The build date project

[402Bowtie]

Piecing together post #7 in this thread states that his 1970 Blazer s/n would be 0S138946 with build date of 12/69.

On a related note, both of the first two posts in this current thread mention that Blazers and Jimmy's don't follow the same truck sequence. I see that many (all?) 69 blazers started with a "B," but are there any more details regarding that sequence comment? I would think the last 6 s/n digits are chronological (per plant), regardless if Blazer, suburban, or truck. No?

[71CHEVYSHORTBED402]

Here's some information. Blue font is useful, black is gibberish:

If you haven't already you might add 1972 Z161544 with a build date 04/19/1972. He posted it in 2013, fairly well preserved build sheet too - gave me something to work with. I went through this to attempt to confirm my well ventilated 72 Super Z146839 was built in Mar. though perhaps Feb. using the most conservative dates & numbers available. I'm only assuming the factory didn't skip sequences.

Between March 24, 1972 and April 19, 1972 there were 7351 Z Chevy's built. That's the low end, divided by 27 days instead of 26, but a solid guide. That's 272 trucks per day and 8236 per month.

Between April 19, 1972 and sometime later in April (Mystery April Date, "MAD") there were 2502 Z Chevy's built.

If it's assumed MAD is the last day in April, then 9853 Z Chevys were built between March 24,1972 & April 30, 1972. That's on the low-end because I must be MAD, I mean the MAD is April 30th.

Using the number 9853, that's 259 trucks per day or 7908 trucks a month for the period. Strictly a guess, personally I think this is somewhat misleading, not sure why I went here EDIT: Irony, I now see that Z164046 has a 04/28/72 build date. That was a Friday and 259 pencils out after all.

Using the 03/24/1972 date (Z154193) for my 72 Super (Z146839) there's a difference of 7354 trucks. If March 1st is assumed through 03/24/72, then at 259 (minimum) trucks per day that's 6216 trucks. Bummer, still 1K short. If 272 trucks per day is used then still short 800.

That said my sticker is faded, just at that corner too, go figure. But a magnifying glass says "/72" and I'm mostly sure the month is "3". It's so faded it could be gone next month. In my edgeucated opinion (90/10+) Z146839 is March 1972, though if you add it asterisk at your discretion.

[geunther]

Originally Posted by 71CHEVYSHORTBED402

In my edgeucated opinion (90/10+) Z146839 is March 1972, though if you add it asterisk at your discretion.

Fun with math no doubt.
I looked at two of the closest dates available with a decent spread: (3-24) Z154193 and (4-28) Z163961. That is either 34 or 36 days (34 if you consider Z154193 was built at the end of the day and Z163961 was built at the beginning of the day). Using those numbers, the average is 287 trucks a day. 287 x 24 (March 1 to Mach 24) = 6888 trucks. Backing up from 3-24, the earliest for March would be Z147305.

Certainly Z146839 was built in either February or March. I'll add an asterisk, ? for the month and a note. Ill bet we can make better estimates soon.

[72-CH]

My 72 C10:
A149453

With my truck being an Atlanta built truck and member Pro299 truck being an Atlanta truck built 3/72, I would assume mine could possibly also have a build date of 3/72.

[71CHEVYSHORTBED402]

Reading some suggestions above, especially dates, you might consider a different format. Don't get me wrong, this effort by the two is outstanding, I'm reminded of the effort put into indexing the assembly manual, all we had to do was number 500+ pages

Perhaps this is a usable format. You can sort by any column and I think easier to manager by the task force. Edited:

Date (zero=no day): March 0, 1971
Factory: Fremont71 (the reason for the year is for sorting - I like how you guy's separate factory & year & this will do that. See example below if interested.)
Year: 1971 Perhaps redundant if year is added to factory, but strikes me valuable as a sort option)
Chevy/GMC (gay man's chevy): Chevy, Suburban etc. (See post 119, might be better to add Suburban, Blazers as a note or as another column to sort by, e.g. "Other").
Vin: Zxxxxxx (Not sure you need "Z" but it sorts anyway).
Notes: 71Chevy402 is a bum

Flint70
Flint71
Flint72
Fremont70
Fremont71
Fremont72

On a side, if using Excel for example, the shorter the better. Sometimes it's necessary to put columns between columns to paste right, using symbols. For example:

01/01/1970...Fremont70...1970...Chevy...Z123456...Blank*...71Chevy402 is a bum.

*Blank is a spot for Suburban and that, because blanks will throw off your paste. N/A maybe, but it's not as if you're registering every type.

Edited again, cough). The list of your factories/years and that is a nice placeholder so to speak, but I wouldn't add them to your chart until a truck comes up. Just some suggestions, I'm a bum but long edgeucation in data structure & reports was enough to be happy to leave, with CDO and perhaps PTSD too, them (*&(*)&^ are crazy especially meetings.

