Brian Coleman Posted April 4, 2020 Report Share Posted April 4, 2020 Hey ya all. This brian now working on a 1952 Chrysler saratoga. Rearend spider gears took out all gears Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted April 4, 2020 Report Share Posted April 4, 2020 ooh...that is bad news....and this is more than not the elusive 3.54 ratio I bet... Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 4, 2020 Author Report Share Posted April 4, 2020 Ahhhhhh no. 3:73. Looking to find interchanges. I know where there is a hind end out of a 47 plymouth but got a feeling it won't interchange Quote Link to comment Share on other sites More sharing options...
DJ194950 Posted April 4, 2020 Report Share Posted April 4, 2020 (edited) does your original gearset have 2 or 4 spider gears? If only two the 47 rear should fit complete. Also how many splines are on the spider gear ends of the axles? I can look later in my old interchange manual with the other info mentioned to make sure. Is the 47 the same ratio? DJ Edited April 4, 2020 by DJ194950 Quote Link to comment Share on other sites More sharing options...
derbydad276 Posted April 4, 2020 Report Share Posted April 4, 2020 I have an extra axle that came out from under a 53 coronet hemi car come get it N/C Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 4, 2020 Author Report Share Posted April 4, 2020 Ok. 4 spider gears in the saratoga Yes the plymouth is a 3:73 Quote Link to comment Share on other sites More sharing options...
DJ194950 Posted April 4, 2020 Report Share Posted April 4, 2020 The 47 is a 2 spider gears type of rear and according to the book changing from a stronger 4 gear type to the weaker 2 gear type is Not recommended. You also most likely have 16 splines on the spider ends of your axles. The 47 uses 10 spline axles. While is some cases the parts are removed from one gearset and installed in the other to make it work. If you have 10spline axles in good condition now the 47 3rd member complete may fit in your housing, and work fine. One other question is how many attachment bolts hold your 3rd. member to the main housing and also in the 47. They made a change in some rearends about these years. I cannot say 100 % because the book my does not cover this because of the stronger/weaker statement I guess? Hope I helped not just confused, DJ Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted April 5, 2020 Report Share Posted April 5, 2020 (edited) How many mounting holes? If 10 then you have the Heavy NewYorker diff. 11mounting holes ...same as a Plymouth ,dodge or DeSoto...except they will all be 2 pinion. All will have 10 spline axle shaft side gears. Rear end pinion yokes can be two spline sizes too. Saratoga's starting in later 1951 were now using the lighter whole six cylinder chassis even though they had the 331 Hemi...a hot rod Windsor so to speak. What ever diff you find that will bolt in the housing ....be sure you can fit your rear driveline yoke to it.10 or 16 spline. I had 2 Saratoga's and a couple 51/52 Imperials and NewYorkers. You have to really know your stuff on those Saratoga's doing rear end work. I think they put them together as they found parts. In Lynnwood Washington Pick and Pull there is a 331 Hemi 1952 Chrysler...it has or did have some nice grille chrome and the complete rear end in it too. They list it as a 1950 chrysler. Shown is a 10 bolt, 4 spider, 10 spline Chrysler barrel differential..what your's should look like... Edited April 5, 2020 by Dodgeb4ya Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 Ok. 10 mounting holes 10 spline axles Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 14 hours ago, DJ194950 said: The 47 is a 2 spider gears type of rear and according to the book changing from a stronger 4 gear type to the weaker 2 gear type is Not recommended. You also most likely have 16 splines on the spider ends of your axles. The 47 uses 10 spline axles. While is some cases the parts are removed from one gearset and installed in the other to make it work. If you have 10spline axles in good condition now the 47 3rd member complete may fit in your housing, and work fine. One other question is how many attachment bolts hold your 3rd. member to the main housing and also in the 47. They made a change in some rearends about these years. I cannot say 100 % because the book my does not cover this because of the stronger/weaker statement I guess? Hope I helped not just confused, DJ Thank you. I have a 10 spline spider end on axles. 10 mounting holes Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 Thank you. 10 spline on axle. 10 mounting holes. 4 spiders Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 Ok. I have found a 1947 plymouth rearend to put into the 52 Saratoga. My only question would be........I have to consider if the yoke from the 47 p. Will swap with the 52 Saratoga and vicy versy Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 I know that the 52 Saratoga is a 10 spline yoke. Not sure about the 47 plymouth? Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted April 5, 2020 Report Share Posted April 5, 2020 (edited) 7 minutes ago, Brian Coleman said: I know that the 52 Saratoga is a 10 spline yoke. Not sure about the 47 plymouth? The plymouth is 10 spline. Edited April 5, 2020 by Dodgeb4ya Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 (edited) Ok then I can just switch yokes and good to go? Edited April 5, 2020 by Brian Coleman Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted April 5, 2020 Report Share Posted April 5, 2020 1947 Plymouths are a 11 bolt differential... You said you have the 10 bolt ...that being the bigger full size Chrysler differential.. The Plymouth won't bolt in your housing. Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 (edited) No. I have found a complete rearend assembly from a 47 plymouth Edited April 5, 2020 by Brian Coleman Quote Link to comment Share on other sites More sharing options...
kencombs Posted April 5, 2020 Report Share Posted April 5, 2020 5 minutes ago, Brian Coleman said: No. I have found a complete rearend assembly from a 47 plymouth My oldest Hollander doesn't go back to the late 40s, but I would be very surprised if a Plymouth housing had the same spring mount spacing as a Chrysler in those years. None of them in the 50s show as able to interchange. Gears and bearings yes, housing no. Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 Dang. Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 Ok. Can I take ring and pinion out of the 47 ply and install into our original third member casting of the 52 ?????? Quote Link to comment Share on other sites More sharing options...
kencombs Posted April 5, 2020 Report Share Posted April 5, 2020 3 minutes ago, Brian Coleman said: Ok. Can I take ring and pinion out of the 47 ply and install into our original third member casting of the 52 ?????? I don't think so . Your 50 is likely a 4 pinion unit while the 47 Ply is most surely a 2 pinion. Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 That is correct. The 52 is 4 spiders and the 47 has 2 spider gears. But you are thinking that the complete guts will not fit?? Quote Link to comment Share on other sites More sharing options...
kencombs Posted April 5, 2020 Report Share Posted April 5, 2020 Never tried it but would not expect it to fit. The 4 pinion is much stronger and I wouldn't swap to a 2 pinion even if it fit. After all, your 4 is broken, and it is the better one. Quote Link to comment Share on other sites More sharing options...
Brian Coleman Posted April 5, 2020 Author Report Share Posted April 5, 2020 Ok. I got it. Humm. Just don't know quite what to think. Thank you very much for all your insight. I appreciate it Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted April 5, 2020 Report Share Posted April 5, 2020 Is your car Fluid Torque Drive or just Fluid Drive? A Hemi FTD would tear up a 2 pinion rear end under harsh driving. Quote Link to comment Share on other sites More sharing options...
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