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#21
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Quote:
Looks right with one exception, I think it should be rotated out and then folded back over the bolt.... I think anyway.
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Greg Reid Palmetto, Georgia |
#22
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Resurrecting my old thread......
If the tag goes on the bottom right bold of the diff & it is bent over the head of the bolt, should it read correctly, but upside-down? Or does it read inverted but right side up. I can't quite read the words on the picture from post #15, but here is the picture. Also, anybody know if the original tags are aluminum, or stainless?
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#23
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My virgin 69 GTO convertible had its tag on the same bolt as that last pic. It’s installed face down pointing towards the axle then folded towards the 6 o’clock bolt so you can easily notice it when servicing the car.
I bought the car from the original owner in 93 and the car is very untouched and has 69k miles. It had no sign of a gasket change so it may well have had factory whale oil in it. It’s possible many survivor cars have untouched diff covers since both the regular and STT differentials never required fluid changes.. the only preventive maintenance mentioned in the shop manual was to verify the level by the fill plug. Ironically my 2017 suburban posi needs diff fluid and additive replaced every 25,000 miles. Reverse progress ;-)
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My Break Away Squad 1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s) 1969 Custom S 2dr ht 1969 LeMans (2dr & 4dr ht & Cvt) 1969 LeMans Safari wagon 1969 GTO (2 Cvt, 2 ht & Judge ht) 1969 Cat (3 Cvt’s & 2dr ht) 1969 Ventura wagon 2 seat 1969 Exec 4dr post 1969 Bonnie Cvt & 2 wagons 1969 Bonnie Brougham (4dr ht & Cvt) 1969 Grand Prix 2 SJ’s 1969 2+2 2dr ht (Canadian) |
#24
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So this way after its folded over, reading upside down, or like the second picture where the words are inverted, but right side up?
Im Just not clear on that part. .
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#25
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I’ve seen them that as you walk up to the diff from the rear of the car and the tag is folded over the bolt you can read it right side up.
Also I’ve often seen that the tag is right side up and not reversed when you unfold the tag.
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My Break Away Squad 1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s) 1969 Custom S 2dr ht 1969 LeMans (2dr & 4dr ht & Cvt) 1969 LeMans Safari wagon 1969 GTO (2 Cvt, 2 ht & Judge ht) 1969 Cat (3 Cvt’s & 2dr ht) 1969 Ventura wagon 2 seat 1969 Exec 4dr post 1969 Bonnie Cvt & 2 wagons 1969 Bonnie Brougham (4dr ht & Cvt) 1969 Grand Prix 2 SJ’s 1969 2+2 2dr ht (Canadian) |
#26
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So maybe there's another style tag out there. I'll do some searching.
Thanks!
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#27
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I found that Mopar used a similar tag with the words written to the left so it would read correctly when folded over the bolt head, but they look a bit different. Looks like all of the re-pop tags read with he hole to the left side.
here a mopar tag. I am guessing this is what you were talking about orientation wise? these look closer as far as the material goes. the GM re-pops I see are stainless & shiny.
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#28
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I never did find a GM tag that read like the mopar tag I posted above, so do
I just install it in this direction, folded over the bolt, but reading upside-down? Or do I have the wrong tag? .
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#29
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I would just rotate the tag as you have it
from the 10 position to the 4 position and tighten it down. That way, it becomes readable when you unfold it to remove the bolt. That's the way mine is actually. Probably the same tag.
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Greg Reid Palmetto, Georgia |
#30
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This is the typical stainless re-pop that is too shiny. I am unsure if the originals where aluminum or some sort of tin, but I glass bead blasted it & it came out looking more like it should. Of coarse clean metal over black paint would not have been original either so I guess its just a preference at this point?
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#31
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Yes, I meant so that it reads correctly when you unfold it to get to the bolt. Actually, I have what appears to be the same tag and that's how I did it.
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Greg Reid Palmetto, Georgia |
#32
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Its kinda funny..... Many times I thought about that tag being a crap shoot to be seen if somebody was adding fluid to the diff, but then Dennis made a comment in post #10 about it having to be bent out of the way so the servicing mechanic knew it needed oil additive when refilled. I never thought about the tag that way but suddenly made sense. No need to install more additive unless the cover is pulled, or you have a really bad leaker....
When I was in high school we all stuck our heads under other cars to see the tag. But as I recall back then the tag read "super cool burnouts" I really don't recall them being about oil additive..
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68 GTO 4-spd Convertible 78 S/E Trans am L78, WS6 Auto 78 S/E Trans am W72, WS6 Auto 79 10th aniv W72 Trans am 80 Indy pace car Trans am 89 Trans am GTA |
#33
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Here are a couple of pictures from my collection.
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'68 GTO 4-spd Hardtop (11) '68 GTO Convertible AT (1) '70 LeMans Sport Land of Lakes Muscle Car Classic Facebook Event Facebook Wall (Kurt Smith,Minneapolis) |
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#34
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Interesting Kurt. I never would have thought to mount it that way.
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Greg Reid Palmetto, Georgia |
#35
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On 8.5 rears for near 15 years I cleaned house pulling S spring posi type carriers as cores to rebuild. Pulled several WarnerMotive early cone style 8.5 carriers as well as quite a few late 80's up 30 spline light duty Auburns. Alum tag (if still there) positioned @ 5 o'clock. Most times bent up, sometimes folded over, almost rolled up. Not always a rhyme or reason, but nearly always where one couldn't read the lettering on the tag w/o straightening out the tag.
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Buzzards gotta eat... same as worms. |
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#36
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https://www.hemmings.com/classifieds...#&gid=1&pid=18 I can not challenge Mr. Old Pinion Head's experience and years and years and years of differential work. Nope. What I can opine about is why I believe these differential tags were designed as they were and how that would play out when installed on a car. When you examine where, on the tag, the text begins, it is well offset from the bolt hole. On my differentials, the entire text is centered and visible/readable when attached as I have described on what I call the 5 O'clock bolt (attached with text facing differential and then folded-over the bolt to reveal text). As a logical thinker (perhaps I'm deluded in that assessment), it would make sense that the tag would both be readable as installed AND would require that the person servicing the differential be required to move it out of the way in order to reach the bolt head. This would, theoretically, present the best case scenario to ensure that the party servicing the differential would be forced to read the message. We all know, however, that people make errors; that different people on the same shift might do things differently; that people on different shifts work differently and, finally, that across the life of a part that is serviced, people who service the part might remove and reinstall in a different orientation. The one thing I will say with great certainty, however, is that these tags were not installed sticking straight out from the bolt to essentially point at the right rear tire.
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'68 GTO 4-spd Hardtop (11) '68 GTO Convertible AT (1) '70 LeMans Sport Land of Lakes Muscle Car Classic Facebook Event Facebook Wall (Kurt Smith,Minneapolis) Last edited by 68gtoMN; 09-30-2021 at 05:29 PM. |
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