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Author Topic: rear end for my car dating info help experts please  (Read 1473 times)
zman1969
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« on: May 02, 2014, 09:54:23 AM »

I have a 09C 1969 - later production car and the original rear is missing my vin is 6859XX I have found a BU rear with assembly date of 09-16 what are the opinions is this too close to build date for my car? I know 2-3 weeks earlier would be optimum but there aren't many of these coming along nowadays- thoughts?
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Rich

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BULLITT65
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« Reply #1 on: May 02, 2014, 11:17:10 AM »

Hey Rich, my car is a 08C (august 69) , and my rear end has a stamp of BU 0815 G2. SO I would say it would just make it to be date correct for your car. Now one thing to consider is they started using a different format right around then.
A good find for you. How much are they asking, (if you don't mind me asking)
I think Gary's orange Z is a 09C and his has the new format. He will probably chime in with his vin so he can relay what his car came with from the factory.

Hope this helps
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
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ko-lek-tor
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« Reply #2 on: May 02, 2014, 02:00:57 PM »

My experience tells me that date would work. I have posted this info before, but my 3E (5th week of March) car has a rear axle dated April 7th!  Top that !?
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1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
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zman1969
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« Reply #3 on: May 02, 2014, 02:09:15 PM »

theyre asking $1900 for it Ko-Lec-tor I dont even know what to say about that! Im guessing you know its the born with. I have talked to gary about his. he suggested I get some expert opinions
« Last Edit: May 02, 2014, 02:48:10 PM by zman1969 » Logged

Rich

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« Reply #4 on: May 02, 2014, 11:09:22 PM »

I've talked to Rich about this already, but for everyone else's benefit, my VIN is N6866XX, and I believe it was built on 17 September (O9C week).  The rear end is the new casting (341) and it's stamped 'C  BU0829G1'....   Rich's VIN is slightly earlier than mine and was probably built the same day, OR the day before.   I didn't know if it was possible for a rear to be assembled (within a day of the car production)..  Perhaps JohnZ, Kurt, William or someone can expound on the 'shortest possible' differential build to car build time frame based on their knowledges of where the rears were assembled and how they were moved to Norwood.

Rich:   If you can wait a few weeks, I should get my actual production date from NCRS which could change from my estimate by a day or so...?
« Last Edit: May 03, 2014, 12:01:38 AM by 69Z28-RS » Logged

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« Reply #5 on: May 02, 2014, 11:45:13 PM »

Rich,
Your car was probably shipped 9/17. Hard to have an axle dated the day before. But not sure you'll find a closer date.
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Kurt S
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« Reply #6 on: May 02, 2014, 11:46:32 PM »

My experience tells me that date would work. I have posted this info before, but my 3E (5th week of March) car has a rear axle dated April 7th!  Top that !?
I , like others, try to extrapolate information based on what we know about build dates. Using the 912 a day production quota (going by memory, so forgive me if I am off), I use the CRG page http://www.camaros.org/geninfo.shtml#HowMany comparing end of month production and calculate my vins accordingly with days of production to calculate build date. This calendar year, 2014, some may have noticed, is the same date/day corespondence as 1969, so today, Friday 5-2 also fell on a Friday in 69. Not relavent, but just pointing out a fact. Anyway, I'll point out a caveat about 3E being only one day, Monday the 31st of March, which I feel in reality 3E must have encompassed the first week of April. The ending Vin for March according to the chart for Nor. plant is 62,3587. My car is 62,84XX almost 5000 past the supposed last March Vin. This would point to my car being built using the 912 per day formula as about 5 days into April, I figure. Considering there were 4 working days after the Monday 4-31 and then the weekend, I surmise the car was rolling off the line about April 7th or 8th. BAck to the rear, it has a build date of April 7th. I wonder too how it could be this close, but it is. As pointed out in other similar topics, the TT date is loosely in line with calendar dates, so maybe the car was completed more like on the 8th or 9th of April. Nonetheless, I can use what I do know and I have no reason to believe the rear is nothing but the born with component and conclude that some components can be very close. As a comparrison, My 11D car has a 11-22 axle, but so does my 12B car, same date, same BS code. If anything, I may have question about the 12B being Born with, but it has always appeared as untampered basd on brake lines etc..and has been that way at least the 35 years I have owned the car. So, one car is within a month of build, one within a week and one within a day(s).
« Last Edit: May 03, 2014, 12:15:54 AM by ko-lek-tor » Logged

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
Kelley W King
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« Reply #7 on: May 03, 2014, 07:34:38 AM »

FYI, My 08E has a BU 0819G2, with vin 6769xx
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rszmjt
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« Reply #8 on: May 03, 2014, 11:31:11 AM »

My 06A is BU0602, car was built June 16
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JKZ27
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« Reply #9 on: May 03, 2014, 05:27:40 PM »

My 12B has a BS1121

John
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« Reply #10 on: May 03, 2014, 05:52:08 PM »

The rear axle is my 02C LOS '68 Z/28 is stamped BU0119G1  E with a casting date of A 3 8.

Paul 
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ko-lek-tor
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« Reply #11 on: May 03, 2014, 08:38:38 PM »

 "My 11D car has a 11-22 axle, but so does my 12B car, same date, same BS code."  It was a little late when I posted and I chose to use my memory-a real faulty device of late. A little correction 11D= BS 1118 G2 E (Nov 18th), 12B= BS 1122 G2 E (Nov 22nd). Thanks CRG.
Jonn's 12B (post #9) is BS 1121, one day difference. I bet those rears where stacked like cord wood at the plant?!
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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
1968RSZ28
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« Reply #12 on: May 03, 2014, 10:22:50 PM »

"My 11D car has a 11-22 axle, but so does my 12B car, same date, same BS code."  It was a little late when I posted and I chose to use my memory-a real faulty device of late. A little correction 11D= BS 1118 G2 E (Nov 18th), 12B= BS 1122 G2 E (Nov 22nd). Thanks CRG.
Jonn's 12B (post #9) is BS 1121, one day difference. I bet those rears where stacked like cord wood at the plant?!

Sounds like a lot of BS to me!  Wink

Paul
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ko-lek-tor
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« Reply #13 on: May 03, 2014, 10:33:35 PM »

"My 11D car has a 11-22 axle, but so does my 12B car, same date, same BS code."  It was a little late when I posted and I chose to use my memory-a real faulty device of late. A little correction 11D= BS 1118 G2 E (Nov 18th), 12B= BS 1122 G2 E (Nov 22nd). Thanks CRG.
Jonn's 12B (post #9) is BS 1121, one day difference. I bet those rears where stacked like cord wood at the plant?!

Sounds like a lot of BS to me!  Wink

Paul

Ain't the first time I've been accused of this?!!...and that's no BS,LOL.
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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
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« Reply #14 on: May 09, 2014, 01:48:21 AM »

MY 10D has a 1031 BV Axle with an 11A VIN...
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James
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Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
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