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Rear Discs
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dels56
Posted 2023-11-25 5:54 PM (#632861)
Subject: Rear Discs


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Has anyone installed discs on the rear of a 56 Dodge or Plymouth?
I am not home in my shop and I do not have a lot to do today so I would do some more thinking about converting to discs. I do have AAJ on the front and have all new components on the rear except for drums. The drums are .030” over, obviously they have been turned at some time. I have not found anyone near me that has the equipment to fit shoes to drums so then I don’t have full contact. All that said, I do not like the braking action that I have with disc/drum the way they are.

Comments on your experience and success and pictures if you have.

Del
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1960fury
Posted 2023-11-25 8:32 PM (#632862 - in reply to #632861)
Subject: Re: Rear Discs



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There are plenty, or hundreds of disks on Ebay with various sizes and offsets with a 5x4.5" bolt pattern. You can pick about any fixed brake caliper that accepts the disks and fabricate a simple bracket. Not neccesarily welding required.

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1960fury
Posted 2023-11-25 8:34 PM (#632863 - in reply to #632861)
Subject: Re: Rear Discs



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I did that with a Wilwood brake about 25 years ago. Works like a charm up to this day. There are pictures here, that you will find using the search function
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Powerflite
Posted 2023-11-25 11:43 PM (#632865 - in reply to #632861)
Subject: Re: Rear Discs



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I recommend installing an 8 3/4 from a B-body into it first. Then drive it to see how you like it. You'll need to change the driveshaft and weld the spring mounts to it.

Edited by Powerflite 2023-11-25 11:45 PM
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mikes2nd
Posted 2023-11-26 2:48 AM (#632867 - in reply to #632861)
Subject: Re: Rear Discs


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I did the ford 8.8 posi out of a v8 explorer... its 3.73 though...
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Powerflite
Posted 2023-11-26 12:26 PM (#632874 - in reply to #632861)
Subject: Re: Rear Discs



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That's the dumb thing about the Ford 8.8. You can't change the gear very easily or cheaply. I tell people that do those conversions that they had better like the gear ratios because you will have to do another swap if you don't. With the 9" Ford & 8 3/4, at least you have a myriad of options and can change your mind easily.
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dels56
Posted 2023-11-26 12:47 PM (#632875 - in reply to #632861)
Subject: Re: Rear Discs


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Darn, I just notice I put this under the wrong heading. The above is all helpful but I am not changing the rear axle. It will remain O.E. I am unable to find a thread that is specific to a 56 Dodge with 11” drums, not Center Plane. Has anyone used AAJ for this conversion?
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Powerflite
Posted 2023-11-26 12:51 PM (#632876 - in reply to #632861)
Subject: Re: Rear Discs



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I didn't realize that AAJ made a disc conversion kit for the '56 Dodge 8 1/4 rear. Do you know what brake components it uses?
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dels56
Posted 2023-11-26 3:07 PM (#632879 - in reply to #632861)
Subject: Re: Rear Discs


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All I know about AAJ’s rear conversion kit is, he uses GM metric caliber.
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57chizler
Posted 2023-11-26 5:47 PM (#632884 - in reply to #632865)
Subject: Re: Rear Discs



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Powerflite - 2023-11-25 8:43 PM

I recommend installing an 8 3/4 from a B-body into it first.


^^^^^^^^
This.
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wayfarer
Posted 2024-01-30 4:25 PM (#633570 - in reply to #632861)
Subject: Re: Rear Discs



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...still curious as to the reason for not wanting to swap rear axle assembly ......
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dels56
Posted 2024-02-01 9:32 AM (#633593 - in reply to #632861)
Subject: Re: Rear Discs


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I have a number of reasons for not swapping the rear axle out. A) my car is a lovely driver, not a hot rod. B) in today’s city driving I want good braking, better than the current rear drums. C) my next project is to swap out the Powerflite for a Torqueflite that is ready and waiting to go in. D) then I will install the Coaxial Power Steering. By the time I get this done I will be too old to drive and then my grandson gets it.
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wayfarer
Posted 2024-02-01 4:09 PM (#633598 - in reply to #632861)
Subject: Re: Rear Discs



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I get it, sort of....does your PF still have the parking brake attached? When you change to a TF, unless you stay in the same vintage, you will then need to change the axle. Just seems easier to do that now before you give up driving. Best wishes.
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56D500boy
Posted 2024-02-01 6:51 PM (#633599 - in reply to #633598)
Subject: Re: Rear Discs



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I am Del's friend and have been helping him with accumulating parts for a A-466 cast iron Torqueflite swap, based on my A-466 swap into my 56 Dodge.

To that end, Del has acquired a rebuilt A-466 unit with PN 1854 124 that has the emergency brake at the end of the tail piece. That trans used to live behind a 392 hemi.

Since the photo below, it has been rebuilt.

My experience (and suggestions):

Hints for installing a cast-iron A-466 Torqueflite in a 56 Dodge with existing Powerflite

http://www.forwardlook.net/forums/forums/thread-view.asp?tid=73638&...





(DelsRebuiltTFscore_small.jpg)



(DelsTFPN1854_124.jpg)



Attachments
----------------
Attachments DelsRebuiltTFscore_small.jpg (164KB - 25 downloads)
Attachments DelsTFPN1854_124.jpg (107KB - 20 downloads)
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Apollo 61
Posted 2024-02-01 10:55 PM (#633602 - in reply to #632861)
Subject: Re: Rear Discs



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FWIW I have a complete disc brake rearend from
a 75 imperial still in car. 4.5 pattern $350 located in northern
California
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dels56
Posted 2024-02-02 1:53 AM (#633603 - in reply to #632861)
Subject: Re: Rear Discs


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Thanks fellows. I appreciate your input on the subject. What I get from all of this is, no one has installed discs on the tapered rear axle in a 55 or 56. I’ll let you know how I make out once I get to completion. I only work on my car/s in the summer as my wife and I spend the winters in a warmer climate. Completion could be this summer or next???

FYI. You won’t see a thread from me on the tranny swap as 56D500boy has a very detailed description of every twist and turn along with skinned knuckles in his thread noted above. I may start a thread on the trials and tribulations of swapping out the manual steering for the coaxial (when I get to it). Thank again.
Del
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