1970 Engine Build Date Versus Serial Number

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Here's what we have so far from the two posts involving casting date and engine assembly date spreads...
sorted by year - then cast date

Engine Cast and Assembly Date Spreads_001.jpg

[Bill B.]

Re: 1970 Engine Build Date Versus Serial Number

Hi Mark, I forgot to include my VIN Deriv for my July 16, 1970 assembly: 15552.

Thanks!

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Here's a Chart showing the spreads for the cars listed in the Table that have all 3 dates (casting; eng assy; and body build date
note: plotting "0" for the NAs unsupportably skews the data downward).

It would be nice to see some '68 data and more '69 data (with all 3 dates) to flesh out what that hump in the trendline looks like...

The # of days after Engine Assy to Body Build Date (BBD) are rather unremarkable to me (avg=12; MAX=36; and MIN=4). The MAX is 3x HIGHER than the AVG; and the MIN is 3x LOWER than the AVG - almost like a Bell Curve centered on the AVG.

Engine Cast and Assembly Date Spreads_001 CHART.jpg

[Justin S.]

Re: 1970 Engine Build Date Versus Serial Number

Does anyone know?

[Bob H.]

Re: 1970 Engine Build Date Versus Serial Number

7023 Cast 02/25, engine 03/02 bbd 03/18

[Terry M.]

Re: 1970 Engine Build Date Versus Serial Number

Terry,
Did work resume on the 5th or 6th?

I am sorry Justin that I took so long to respond. Your question got lost in the other posts.

Trim tag stamps indicate production resumed on May 6 (E06)

[Justin S.]

Re: 1970 Engine Build Date Versus Serial Number

Thanks, Terry. So Tonawanda engine assemblies couldn't have taken place on May 5, correct?

[Terry M.]

Re: 1970 Engine Build Date Versus Serial Number

Justin

I haven't seen one in over 40 years of looking. That is a ways from saying it couldn't happen, but it is pretty good evidence that it didn't happen. Depending on the reason for your inquiry you may want to research further.

You might do some on-line looking for the issues related to that work stoppage. I doubt it was a local issue. Sometimes it is not even a GM issue, but it could be transportation issues that end up as what we today call supply chain issues. If you can find a story about the issues you might find a story about when the Tonawanda workers returned to work. Foundries can not be shut off and turned on like light bulbs, The furnaces have to be shut down slowly and brought back on line the same way. A news paper in Buffalo NY might provide some information if they have on-line images of the paper. Also libraries or Historical Societies in Buffalo or Tonawanda might also help with independent confirmation of what I have told you. Good Luck in your search.

There is a book by Pete LeCastro that documents some/most of the St Louis work stoppages and the reasons for them. That book, if you can find it, might give you some clues as well. I think it is out of print, but someone may have a copy, or perhaps eBay might turn up a copy.

[Gary B.]

Re: 1970 Engine Build Date Versus Serial Number

Mark, thank you for the charts and graphs. Great information.
Sorry for the delay, but it's been a bit crazy around here... Here are a few more you can add.
1970 LT1, VIN 14544 Cast date E210, engine build date V 0527CTK, Body Build Date July 7
1971 LT1, VIN 2551 Cast date H200, engine build date V 08CGZ, Body Build Date Nov. 25
1968 L71, VIN 16191 Cast date A118, engine build date T0313IR, Body Build Date April 1
Gary Bosselman
68-69 TIM&JG Co-ordinator
70-72 TIM&JG Co-ordinator

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

...1971 LT1, VIN 2551 Cast date H200, engine build date V 08CGZ, Body Build Date Nov. 25...

Hi Gary,...thanks.

I have your '70 and '68 entered, but do you have a complete eng assy date for your '71 ?
is it Vxx08 or V08xx ?

I'll update the chart and repost after your reply

[Gary B.]

Re: 1970 Engine Build Date Versus Serial Number

Engine build V0825CGZ.
Thanks for your help
Gary B

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Engine build V0825CGZ...

Here 'ya go...

Engine Cast and Assembly Date Spreads_001.jpg

[Gary B.]

Re: 1970 Engine Build Date Versus Serial Number

Thank you, Thank you.
Gb

[Dave S.]

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Dave,

I also need the Trim Plate Body Build Dates (BBD) to be able to fully update the plot