Originally Posted by geunther

Fun with math no doubt.
I looked at two of the closest dates available with a decent spread: (3-24) Z154193 and (4-28) Z163961. That is either 34 or 36 days (34 if you consider Z154193 was built at the end of the day and Z163961 was built at the beginning of the day). Using those numbers, the average is 287 trucks a day. 287 x 24 (March 1 to Mach 24) = 6888 trucks. Backing up from 3-24, the earliest for March would be Z147305.

Certainly Z146839 was built in either February or March. I'll add an asterisk, ? for the month and a note. Ill bet we can make better estimates soon.

I agree. If a picture was worth a darn I'd take it. The sticker is just too faded. But again, I believe it's a three. If it's March you can bet it was the first week if not day. Heck with it, I took a pic anyway, that looks like a three. A two is shaped differently If true, and I think it is, that's approx. 306 per day and a whopping 9200 a month 72 Chevy Z at the time.

We need a forensic to pipe in, there's got to be a chemical some sort.

[402Bowtie]

Originally Posted by 71CHEVYSHORTBED402

Reading some suggestions above, especially dates, you might consider a different format. Don't get me wrong, this effort by the two is outstanding, I'm reminded of the effort put into indexing the assembly manual, all we had to do was number 500+ pages

Perhaps this is a usable format. You can sort by any column and I think easier to manager by the task force. Edited:

Date (zero=no day): March 0, 1971
Factory: Fremont71 (the reason for the year is for sorting - I like how you guy's separate factory & year & this will do that. See example below if interested.)
Year: 1971 Perhaps redundant if year is added to factory, but strikes me valuable as a sort option)
Chevy/GMC (gay man's chevy): Chevy, Suburban etc. (See post 119, might be better to add Suburban, Blazers as a note or as another column to sort by, e.g. "Other").
Vin: Zxxxxxx (Not sure you need "Z" but it sorts anyway).
Notes: 71Chevy402 is a bum

Flint70
Flint71
Flint72
Fremont70
Fremont71
Fremont72

On a side, if using Excel for example, the shorter the better. Sometimes it's necessary to put columns between columns to paste right, using symbols. For example:

01/01/1970...Fremont70...1970...Chevy...Z123456...Blank*...71Chevy402 is a bum.

*Blank is a spot for Suburban and that, because blanks will throw off your paste. N/A maybe, but it's not as if you're registering every type.

Edited again, cough). The list of your factories/years and that is a nice placeholder so to speak, but I wouldn't add them to your chart until a truck comes up. Just some suggestions, I'm a bum but long edgeucation in data structure & reports was enough to be happy to leave, with CDO and perhaps PTSD too, them (*&(*)&^ are crazy especially meetings.



I agree. If a picture was worth a darn I'd take it. The sticker is just too faded. But again, I believe it's a three. If it's March you can bet it was the first week if not day. Heck with it, I took a pic anyway, that looks like a three. A two is shaped differently If true, and I think it is, that's approx. 306 per day and a whopping 9200 a month 72 Chevy Z at the time.

We need a forensic to pipe in, there's got to be a chemical some sort.

71CHEVYSHORTBED402,
I'm wondering if there are multiple layers of your sticker that maybe could be separated at the "date" corner. Perhaps the clear (that's no so clear now) top layer could be separated enough to reveal the next layer? It sorta looks like the layers became separated in that corner in your pics.

Perhaps this could risk more damage than it's worth, so proceed with caution if you decide to do this at all.


And I agree, it looks like a 3.

[71CHEVYSHORTBED402]

Originally Posted by 402Bowtie

71CHEVYSHORTBED402,
I'm wondering if there are multiple layers of your sticker that maybe could be separated at the "date" corner. Perhaps the clear (that's no so clear now) top layer could be separated enough to reveal the next layer? It sorta looks like the layers became separated in that corner in your pics.

Perhaps this could risk more damage than it's worth, so proceed with caution if you decide to do this at all.


And I agree, it looks like a 3.

I agree it might look that way, but pretty sure it's not multiple layers. More water damage at that corner, IMO. I'll double check though, though I'm I'm feeling a little suspect now Truck has a build sheet, would have to pull the seat to pull it, but I'm confident it would be like pulling a dry leaf.
Just touching it some flaked off.

Originally Posted by geunther

If you can send me the original photo. The chemicals can be destructive. But I think I see a "3".
PM sent

[geunther]

Originally Posted by 71CHEVYSHORTBED402

We need a forensic to pipe in, there's got to be a chemical some sort.

If you can send me the original photo. The chemicals can be destructive. But I think I see a "3".
PM sent

[arcticman]

Hope this helps. side note: notice the engine I.D. tag 202 hanging off the exhaust bolt matches the build sheet.

