I'm looking for some confirmation on my observations of rim numbers and answers to my question at end.

I'm sure most all restorer's know the JJ code for Hemi car rims. I actually have 3- of them and don't know what I'll ever do with em. I had four, but that's another story.

I've got a question about a later set of rims I've accumulated, and what the numbers on them mean. They are Steel Slots from 78/9 Dodge Trucks. Could these be serialized to a production unit? There are 3-sets of numbers on them.

They all have a "Pentastar" followed by 40360 91, and that is marked the same, from outside toward middle on every rim. I figure that's the PN.

They also have marked in various directions what I figure is a date and shift code. It's marked 3 26 79 2 on one, 3 3079 1 on another. I have two marked 5 31 791 What I believe is the shift code is marked more lightly than the other numbers.

The final set of numbers had me wondering if they were individually serialized rims until I got two with the same final set of numbers, having mfg dates 4-days apart. So now I'm wondering if anybody knows if they were possibly stamped to a line production (job) number? The first two dates I gave have the same final number. S190214. However, the other two which were built on same day and shift if my date coding guess is correct, have a different final number. One is S190306, the other S190329. That would lead me to guess they were sent to the line only twenty three jobs apart.

Can I get any confirmation on my guesswork?

I know I got a pair of these rims from one truck, and over a couple years managed to get two straight and decent rims from maybe two other trucks. For certain I got one off a 79 TrailDuster. Seems pretty odd that it would have been built the same day as the other rim. Or am I all soaking wet and the numbers mean something else entirely? I can't verify which rims were the pair and which were the later additions, only guess by the numbers that match.

first "JJ" wheels aren't "HEMI" wheels, it's the other way around - "HEMI" wheels have "JJ" wheel contour.
read the WHEEL section



4036091 is the part number for the chrome 15x8" wheels used on LREs & others



I'd agree:
3 26 79 2 = 3/26/79 shift 2
3 3079 1 = 3/30/79 shift 1
5 31 791 = 5/31/79 shift 1

Quote:

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The final set of numbers had me wondering if they were individually serialized rims until I got two with the same final set of numbers, having mfg dates 4-days apart. So now I'm wondering if anybody knows if they were possibly stamped to a line production (job) number? The first two dates I gave have the same final number. S190214. However, the other two which were built on same day and shift if my date coding guess is correct, have a different final number. One is S190306, the other S190329. That would lead me to guess they were sent to the line only twenty three jobs apart.

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I'll "assume" these other numbers are component ID/tracking/numbers for the manufacturer & somehow these translate to:
S190214 ~ 2/14/79 & additional info
S190306 ~ 3/06/79 & additional info
S190329 ~ 3/29/79 & additional info

A wheel manufacturer would make thousands of the same wheel at a time (with all stampings) & ship lots to the auto manufacturer to use at their own rate.

Other than the date relationship there is ZERO connection to a specific VIN numbered vehicle.

& the stamps on the wheel shown below are possibly due to a different wheel plant (same manufacturer).

Thank You Dan. I'm always trying to better understand the processes that we've come to have our vehicles by. That's an interesting additional marking you've shown. Maybe I should scrub a bit more! I did find a few barely legible strings that I didn't mention because I wasn't sure that I wasn't just seeing patterns in the rust.

Let me make sure I'm on the same page. The S190*** number would be a combination mfg number/date code. The "S190" would be the component ID for the wheel type @ the mfg? Makes sense if I'm understanding you right.

Then that would leave the other date code as having been stamped @ assy line's tire hole? That could explain why that one is oriented differently on every wheel. A matter of convenience.

NICE Trucks BTW!!!

I miss mine...