9" ford 5x5.5 drums to 5x4.5 discs? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-22-2012, 11:01 PM
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9" ford 5x5.5 drums to 5x4.5 discs?

Hello gents. I have a 9" Ford that I am going to have narrowed down and I want to switch from drum to disc brakes. I am going to switch out the stock axles for aftermarket axles so I can get to my desired pattern of 4.5 x 5.

I am trying to save money where I can on this project so I am trying to find out what disc brake set ups are out there on certain years and models of Ford vehicles, that I can rob from a junk yard (calipers, brackets, brake lines and possibly even rotors) to switch out the drum brakes for discs. Any suggestions on which vehicles might be candidates for this swap? If you need more information on the rear end let me know I will get it and post it. Any help would be greatly appreciated. Thanks.

Brent

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Old 07-23-2012, 05:31 AM
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Originally Posted by 31fordcoupe View Post
Hello gents. I have a 9" Ford that I am going to have narrowed down and I want to switch from drum to disc brakes. I am going to switch out the stock axles for aftermarket axles so I can get to my desired pattern of 4.5 x 5.

I am trying to save money where I can on this project so I am trying to find out what disc brake set ups are out there on certain years and models of Ford vehicles, that I can rob from a junk yard (calipers, brackets, brake lines and possibly even rotors) to switch out the drum brakes for discs. Any suggestions on which vehicles might be candidates for this swap? If you need more information on the rear end let me know I will get it and post it. Any help would be greatly appreciated. Thanks.

Brent
You can use the ones From a Ford Explorer, and maybe the Crown vic cop car. Speedway and a lot of other places sell the weld on brackets for cheap, use cheap/plentiful GM calipers and Crown Vic rotors. Used rotors ok, used calipers and hoses are a little dodgy.
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Old 07-23-2012, 05:40 AM
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Quote:
Originally Posted by 31fordcoupe View Post
Hello gents. I have a 9" Ford that I am going to have narrowed down and I want to switch from drum to disc brakes. I am going to switch out the stock axles for aftermarket axles so I can get to my desired pattern of 4.5 x 5.

I am trying to save money where I can on this project so I am trying to find out what disc brake set ups are out there on certain years and models of Ford vehicles, that I can rob from a junk yard (calipers, brackets, brake lines and possibly even rotors) to switch out the drum brakes for discs. Any suggestions on which vehicles might be candidates for this swap? If you need more information on the rear end let me know I will get it and post it. Any help would be greatly appreciated. Thanks.

Brent
One option:

A quick search got me Lincoln Mk VII Rear Disc Conversion Adapter Brackets. They use the Lincoln factory discs on the 9" rear end, all bolt on. IIRC the Lincoln disc brakes include a parking brake.

A kit for using the GM calipers (w/o parking brake) is Ford 9 Inch Bolt-On Rear Disc Brake Kit - Speedway Motors, America's Oldest Speed Shop.

Here is a list of threads here on Hotrodders that may help.

Good luck.

Last edited by cobalt327; 07-23-2012 at 05:48 AM.
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Old 07-23-2012, 06:09 AM
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I am using the Ford explorer because of the e-brake setup on those..fairly cost effective..Since i had a truck housing I did need to change the ends on the housing though..

Sam
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Old 07-23-2012, 06:55 AM
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stock axles 4.5

Depending on the width you want you might be able to use a bunch of stock pieces. some stock axles if you can match axle length to spline count. Ford 9 in have different axle bearing sized ends. the ones with what is called torino size are a bolt on for explores with the internal shoe parking brake, Mid 80's town car have lever parking brakes that use the calipers and I think they also are bolt on, same as explorer. . Disk brakes came on lincoln versailles 9 in rears, optional on mercury monarch. with the 4.5 pattern.. 70's lincoln continental optional with the wide 9 3/8 and 5 on 5, a regular size 9 pumpkin will fit into a 9 3/8 lincoln. I have put pieces to gether in a wrecking yard. Mustang 8.8 housing, Ranger 4.5 x 5 axles, and lincoln town car rear discs and calipers .
FWd Caddy and Buick rear calipers from mid 80's with parking brakes used to be part of some kits , I don't know if they will fit the brackers in the kit listed above.
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Old 07-24-2012, 07:46 PM
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Use the Ford Explorer disc brake conversion....$400 and its a bolt on with the E brake in the hat...great set up.
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