Ron, right on — actually I think it was mid/ late 58 on 300’s ? Got into this big time as some late 58 have 60 style control arms bigger ball joints , larger control arm bushings , the better brake backing plates and so thicker wheel cylinders . Maybe steering too at same time but personally never got into that you can get into huge hassles over vendors sending you 57 stuff for 58 D due to this— if you have the much better late 58 up 300D . Their parts books are not necessarily wrong either . It is nuanced I fought this like crazy on a 58 I have, I kept getting parts all wrong
Add into this moog sells two OD of balljoints one for new control arms one for replacement ( both need to cut new threads ) replacement is larger OD cannot be put into new control arm . Boy did I try . So like 8 choices old, new , upper lower all in two sizes Finally I bought a 58 moog parts book , all 300 D front end parts have a footnote to check car you have, multiple ball joints listed . (but no ser #) . That catalog is the only place I have seen this info . If you know this , a quick look at how upper control arm adjusts tells the story . If like F cams you have the good stuff . If like 57 ( ? shims) you have essentially Plymouth or 57 parts Not sure if they had a problem( I personally think they might (?) have upgraded just the 300D as prototype of upcoming regular Chrysler upgrades ? dont know) but 59 all have good stuff . All from memory , your mileage may vary Were the early 58, 57 and 56 (55?) huge co axial steering boxes the same ? On Jun 18, 2025, at 7:47 PM, 'Ron Waters' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
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