Original 6 pack carb experts

[440ehigh]

I recently picked up a NOS carb choke for the 6 pack set up. I noticed on the side it has the number 12 stamped into it is that a common number stamped into them I can't find any information on it. I've read that the divorce choke has the last 2 of the part number stamped into them.
Then is there a way to re plate them. I have one spot from sitting in the box it's started to rust

[pschlosser]

I agree when there is only a few digits stamped, it's often the last 2 or 3 of some part number.  But "12" doesn't correlate with "20"

it's hard to say if that is NOS original or not.  The box looks authentic, but that doesn't mean what it used to.  But the part sure looks authentic.  I have one or two of those around, and they do NOT bear a stamping on them.   That one looks really good for being 50 years old.  Almost too good.  But I don't think it matters, as it looks to me to pass for OEM.

Plating would require submersion on an electrolyte (electro plating) that may damage the diaphragm, within.  There IS a method to "paint" on electroplated zinc, but it's a good deal of work, and may not be worth the effort.  That method involves charging the brush and painting on a saturated aqueous zinc solution.

You can buff it out and keep it oiled, and hit it with a clear coat to make the repair last longer.

[440ehigh]

Yea it's been hard to find any pictures of originals I should say anything up close to see numbers or anything like that I agree the 12 doesn't work with any of the part numbers.
I guess I didn't even consider how good the condition is. That's a valid point.

Yea from originals I've seen it looks to match pretty well with the opening of the vacuum port and the correct bend in it.
The rust spot is hard to see I do like the idea of buffing it out and keeping it oiled

[Floyd]

Here are some pics of an NOS PART, an original carb (1970 date), and an over-the-counter replacement carb (1974 date code).

NOS

[Floyd]

Original 1970 carb

I can't see any stamped numbers

[Floyd]

1974 carb

Notice the the angle of the outlet and the numbers stamped on the base.

[pschlosser]

with regard to the angle of the nipple in post #5, that looks like the "four-barrel" (4160) version of the choke pull-off, for it comes straight out, where as the "six-barrel" (2300) version is bent downward to facilitate routing in the tight spaces.

with regard to the plating in post #3, notice how, even after 50 years, the cadmium yellow plating is rich and golden because it's been tucked away in a box.  modern plating methods no longer use cadmium (too toxic) and instead, use a hexavalent chromium dip (as in the movie Erin Brockovich) and it's not as yellow (port #1), compared to cadmium.

with regard to post #1, it looks like the pull off is missing the pin and connecting rod.  one can fabricate one, but still...  most of the ones I see for sale on epay, likewise missing the rod, so maybe those are newer productions of the part.

[440ehigh]

Thanks @Floyd for the reference pictures so seems the originals don't have any numbers stamped into them.
The pictures of the 1974 over the counter ones are the ones I see the most with all the numbers stamped into them plus the angle of the outlet.

I'm regretting not posting a part wanted post for one of these seems there are more NOS of these around then I thought.

[440ehigh]

Ok that's good to know why that platting looks so nice I was going to comment on how nice the plating was just thought it was kept in a better condition atmosphere.
I guess I thought the pin and linkage was sold separately not as a complete set.

Will maybe I didn't get as good of deal as I thought or a true original.

[pschlosser]

Will maybe I didn't get as good of deal as I thought or a true original.

And I don't want to be critical or rain on your parade.  What you got looks nice and will pass for OEM, and may very well BE OEM. 

The correct roll pin can be had from most hardware stores with a full selection of bolts.  In my area of the planet, that is ACE Hardware. 

Finding the rod stock... that measures 0.156-inch (5/32-inch) and may be more challenging to locate.  But using smooth needle nose pliers, you can bend your own that will pass for OEM.

Do look for an alternate source, perhaps a more complete assembly, if that pleases you.  But DO take care of that box, and sell it with the parts you don't use.

[440ehigh]

@pschlosser thanks for your input that's why I'm asking for more information, I saw it but never questioned the plating condition or that it didn't have the linkage I just assumed it was sold separately thanks for the info.

I know on the carb sites they sell the linkage I just don't know the diameters of the rods.

This is why these sites are so helpful.

I guess I should consider myself lucky I only paid a little more then the admitted reproductions but they don't look as close as this one

[BZaar]

I'm not a 6 pack carb expert but the guy that rebuilt my original 2300 carbs IS and it would appear that mine does not have the number 12 stamped on it. (have to zoom in to see it)

[440ehigh]

Thanks for the additional photo it shows that the plating is a rich dark yellow color

[Floyd]

4 @440ehigh

I have been looking at the discussion taking place on the b-bodies only site.  Upon closer examination, my original 1970 carb choke diaphragm does in fact have a stamped number "94".  Sorry for not noticing it earlier.

Here's a link to the discussion on the other forum:
https://www.forbbodiesonly.com/moparforum/threads/original-6-pack-experts.322669/

[440ehigh]

Yea I posted a couple places to get multiple responses. Good to know numbers being stamped into them isn't uncommon but definitely notice the difference in platings