COPO BE rear on craigslist

[70 copo]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kurt S</div><div class="ubbcode-body">I knew if I said that, pics would appear. [img]<<GRAEMLIN_URL>>/smile.gif[/img]
The second one looks like alphabet practice. </div></div>

This condition is typical of the quality and performance issues encountered when a replacement worker is assigned to an element and does not understand how to properly perform the element.

More common than you would think.

[Fast67VelleN2O]

Honestly, this looks like a BL stamp to me that someone altered. The only way I would ever say this *might* be legit was if it had a correctly dated COPO posi unit and ring and pinion in it and it was in &quot;as found&quot; condition and not painted or fluffed.

[70 copo]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fast67VelleN2O</div><div class="ubbcode-body">

Honestly, this looks like a BL stamp to me that someone altered. The only way I would ever say this *might* be legit was if it had a correctly dated COPO posi unit and ring and pinion in it and it was in &quot;as found&quot; condition and not painted or fluffed. </div></div>


Exactly....on the dated COPO R&amp;P portion of the comment.

I am not going to offer opinion either way on the subject rear end. What I will say is that the obliteration marks are consistent with a known manufacturing plant correction technique as recalled to me by the spring and axle line workers.

It is troubling that segments in hobby keep calling most everything with a stamp deviation that does not fit a narrow interpretation fake. If we do this most all of the time we are collectively doomed to learn nothing new before the &quot;living past&quot; transitions into history.

The living past in my statement is in reference to still living line workers who installed these assemblies.

Of course the matter is sealed and left to us to figure out what we can - when remaining workers who can tell us what happened eventually pass away.

That is when this portion of the hobby truly passes into the historical context.

[SS427]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 70 copo</div><div class="ubbcode-body"> What I will say is that the obliteration marks are consistent with a known manufacturing plant correction technique as recalled to me by the spring and axle line workers. It is troubling that segments in hobby keep calling most everything with a stamp deviation that does not fit a narrow interpretation fake. </div></div>

You make a good point Phil. With as many inspections that I do every year it has almost gone the other way. When the stamps look too perfect I start to worry. I wrote off a CRV 3.31 rearend as being a restamp about 2 years ago and actually bought it and put it into my inventory. I thought it was fake as you could clearly see that the face had been hastily ground off and restamped in the stamp area of the axle tube. Fast forward 2 years and I get another LS6 in the shop. While inspecting it I see the same exact thing while forgetting about the other rearend. I was going to write it off as a restamp as well but something kept nagging me. I finally remembered the other rearend and bingo, almost identical and within 5 days of the car in the shop. I conferred with Chris White who also confirmed that he felt it was real. Never say never! This is also why documenting these types of anomalies are so important.

[ds1]

Mistakes like that can be a black ball on a car. And the EXPERTS are the ones to blame.

[camaromb]

My low mile LS6 also had a ground axle stamp area, not typical thats for sure. I will post pictures of the BE in question after the paint was stripped. The oxidation is very consistent in all the stamps. I think it is just a non-typical stamp, especially since it has a very difficult to find dated BE posi in it.

[Day2_69Z]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: camaromb</div><div class="ubbcode-body">My low mile LS6 also had a ground axle stamp area, not typical thats for sure. I will post pictures of the BE in question after the paint was stripped. The oxidation is very consistent in all the stamps. I think it is just a non-typical stamp, especially since it has a very difficult to find dated BE posi in it.</div></div>

So, you're saying the internals are COPO ? The carrier internals &amp; R&amp;P are correct ?

[SS427]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ds1</div><div class="ubbcode-body">Mistakes like that can be a black ball on a car. And the EXPERTS are the ones to blame. </div></div>

I disagree with you and it is often times the EXPERTS do the homework and research to prove that an anomaly is in fact a factory defect. Case in point.

[ds1]

It is a double edged sword. We look to them for answers to our questions. They are necessary. But because one says with Authority something is a fake when it may not, there is a dog pile against it. And it depends on the expert. One expert here in the east has a bad reputation because of his making mistakes and his ego. He is attacked on this site regularly. Galen Govier has tarnished his reputation passing off bad cars. Personally I think the rear in this topic looked bad or suspicious. I followed this topic to see where it went. You pointed out that it looks like one you have and others have said it looks like established practices to repair mistakes. I want to learn by being informed and not be told if something does not fit into a narrow margin of what is established as being correct. A point made earlier in this topic. These were production built. No two alike. We have a 67 GTO my uncle bought in 69 with the ugliest firewall. Turns out it has an AC firewall on a car that never came with AC. How, Why? It was just built that way. I was a little hard on the &quot;experts&quot; in my first post. My point is that when they give their opinion it is hard to change mindset after making their opinion known.

[camaromb]

This rearend in question has a E 9 J dated posi with correct side gears, round spring plate, etc. The gear set is not original, Richmond.