Maybe not true Ron . Been there. Had 58 D both ways , look up parts for 58 ,check numbers vs 59 or 57 you often got wrong one . Much of the literature in parts books all messed up about D . 59 has the later upper arms too , I think changed with brakes . You are right though all 59 are later stuff. Note two part numbers for upper arm bushings 58 . Late 58 , up , is Distinguished by increasing the thickness of the backing plate , bigger control arm bushings , I think front end adjusting methods changed too ( cams vs shims) ) backing plate thickness step changed the wheel cylinder step . When you swap a frame you learn all this the hard way . Not familiar with term “three platform “ at all . Maybe another change . But structural change was ( despite erratic stories about when , or if all at once , or just 300 ) in 58 . 57 had problems , to put it mildly . Noises failing to hold adjustments , locking if left sitting , etc not all those fixed by upgrade either. Whatever , one D had the later parts factory . Other did not . I got so confused by this at the time , and — I am not being strident about it ... as ten years ago , — that I chased down a period Moog catalog , also even more confusing . Even corresponded with them by email . I won’t even go into ball joints , must be 4-5 of them in this period. But catalog gives you no dimensions , you find out when you get part . I vaguely remember Imperial used an upgraded ball joint sometimes listed as if fitting all 300’s . Sometimes the numbers are same size but mean different quality line , rubber etc . Very confusing . Finally took to 300F parts all fit ok. Do consider this as information from on the ground . And do not believe all you read on 300D front end orbrake parts. It depends. Main question was spindles , anyway . Sorry for digression. .. John Sent from my iPhone not by choice > On 8 Jul 2020, at 12:34 pm, Ron Waters <ronbo97@xxxxxxxxxxx> wrote: > > John - > > The changeover to three platform brakes happened Jan 1959. Wheel cyls, > support and backing plates, etc. Nothing changed from 57 thru early 59. > Spindles ? Not sure how long they used the same ones. Parts book would have > the answer. > > Ron > > -----Original Message----- > From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On > Behalf Of John Grady jkg@xxxxxxxxxxxxxxxxx [Chrysler300] > Sent: Wednesday, July 08, 2020 12:18 PM > To: chrysler300@xxxxxxxxxxxxxxx > Subject: [Chrysler300] Brakes / blue sky > > Hi all , > Anyone know if 60-62 front spindles are essentially the same ? I believe > stock brakes 59- 62 interchange ,62 last year of the two leading shoes , > says spindles probably do too . In fact spindles may carry later into 60's > .., if the later 63 up Bendix style drums Bolt on to similar spindle > interface ) --But That is not the issue here... > I know 60 parts fits late 58 /59 too, ? may fit 57 if used With 57 / early > 58 upper control arms ( has smaller upper frame bushings) . I used 59 de > Soto Lwb frame under a 57 , used 60 F brakes / front end parts on that frame > as I had them . > Late 58 up brakes way better structurally than 57 , upgraded mid 58 . Why > wheel cylinders differ . > > Looking at ? larger front discs than current upgrade tech allows -limited > due to our small wheels ( 15,14) . > I read in an SAE article that 16 " wheels are the best engineering trade > looking ahead on tire roadworthyness ,handling etc. - same rolling OD, with > smaller sidewall . So tires available in 16" will be many . coincidentally > I converted a few to that size over getting really good top end Michelin > tires . > In the future I think tire companies will look at 14 and 15 the way our > generation looks at 6" model A tires on wire wheels . > Would love really good brakes , - you do not have to worry about, like a > modern Jeep GC or corvette . Fit in 16... ?? Just looking at this right now > ... > > Brake guy I am working with had worked on 62 300 ( and up ) ok , but not > before then . He has all 62 data , I think the same spindle goes back to at > least 1960 . > FYI , - > John > ... > " Brakes to match 150 mph" > > Sent from my iPhone not by choice > > ------------------------------------ > Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx> > ------------------------------------ > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to > https://groups.yahoo.com/neo/groups/all/manage/edit > > For list server instructions, go to > http://www.chrysler300club.com/yahoolist/inst.htm > > For archives go to > http://www.forwardlook.net/300-archive/search.htm#querylang > ------------------------------------ > > Yahoo Groups Links > > > ------------------------------------ Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx> ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! 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