1970 Engine Build Date Versus Serial Number

[Bob H.]

Serial Number Engine Build date Car Built
7023 03/02 03/18
7040 02/23 03/18
8638 03/02 05/08

Is this typical or maybe strike related?

[Ralph S.]

Re: 1970 Engine Build Date Versus Serial Number

1970 vin 6242 2/27 03/10 350/370 Lt-1

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Serial Number Engine Build date Car Built
7023 03/02 03/18
7040 02/23 03/18
8638 03/02 05/08

Is this typical or maybe strike related?

Bob,

Big Blocks, Small Blocks or a mix of both?

Also check out this thread
https://www.forums.ncrs.org/showthre...1969-big-block

[Michael H.]

Re: 1970 Engine Build Date Versus Serial Number

Serial Number Engine Build date Car Built
7023 03/02 03/18
7040 02/23 03/18
8638 03/02 05/08

Is this typical or maybe strike related?

Bob,

The strike started on Sept 15, 1970 until Nov 23, 1970 and lasted for 67 days. It shut down over 145 plants and suppliers in the US & Canada as it impacted over 400,000 UAW workers. My 71 Chevelle SS 454 which was built on Dec 16, 1970 in Arlington, TX. It has many parts including the engine ( cast date August 9th and build date Sept 8th ), tranny, rearend, etc that were built in August and early Sept of 1970. Parts just sat as there was no production going on for 67 days.

Mike

[Terry M.]

Re: 1970 Engine Build Date Versus Serial Number

Bob,

The strike started on Sept 15, 1970 until Nov 23, 1970 and lasted for 67 days. It shut down over 145 plants and suppliers in the US & Canada as it impacted over 400,000 UAW workers. My 71 Chevelle SS 454 which was built on Dec 16, 1970 in Arlington, TX. It has many parts including the engine ( cast date August 9th and build date Sept 8th ), tranny, rearend, etc that were built in August and early Sept of 1970. Parts just sat as there was no production going on for 67 days.

Mike

Mike

The work stoppage you are referring to was not appropriate to 1970 Model Year Corvette production. It refers to 1971 Corvette Model Year production which began August 17, 1970 (A17).

1970 Corvette production Began January 5, 1970 (A06) and ran until July 31, 1970. (G31) I suspect production ran a day or two beyond July 31, but the trim tags we have found in the last 40+ years are stamped G31.

The work stoppage during the 1970 Model Year ran from April 7, 1970. (D07) to May 5, 1970 (E05)

BTW: That sounds like a nice Chevelle. I love those cars too. I have a 1967 Chevelle that is not quite stock.

[Michael H.]

Re: 1970 Engine Build Date Versus Serial Number

Mike

The work stoppage you are referring to was not appropriate to 1970 Model Year Corvette production. It refers to 1971 Corvette Model Year production which began August 17, 1970 (A17).

1970 Corvette production Began January 5, 1970 (A08) and ran until July 31, 1970. (G31) I suspect production ran a day or two beyond July 31, but the trim tags we have found in the last in the last 40+ years are stamped G31.

The work stoppage during the 1970 Model Year ran from April 7, 1970. (D07) to May 5, 1970 (E05)

BTW: That sounds like a nice Chevelle. I love those cars too. I have a 1967 Chevelle that is not quite stock.

Terry,

You are correct that 67 day strike impacted 1971 cars not 1970.

Mike

[Mark E.]

Re: 1970 Engine Build Date Versus Serial Number

1970 #12931
LS5 block casting H 25 9 (08-25-1969)
Head castings D 15 70 (04-15-1970 for both of them)
Intake casting E 8 70 (05-08-1970)
Engine assembly (stamp pad) 0608
Trim tag F22 (06-22-1970)

So engine assembly was over nine months after block casting, but only two weeks before final assembly. Who knows if this is due to a strike, rework, or something else. All of the above is believed original to the car; see: https://www.forums.ncrs.org/showthre...k+casting+date

[Bill B.]

Re: 1970 Engine Build Date Versus Serial Number

I'll join in the fun and share:

Engine Cast = F 27 0 = June 27, 1970
Engine Assy = V0629 = June 29, 1970
Vehicle Assy = G16 = July 16, 1970

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Here's the data so far sorted by VINs provided...(sorry, vBulletin doesn't like imported tables very much)...

VIN deriv	Engine Cast	Engine Assy	Days After Cast	BBD (Car Assy)	Days After Cast	Days After Engine Assy
6242	2/27/1970	3/10/1970	11	not listed	NA	NA
7023	3/2/1970	3/18/1970	16	not listed	NA	NA
7040	2/23/1970	3/18/1970	23	not listed	NA	NA
8638	3/2/1970	5/8/1970	67	not listed	NA	NA
12931	8/25/1969	6/8/1970	287	6/22/1970	301	14
???	6/27/1970	6/29/1970	2	7/16/1970	19	17

[Justin S.]

Re: 1970 Engine Build Date Versus Serial Number

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

[Ralph S.]

Re: 1970 Engine Build Date Versus Serial Number

6242 needs to be corrected engine assembly was 2/27 build date on trim tag was 3/10 I do not have the casting date.

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

6242 needs to be corrected engine assembly was 2/27 build date on trim tag was 3/10 I do not have the casting date.

Sorry, Ralph,

correction incorporated below...

VIN deriv	Engine Cast	Engine Assy	Days After Cast	BBD (Car Assy)	Days After Cast	Days After Engine Assy
6242	NA	2/27/1970	NA	3/10/1970	NA	11
7023	3/2/1970	3/18/1970	16	not listed	NA	NA
7040	2/23/1970	3/18/1970	23	not listed	NA	NA
8638	3/2/1970	5/8/1970	67	not listed	NA	NA
12931	8/25/1969	6/8/1970	287	6/22/1970	301	14
???	6/27/1970	6/29/1970	2	7/16/1970	19	17

[Mike E.]

[Mark F.]

Re: 1970 Engine Build Date Versus Serial Number

Interesting, Mike...
here's your car added to the mix...I used your ship date instead of the BBD.
it would be cool if we could get Ralph's cast date

VIN deriv	Engine Cast	Engine Assy	Days After Cast	BBD (Car Assy)	Days After Cast	Days After Engine Assy
6242	NA	2/27/1970	NA	3/10/1970	NA	11
6243	3/3/1970	3/4/1970	1	3/11/1970	8	7
7023	3/2/1970	3/18/1970	16	not listed	NA	NA
7040	2/23/1970	3/18/1970	23	not listed	NA	NA
8638	3/2/1970	5/8/1970	67	not listed	NA	NA
12931	8/25/1969	6/8/1970	287	6/22/1970	301	14
???	6/27/1970	6/29/1970	2	7/16/1970	19	17

[Mike E.]

Re: 1970 Engine Build Date Versus Serial Number

[QUOTE=Mark Francis (30800);931341]Interesting, Mike...
here's your car added to the mix...I used your ship date instead of the BBD.
it would be cool if we could get Ralph's cast date

Ralph's was an LT-1, mine an L46, FWIW.