These other chassis-codes are not very useful then.
They are as useful as any model code given in the IMCDb, for me. What would make them less interesting than, say, an
LX code on a 2006+ Dodge
Charger or a
GMT922 code on a 2007-14 GMC
Yukon, among other examples?
In a way I guess it is logical to put the P-10 in the model name, since at that time C-10 / K-10 was also a model name for pickups.
There are two Step-Van 7 without P-10, is there a reason? Is it because they could be P-SomethingElse?
I'm not the one who added these 2 identifications, but it seems to be a mere omission. Unlike the "primal" 1958-68
Step-Vans or the 1964-91
Step-Van King models, which were either
P-20 or
P-30, the 1962-80
Step -Van 7s were all
P-10s sharing the same current model code, even in 1966 and 1967 when 4 different boxes were available. It's a kind of "sub-model" name although having no "sibling" in the van line.
If needed, here is an overall view of the whole "family":
Model codes usually depend on the wheelbase and on the payload capacity.
• 1958-67 Step-Van
∗
P-20 (1960-67)
♦ P2345 (1958-66) / 20945 (1967)
♦ P2545 (1958-66) / 21345 (1967)
♦ P2645 (1958-66) / 21545 (1967)
∗ 30 (1958-59) /
P-30 (1960-67)
♦ 3445 (1958-59) / P3345 (1958-66) / 30945 (1967)
♦ 3545 (1958-59) / P3545 (1958-66) / 31345 (1967)
♦ 3745 (1958-59) / P3645 (1958-66) / 31545 (1967)
• 1961-80 Step-Van 7
∗
P-10
♦ P1345 (1961-66) / 11035 (1967) / PS10535 (1968-72) / CP105 (1973+)
• 1964-91 Step-Van King
∗
P-20
♦ P2535 (1964-66) / 21335 (1967) / PS/PE/PT20835 (1968-72) / CP208 (1973+)
♦ P2635 (1964-66) / 21535 (1967) / PS/PE/PT21035 (1968-72) / CP210 (1973+)
∗
P-30
♦ P3535 (1964-66) / 31335 (1967) / PS/PE/PT30835 (1968-72) / CP308 (1973+)
♦ P3635 (1964-66) / 31535 (1967) / PS/PE/PT31035 (1968-72) / CP310 (1973+)
♦ PS/PE/PT31435 (1968-72) / CP314 (1973+)
♦ CP318 (Aluminum body only. 1982+)
/!\ Some specs were modified along with the code changes. So the codes on a same line may not refer to exactly the same model but are just written this way to avoid too many lines in this quick listing.
In that latter case, are really all current [P-10] what they are supposed to be? Or should they just because Step-Van 7 without P-10 ?
So no
Step-Van 7 P-SomethingElseThanP-10, and as
7 implies
P-10, the
P-10 could indeed be questioned. But as both were apparently part of the sales name, some other really weird but apparently factory-compliant identifications should then be questioned too (like the Dyna
Z identified as
1954 Panhard Dyna 54 to
1959 Panhard Dyna 59, among other oddities)
edit: I see there are only 10% of the Step-Van that have the P-10 in chassis code, so I suppose that the info is correct for these...
I checked all
Step-Van [P-10] IDs, and all are apparently
Step-Van 7 indeed. I'll soon add the correct MY for the few vans without it. But I didn't check all
Step-Vans, so:
• some
Step-Van 7s may be lost among the
Step-Van Kings. I'll add it to my "to be checked" list, which is like all lists, i.e. without limit except the one of my spare time. So it won't certainly be done in a few days
• I can't say if the
[P-20] or
[P-30] linkage is correct when present. But just for info, as
P-20 and
P-30 models shared the same wheelbases and bodies, it's almost impossible to differentiate the model for most of the vans.
• if accurate, the
P-20/
P-30 info should be part of the name, not of the code.
_____
By the way, I found a 1961 Chevrolet document (a salesmen's internal brochure) about it. I was apparently not the only one to be wrong about the unveiling year of this van:
these 11 models should be "defaultmodelyearized" accordingly to that info, I think. I can of course change them manually if that number it's not worth writing a MySql script. Or write it for you, as long as I have the corresponding table and field names.