[57taskforce]

That’s what it looks like to me as well.

[pjmoreland]

This sticker is on a door I bought recently from a classic car wrecking yard just a few miles up the road from where I live. The date looks like 2/71 and the last six digits of the VIN look like 625107. Can't see the rest. Seems likely it is a Fremont truck.

[402Bowtie]

Originally Posted by pjmoreland

This sticker is on a door I bought recently from a classic car wrecking yard just a few miles up the road from where I live. The date looks like 2/71 and the last six digits of the VIN look like 625107. Can't see the rest. Seems likely it is a Fremont truck.

Does it have the metal vin on the driver door jamb or the SPID on the glove box you could verify the last 8 of VIN?

[pjmoreland]

Originally Posted by 402Bowtie

Does it have the metal vin on the driver door jamb or the SPID on the glove box you could verify the last 8 of VIN?

Sorry, I just have the door, and the owner of the wrecking yard is very difficult to get a hold of. Otherwise, I'd got take a look.

[Carl Spangler]

Originally Posted by pjmoreland

This sticker is on a door I bought recently from a classic car wrecking yard just a few miles up the road from where I live. The date looks like 2/71 and the last six digits of the VIN look like 625107. Can't see the rest. Seems likely it is a Fremont truck.

It's certainly consistent with an early Feb Z build.

From post 2:
1Z624290 = 1/27/71 (Build Sheet)

[57taskforce]

Originally Posted by pjmoreland

This sticker is on a door I bought recently from a classic car wrecking yard just a few miles up the road from where I live. The date looks like 2/71 and the last six digits of the VIN look like 625107. Can't see the rest. Seems likely it is a Fremont truck.

Thanks for posting this up. If at all possible you find your self in that yard again, try and get the year and plant digits. I agree it looks like it could be a Fremont truck but I’m hesitant to put it up unless we can verify it. Thanks.
Tonight I Added some pm’d info as well as what has been posted up in the last few days. I’ve got a little more pm’d stuff to add in the coming days.
Thanks everyone!

[pjmoreland]

Here's the build sheet from a 72 Cheyenne Super I used to own.

CCE142Z148035
09 03-06-72

[71CHEVYSHORTBED402]

Originally Posted by pjmoreland

Here's the build sheet from a 72 Cheyenne Super I used to own.

CCE142Z148035
09 03-06-72

Sure a lot of March & April Z Chevy represented. Very cool, remove any asterisk from Z146839 if you care to, I shouldn't need a forensic after all That serial number is only 1146 off mine with three days labor to build it assuming Sat. Sun. off.

If a five day work week that factory punched out 450ish trucks per day at the time.

[57taskforce]

Thanks a ton Keith, that is very valuable info for this project and gives us at least a rough idea of what we can likely expect. We’ve got enough in right now that we can get a really good estimate of some days or months, I hope to see that trend continue.

[Carl Spangler]

I have an update to the build info for my 1971 stepside SWB C10. I was shocked to find the very tattered build sheet still under the seat.

1Z622515. build sheet date of 01-21-71.

This truck was shipped to Santa Fe Motor Company at 418 Cerrillios Rd Santa Fe NM. It originally went into forest service use and then was transferred to a volunteer FD in a small NM town. I purchased the truck from the volunteer FD guy.

[402Bowtie]

Originally Posted by Carl Spangler

I have an update to the build info for my 1971 stepside SWB C10. I was shocked to find the very tattered build sheet still under the seat.

1Z622515. build sheet date of 01-21-71.

This truck was shipped to Santa Fe Motor Company at 418 Cerrillios Rd Santa Fe NM. It originally went into forest service use and then was transferred to a volunteer FD in a small NM town. I purchased the truck from the volunteer FD guy.

That's an awesome find! Congrats!

[57taskforce]

Originally Posted by Carl Spangler

I have an update to the build info for my 1971 stepside SWB C10. I was shocked to find the very tattered build sheet still under the seat.

1Z622515. build sheet date of 01-21-71.

This truck was shipped to Santa Fe Motor Company at 418 Cerrillios Rd Santa Fe NM. It originally went into forest service use and then was transferred to a volunteer FD in a small NM town. I purchased the truck from the volunteer FD guy.

Done! Nice find!

[402Bowtie]

70 chevy
0z155555
4/13/70

[57taskforce]

I’ll get them added. I’ve got another I found in person to add as well.
Arctic man, that’s a pretty sweet find with the engine tag.

[Carl Spangler]

From BAT:

1970 CST/10 longbed Chevy.

CE140Z155555. with a build sheet date of 04/13/70

[Carl Spangler]

Originally Posted by 402Bowtie

Beat you to it in post 144

Ahhhhhh, I only posted it because it wasn't in the first page list(s).