. May regret it someday, but not today ![]() Last edited by CKfan; 02-23-2024 at 11:32 PM. Reason: Post #488 |
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#489 |
Active Member
![]() Join Date: Jun 2007
Location: SW Washington State
Posts: 193
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Re: The build date project
Post 489
GMC Freemont 2Z510866 - 4/72 |
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#490 |
Active Member
![]() Join Date: Jun 2007
Location: SW Washington State
Posts: 193
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Re: The build date project
Question - is the date on the protecto plate the date the truck was sold?
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#491 |
Registered User
Join Date: Dec 2020
Location: Joggins Nova Scotia
Posts: 1,599
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Re: The build date project
good day sir,the date on the blue door decal is the manufacture date.that isn't as far as i know,the Protecta-Plate.my understanding has always been,the Protecta-Plate is the metal plate with all the numbers stamped in,on the back page of the warranty booklet.i don't have the PP for my truck but i do have it for my 67 Impala wagon,i can go look but i know the vin,engine number is and some other info is stamped in there but i'm not sure about the sale date but i'll go look.
Last edited by mr.mud1; 03-01-2024 at 08:00 AM. Reason: had to make a correction |
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#492 |
Registered User
![]() Join Date: Sep 2003
Location: Denver, CO
Posts: 3,723
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Re: The build date project
Yes, believe so.
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