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Author Topic: 69 Z  (Read 1980 times)
262jp
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« on: October 23, 2013, 01:42:17 PM »

I am looking to buy a numbers matching 69 Z with a build date on the cowl tag of 12 B. Could a BU 12 13 date on the rear diff. be correct? thanks
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ko-lek-tor
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« Reply #1 on: October 23, 2013, 02:09:14 PM »

I would say yes. I have a 12B and it has a 1122 (Nov.22) original rear. I also have a 3E, 5th week of March, which has a 0407 (April,7) original rear!
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Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85
BULLITT65
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« Reply #2 on: October 23, 2013, 02:23:42 PM »

Man I just looked at a calendar from 68. That would be awfully tight to near impossible I would think. 12-13-68 is a friday on the second week of the month. So they were able to produce the rear end on that friday and then run it over to the assembly line that same day for it to be installed in a car. It is not impossible but seems very improbable. IMO
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
BULLITT65
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« Reply #3 on: October 23, 2013, 02:26:48 PM »

I would say yes. I have a 12B and it has a 1122 (Nov.22) original rear. I also have a 3E, 5th week of March, which has a 0407 (April,7) original rear!
You are talking about a month for them to get it in a car, which falls in line fine. BUT his example of the rear end getting put in the same day it was stamped? He says 12B (second week in december) rear dated 12-13, (last day of the week corresponding to 12B). John Z, Kurt care to weigh in here?
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
cook_dw
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« Reply #4 on: October 23, 2013, 02:46:33 PM »

Just because it is a 12B car doesnt mean it was finished that same week..   Wink


I feel like the rear is definitely possible for that car.  Of course without papers it will be a useless discussion..
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Darrell Cook

1967 LeMans Blue SS/RS L35 clone
1968 Rallye Green SS L78 - unrestored original
1968 Matador Red Z28
ko-lek-tor
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« Reply #5 on: October 23, 2013, 02:47:30 PM »

I will let the experts chime in. Based on my serial number of my 12B car and using the 912 cars per day built that has been established and using published end of month production serial numbers I can surmise: My car was completed probably on the 18th of December. The car could have entered the assembly side of plant on the 13th and 2-3 days later,as said, exited plant, putting it around 18th. If you look at my other example, my March 3E car: If it hit the plant on 5th week (one day=31st) of March, It had to be completed after April6th, because the rear in that car is dated April 7th. That is my point and why I feel it is possible. The trim tag date "loosely" corresponds with calendar as I have understood.
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Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85
262jp
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« Reply #6 on: October 23, 2013, 03:17:20 PM »

The motor and transmission line up perfect with the build date. The motor is stamped V1204DZ and the trans. is P9T04B which is Dec. 4th. I wonder how far away from the Norwood plant were the rear diff's built? I have checked every casting number and date on the block and heads and it all seems ok .Just not sure on the rear end.
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Hot302
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« Reply #7 on: October 23, 2013, 03:41:57 PM »

My 12B  Z has a V1203DZ Motor and P9T04A Trans. and BU1204G1 rear. Being an LA built car with a schedule code of I406 I figured it was built around Thursday Dec. 12 give or take a day or two.
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Rick
69 RS/Z28
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BULLITT65
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« Reply #8 on: October 23, 2013, 05:54:50 PM »

Well a protecto plate I guess would answer the question. If the car was still getting put together the following week, than maybe it becomes more likely it is original to the car. The rear ends didn't have a vin stamped on them like the motor and trans, if it is that close to the window of being built I wouldn't loose any sleep over it. BUT
How often did a car start to get put together one week and then get finished up the next, or wait? for the correct part to be on site and installed?

I guess I can imagine them having a decent stock of 12 bolt rear ends and then that following monday a new shipment is dropped off and this 12/13 stamped unit gets put in front of the old stock and gets installed. It could have happened just like that, if other members want to weigh in with their dates it may be the case.
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
z28z11
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« Reply #9 on: October 23, 2013, 11:23:53 PM »

Just because it is a 12B car doesn't mean it was finished that same week..   Wink


I feel like the rear is definitely possible for that car.  Of course without papers it will be a useless discussion..

I'll second the motion. Fisher Body assigned/attached the tag, but the car could have finished in the 3rd week, easily. MSO's were usually cut the day they were finished (I don't believe later than one day afterwards); an example is my 01C X77, which was assigned it's MSO to the dealer on 1/28. My car could have had it's trim tag assigned as late as 1/23 or 1/24 and still been in the third week.

Your 12B Z could have been finished as late as 12/18 - 12/20, which could give you nearly a full week after tag assignment before assembly. An MSO or POP would tell you for sure, obviously, but there is a precedent for close deliveries on some drivetrains as many threads have noted in the forum. I vote for "it's possible".

As always, my own opinion -

Regards,
Steve
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1968 Z28 BRG/W
1969 Z28 X77 LeMans/W
1969 X66 L78 Cortez/BVT
1969 Z11 L48
ZLP955
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« Reply #10 on: October 24, 2013, 03:06:58 AM »

The CRG members have previously said that if any component was not available to complete a car, then it would not commence assembly and would be rescheduled. I guess no way to say how often this happened, but could account for some close component stamps and trim tag dates.
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Tim - 04A VN '69 z/28 69-69 715 ex-E/MP
BULLITT65
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« Reply #11 on: October 24, 2013, 03:12:02 AM »

thanks I missed that previously. I was surprised they would pull cars off, but hopefully this guys rear end is the original to the car then.
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
69Z28-RS
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« Reply #12 on: October 24, 2013, 08:46:14 AM »

They would  'delay' initiating the build, not pull them off during build to 'wait' for the part.     they would not START the build until all the parts were available (but I'm sure there were exceptions to this, as there are with everything).   Anytime the line (or the normal process) is interrupted, it costs $$money...
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
JohnZ
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« Reply #13 on: October 24, 2013, 10:23:26 AM »

If it was known before the body build started that a required major component (like an axle) wasn't going to be on hand in time for the chassis build, the body wouldn't be built until the component availability was confirmed. If the body was already in process and a major component shortage became known (records screwup, transportation failure, etc.), the finished body could be held in the Chevrolet body bank until the component was available. Or, worst case (and rare), the order could be changed to a different ratio or Posi/Non-Posi that WAS available, and the unit would be built that way; this didn't happen very often, as it required a lot of specs work to manually re-create the order so it would generate the correct Broadcast codes when the unit was released from the body bank. Dealers and customers also didn't react well to arbitrary order changes at the plant.
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'69 Z/28
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KurtS
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« Reply #14 on: October 24, 2013, 06:26:16 PM »

I'd need the VIN of the car to comment on the axle date.
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Kurt S
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