Another Disc Brake Conversion Question
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Senior User
Joined: Sep 2002
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From: United States
Another Disc Brake Conversion Question
Hi!
I know everybody looks for a 73-79 donor for the disc brake swap. But what's wrong with swapping over the disc brakes from 68-72 like those found on 250s and Camper Specials? Wouldn't they be the same as the newer units?
Also, there was a post earlier about using Lincoln rear disc brakes as a bolt on for the rear. Would this require a special proportioning valve? Any other problems with this mod?
Thanks!
Larry
I know everybody looks for a 73-79 donor for the disc brake swap. But what's wrong with swapping over the disc brakes from 68-72 like those found on 250s and Camper Specials? Wouldn't they be the same as the newer units?
Also, there was a post earlier about using Lincoln rear disc brakes as a bolt on for the rear. Would this require a special proportioning valve? Any other problems with this mod?
Thanks!
Larry
Laughing Gas
Joined: Apr 2002
Posts: 869
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From: Apple Valley CA USA
Another Disc Brake Conversion Question
the lincoln swap mention earlier is not as straight forward as the post made it sound. the lincoln has a smaller bolt pattern (but bigger than other ford cars!) that won't work with 5 on 5 1/2 bolt pattern. unfortunately the rotor can not be redrilled and used on a truck axle as the axle will not fit into the back of the rotor unless you turn it down and then the studs will be right at the edge (not good). the only option would be to use the 5 on 5 bolt pattern that a lincoln has and either use adapters or GM wheels. i guess that is the reason these rear ends are so common in junkyards, they are about as useless as anything. as a side note i even thought about just using the caliper bracket and caliper and finding another rotor but the caliper actually hits the end of the axle when mounted on a stock truck axle. been there done that, wasn't really worth the effort. hawkrod
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Senior User
Joined: Sep 2002
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From: United States
Another Disc Brake Conversion Question
Thanks for the info guys. I think I'll shy away from the changing the rears then.
Anybody have any opinions on the other part of the question?
Larry
Anybody have any opinions on the other part of the question?
Larry
Senior User
Joined: Aug 2002
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From: Texas
Another Disc Brake Conversion Question
The lincoln rear disc conversion is not a direct bolt on, however with a little work it can be done. I used front rotors from a mid eighties f-150 4x4 and minor machining and it bolted onThe rotors maintain the correct bolt pattern of 5 on 5-1/2 bhc. Let me know and I will outline for you if you are still interested.
Post Fiend
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From: Brea CA
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From: Texas
Another Disc Brake Conversion Question
I am putting together instructions and pics that outline this swap for a couple of people on the site. It has been several years since I did mine so... I don't have pics readily available in a step by step format. I am also going by memory so I don't want to leave anything out. If someone has a set of the lincoln caliper brackets loose and send me some close pics it would help out a lot. My truck is together and it would require disassembly to show all the details. In the meantime I will sketch a few drawings. Kevin
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Joined: Jun 2002
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From: Amarillo
Another Disc Brake Conversion Question
[updated:LAST EDITED ON 14-Nov-02 AT 03:17 PM (EST)]MK
Are you saying that the 250 (front disc) set-up will not work on a 100?
I've got a F100 '67 and have found a '67-'72 F250 with power breaks and power stearing. Will it work?
Are you saying that the 250 (front disc) set-up will not work on a 100?
I've got a F100 '67 and have found a '67-'72 F250 with power breaks and power stearing. Will it work?
Laughing Gas
Joined: Apr 2002
Posts: 869
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From: Apple Valley CA USA
Another Disc Brake Conversion Question
[updated:LAST EDITED ON 14-Nov-02 AT 06:41 PM (EST)]would a picture of the caliper brackets still on the axle work? i still have the axles and parts here from my ill-fated swap. problem is you have to remove the wheel bearings to get the brackets off. hawkrod
Laughing Gas
Joined: Oct 1999
Posts: 1,165
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From: central Alberta
Another Disc Brake Conversion Question
Brett, the 250 set up has eight lugs as opposed to five for the 1/2 ton. Unless you really want to beef up your suspension to use the eight lug setup,wait and find a 73-79 F100/150 donor truck.
mike
mike