Does anyone have any idea where I can get the tag that goes on the differential and identifies a positraction rear end?

Thanks.

Tom

Are you talking about the red plastic tag? I might have one floating around here somewhere.

Tom,
Understand this, if it is the red tag you need for positrac, you also need a different filler plug. The posi filler plug has a flange on it where that red tag rides. If you just want a posi tag, and you do not care about about it being the red plastic version, I think the metal tag that goes under a rear cover bolt for later cars is still available. If it is not, I have several hanging on the peg board over the workbench.

Tom,
Understand this, if it is the red tag you need for positrac, you also need a different filler plug. The posi filler plug has a flange on it where that red tag rides. If you just want a posi tag, and you do not care about about it being the red plastic version, I think the metal tag that goes under a rear cover bolt for later cars is still available. If it is not, I have several hanging on the peg board over the workbench.
Tom, do you also have the correct filler plug? If you do then let me know how much it and the red plastic tag are and I will send you the $$$$$.

Thanks.

Tom
281-412-7556

Sorry Tom, I wish I had a bucket full of plugs and tags. I don't know whether or not the aftermarket sources have both tags and plugs.

This is a topic that I would like to know the correct answer to. Some people say one thing and some another.

Which style of tag did the factory use for an original '67 Chevelle 12 bolt? (I had one back then, but don't remember.) I'm also wondering which is correct for a '70 posi.

According to the axle codes, both my '67 and '70 were originally posi cars. But neither has the filler plug with the flange that would allow use of the red plastic tag. Did people discard the flanged filler plugs, did GM not really put the tags on, did they all come with the metal tag, or did it vary from factory to factory and from year to year?

I am wondering this also. My fact cd says the red tag. But my posi unit doesn't have a flanged plug, nor does the posi unit on my friends car.

I don't see why if it was suppose to have a red tag, someone would remove the plug and buy a different plug and put in it. Like I said, both these rears have no flanged plug in them, and both have the original gears.

I called Year One and they told me the red tag started in 1968, and my 67 should only have the tin tag.

I wonder if '67 cars in the end of the build year got them as they brought in the 68s or something. I haven't seen a 67 with the red tag yet.

Mike's 66'67 CD is excellent and it says red plastic tag ......I agree the logic on the chance of plug being changed is remote and I assumed since my car cdn built 66 it was different as it came with the metal tag ( I owned it in the sixties) No grooved filler plug ....... so it may be possible the tag thing could be plant related ,but for me metal tag is correct on my car and it appears from this thread some 67's too. Post in resto forum to get some more opinions ....... not sure I would rely on Year One ??

I wasn't relying on them. Just stating my confusion on the matter. Some say red, same say not.

And yes, the fact cd is an awesome resource.

It might be a plant related thing. Never know what they do from plant to plant.

I took a plug and red posi tag out of a 68 rear end, because I was thinking of running a posi in my original 67 open rear.

The plug was too large to fit the original 67. I could be wrong, but I think that is why the 67 had the metal tag and not the red tag on the filler.

I believe the metal tags were used from 1974 and on-my 70 chevelle ragtop still retains the original 12 bolt posi 3:31 gears and still has the red tag and plug in it-those metal tags are still available from Gm I believe. Check with our sponser Ground Up for the red tag and plug-keep on cruising-Dave.

I have three 1965 12-bolts and all have the red tag.

Just weird, that if all rears are to have the red tag, why would someone go to the trouble to remove the tags and remove the flanged plug and replace them with a non flanged one. I know of 3 '67 rears locally that are like this, and then that the person that started this thread has.

Could it be a build plant issue?

Up until very recently, you could get the Correct Filler Plug from any Chevy dealer.. about $8.00 US but now they have been discontinued and b/c of this.. the prices have been through the roof on ebay for these $8 plugs.. as in $150 and more.. I know. Crazy!!! My suggestion would be to touch base with your local dealer and maybe get lucky to find one still on shelf. The aftermarket guys do not sell the correct plug either, to my knowledge.. I always get the correct RED TAG from Paragon Corvette...If no luck getting the plug.. I would bet a quick post in classifieds will net a used one from a rear sitting around...

I will only add: check and confirm that these 67's without the flanged plug, are REAL POSI cars.. don't base this Red Tag issue on cars just being SS.. the tag is for POSI REARS.

Mike Crown

I'm basing this on posi rears. At least I believe so. This is a pic of the codes on my '67 rear. It has casting# (3917124NF) in the web area, which puts it as a late 1967 rear. When I referenced the KF code, my fact cd says 3.55 open, the '67 area on chevellestuff.com shows KF as 3.55 posi non metallic. So it looks like KF came in 2 flavors. The B is buffalo and E is eaton positraction. The 5 11 matches my rear dates. I opened the rear up and it still has 3.55 GM gears and posi guts.

So is it a hard fact that all '67s came with the red tag? Also did they also put the tin tag on the rears, even if it has the red tag?
http://myweb.cableone.net/mdthode/Diff.jpg

KF is posi. The Fact CD is not the best source for axle codes. I prefer this.... http://www.chevelles.com/years/67/67rearcodes.htm

I think, as Mike said, Paragon has nice repros of the red tags.

Ya I saw the red tag listed in parigon book. Just no flared diff plug.

I got to thinking about this, and you never know what people will do with stuff after 38 years. Its possible someone mixed up the plugs at a lube shop or something like that.

Guess I'll hunt the flared plug and get a red tag.