Brake booster
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Here is the tech article about the conversion. It's written about '78 and '79 Bronco's but I think it has a lot of information that would be helpful to you (if you havn't already seen it).
https://www.ford-trucks.com/article/...d_Broncos.html
https://www.ford-trucks.com/article/...d_Broncos.html
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Elder User
Joined: Aug 2004
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From: NE Wisconsin
That article says you should not increase MC bore size unless you change to bigger calipers. Does the 350 have larger calipers yet? Is the 250 MC the same bore, just smaller bolt pattern? I would kind of like to hold the parts next to each other to see. Kubota, has anyone in the offroad foum done this?
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From: GA
your f-250 master cyl has the same bore size as the 350...just a smaller bolt pattern
when i did mine the lines were on the driverside originally, so i just had to put new fittings on the lines to fit the f350 master
this is on a 4x4...im not sure about a 2x4...is your truck a 4x4 or 2x4?
when i did mine the lines were on the driverside originally, so i just had to put new fittings on the lines to fit the f350 master
this is on a 4x4...im not sure about a 2x4...is your truck a 4x4 or 2x4?
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Elder User
Joined: Aug 2004
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From: NE Wisconsin
4x4
Review: use the 350 4x4 '79 booster and master and bend the lines/get new fittings. The rest should all be good?
Review: use the 350 4x4 '79 booster and master and bend the lines/get new fittings. The rest should all be good?
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The Booster has to be from a 78 F350 and up to a certain VIN# of 79 F350,as the booster mounting pattern and pushrod design are different than 78's.
You need the booster with fulcrum style push rod for the 78.
The later 79's pushrod went straight thru to the pedal.
You need the booster with fulcrum style push rod for the 78.
The later 79's pushrod went straight thru to the pedal.
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From: Coal Country, ND
Originally Posted by nebechanezer
i've read it should be a 2wd f350 booster/mc, even if you're putting it on a 4wd. i dont know if it makes a difference though.
Not to pirate this but, since I don't have cruise in my truck I would think that I would need a 79 F350 4x4 booster and master with out cruise, right????? Or will I need a 2 wheeler version, I personaly wouldn't think so but I haven't attempted this upgrade yet.
Thanks
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The diffeence between cruise and non-cruise with boosters is the brake pedal (possibly assembly) and the length of push rod because of the pedal difference.
The Non-cruise pedal has a bolt that holds the pushrod to it
The Cruise pedal has a nub that the pushrod slips onto and it held in position with a plastic collar and a clip in.
This allows for the brake light switch to move and activate the lights.
The Non-cruise pedal has a bolt that holds the pushrod to it
The Cruise pedal has a nub that the pushrod slips onto and it held in position with a plastic collar and a clip in.
This allows for the brake light switch to move and activate the lights.
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From: GA
Originally Posted by unrulee
I'm interested in this upgrade my self for my 79 250 4x4. From what I have read there is a difference also in that the booster can be made for a truck with cruise or not.
Not to pirate this but, since I don't have cruise in my truck I would think that I would need a 79 F350 4x4 booster and master with out cruise, right????? Or will I need a 2 wheeler version, I personaly wouldn't think so but I haven't attempted this upgrade yet.
Thanks
Not to pirate this but, since I don't have cruise in my truck I would think that I would need a 79 F350 4x4 booster and master with out cruise, right????? Or will I need a 2 wheeler version, I personaly wouldn't think so but I haven't attempted this upgrade yet.
Thanks