Dentside Hydroboost
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Cross-Country
Joined: Sep 2019
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Dentside Hydroboost
I have a 78 F350 crew and was curious if anyone had out there had swapped hydroboost in place of the vacuum booster in a situation similar to mine: My cab is sitting on a 1992 F350 4x4 frame and is in line for its 12 valve. I would like to run the 92 brake master with a booster that would adapt the 78 brake brackets. Any ideas would be appreciated.
More Turbo
Joined: Sep 2017
Posts: 640
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I've done a few Super Duty vacuum and hydro conversions. I used CAD software to design a Super Duty brake booster conversion (and a vacuum SD conversion too for that matter). The parts I have are only compatible with 99-04 SD brakes though. May be worth considering! feel free to message me or check out the site. The braking improvement is unreal.
Attachment 281874
https://www.battlebornbrakes.com/ford-trucks-73-79
Attachment 281874
https://www.battlebornbrakes.com/ford-trucks-73-79
Thread Starter
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Cross-Country
Joined: Sep 2019
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Thanks for your response jacobj but as I mentioned, I am using the 92 frame, that includes brakes, differentials, etc.
I really have to know, did you intentionally hijack my post to pitch your company?
I really have to know, did you intentionally hijack my post to pitch your company?
Last edited by austincarnut; May 4, 2020 at 09:00 PM. Reason: s
Postmaster
Joined: Nov 2009
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From: SE Georgia
Get a F250 BOOSTER. You may have to redrill the holes. You will also need to upgrade to a Saginaw pump.
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Fleet Owner
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From: Brentwood,CA
Look at my gallery and the thread by me called hydroboost conversion. There is some instructions and lessons learned, ultimately the SD master cylinder and pushrod is the way to go from the get go. Remember these parts are from F-SuperDuty trucks not to be confused with the 99+ Superduty line of trucks.
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Postmaster
Joined: Nov 2009
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From: SE Georgia
The braking on a hydroboost is WAY better than any vacuum booster setup. This is an upgrade worth doing if you have a lot of power or bigger tires or tow anything.
Postmaster
Joined: Nov 2009
Posts: 3,189
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From: SE Georgia
Look at my gallery and the thread by me called hydroboost conversion. There is some instructions and lessons learned, ultimately the SD master cylinder and pushrod is the way to go from the get go. Remember these parts are from F-SuperDuty trucks not to be confused with the 99+ Superduty line of trucks.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
You may be alone thinking they were awesome factory. The brakes were sound and the Dayton dual piston calipers were good. However Ford undersized the booster, even the dual diaphragm was undersized. Even with a rebuilt dual diaphragm booster I was lucky to see 1100 psi max pressure and a ton of pedal travel. With the hydro you should expect 1800 psi, firmer pedal and much less travel for brake application.
More Turbo
Joined: Sep 2017
Posts: 640
Likes: 10
Your master cylinder and booster do not need to be off of the same vehicle as your axles by any means. Of course the booster and master needs to support discs or drums, etc. But mounting to the firewall is usually more of a concern than matching correct year of booster to your axles. I didn't intent to hijack your thread, just throwing out the only bolt in SD hydroboost conversion I am aware of. If you don't think that response was in good taste, I can remove it.