The build date project

[57taskforce]

Awesome work guys, that’s a great first milestone.

[402Bowtie]

These are from an old thread on the board. Most on that thread appear to already be captured within the first two posts here or have illegible pictures.

70 GMC; SZ68109; 3/70

70 chevy; 0Z142486; 2/70

70 chevy; 0S138xxx; 12/69

70 chevy; 0A158364; 7/70.....this one was already on the list but had incorrect date.

72 chevy; 2F355033; 3/72... Original decal and reproduction decal found at link above.

[geunther]

Originally Posted by 402Bowtie

72 chevy; 2F355033; 3/72... Original decal and reproduction decal found at link above.

I added the others but this one does not follow correct sequencing for Chevrolet. Is it potentially a GMC?

[402Bowtie]

Originally Posted by geunther

I added the others but this one does not follow correct sequencing for Chevrolet. Is it potentially a GMC or typo of 155033 vs 355033?

Are you referring to the "3" after the "F"? That threw me off too. But I think Flint produced a lot of trucks. One of my trucks is also a CCExx2F3xxxxx VIN (but the date portion of the blue sticker is ripped off and I don't have a build sheet, so I haven't added it to the list)...But both the blue sticker and the SPID have matching VINs with the F3 sequence on my Chevy truck.

There were I think 603,347 Chevy trucks (Blazers, C10s, K20, suburban, etc) produced in 1972 (according to post #6 in this thread...I added up all the 1972 production numbers). It appears Flint produced close to half of those 600,000 Chevy trucks based on the serial number referenced. In other words, Flint produced the 255-thousandth Chevy truck in March of 1972, and production likely went into June or July.

[geunther]

Originally Posted by 402Bowtie

Are you referring to the "3" after the "F"? That threw me off too. But I think Flint produced a lot of trucks. One of my trucks is also a CCExx2F3xxxxx VIN (but the date portion of the blue sticker is ripped off and I don't have a build sheet, so I haven't added it to the list)...But both the blue sticker and the SPID have matching VINs with the F3 sequence on my Chevy truck.

There were I think 603,347 Chevy trucks (Blazers, C10s, K20, suburban, etc) produced in 1972 (according to post #6 in this thread...I added up all the 1972 production numbers). It appears Flint produced close to half of those 600,000 Chevy trucks based on the serial number referenced. In other words, Flint produced the 255-thousandth Chevy truck in March of 1972, and production likely went into June or July.

I certainly do not doubt the veracity of the "F3", I just have not been able to find the pattern. Considering Flint producing 300,000 for 72 equals 25,000 per month. So going to the end of March should equal about 200,000 trucks. So going with those numbers, the highest VIN for March of 72 Flint should be F300000. Of course, these numbers are based upon averages, not faster and slower production at different times.

Looking at March numbers for the other plants, Flints numbers would have to be about 71% higher. But if Flint produced half of the entire 72 run, this percentage would make sense.

However, we do have a Flint jamb sticker 4/72 with a sequence of F163780. I have added the F355033 and will continue to try and reconcile this.

[402Bowtie]

Originally Posted by geunther

I certainly do not doubt the veracity of the "F3", I just have not been able to find the pattern. Considering Flint producing 300,000 for 72 equals 25,000 per month. So going to the end of March should equal about 200,000 trucks. So going with those numbers, the highest VIN for March of 72 Flint should be F300000. Of course, these numbers are based upon averages, not faster and slower production at different times.

Looking at March numbers for the other plants, Flints numbers would have to be about 71% higher. But if Flint produced half of the entire 72 run, this percentage would make sense.

However, we do have a Flint jamb sticker 4/72 with a sequence of F163780. I have added the F355033 and will continue to try and reconcile this.

Another curiosity... Has anyone seen a 2F2 VIN? Did they jump from F1 to F3 for some reason?

[geunther]

Originally Posted by 402Bowtie

Another curiosity... Has anyone seen a 2F2 VIN? Did they jump from F1 to F3 for some reason?

The lower number is after the higher number, so that alone does not explain. I'm sure the the folks on this forum, we will figure it out.

Canadian trucks?

[geunther]

Originally Posted by geunther

I certainly do not doubt the veracity of the "F3", I just have not been able to find the pattern. Considering Flint producing 300,000 for 72 equals 25,000 per month. So going to the end of March should equal about 200,000 trucks. So going with those numbers, the highest VIN for March of 72 Flint should be F300000. Of course, these numbers are based upon averages, not faster and slower production at different times.

Looking at March numbers for the other plants, Flints numbers would have to be about 71% higher. But if Flint produced half of the entire 72 run, this percentage would make sense.

However, we do have a Flint jamb sticker 4/72 with a sequence of F163780. I have added the F355033 and will continue to try and reconcile this.

Ok, I think I found the information but am looking at it more deeply and will share when I find more. It appears for 1972 Flint also used sequencing beginning with 300001 and 700001. For 71 Flint also used 800001.

[geunther]

From web
Z154606 = 4/9/70