hydroboost questions
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Lead Driver
Joined: Mar 2008
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From: Near Los Angeles
hydroboost questions
I have a 75 F350 with a 300 (4.9). When I pull a hydroboost unit out of a 2000 ish F series, will that p.steering unit install on my bracket?
Or, can I simply swap out the reservoir?
Also, I know there are two different lengths of shafts that attach to b. pedal. Does anyone know the year they changed?
Thanks.
Or, can I simply swap out the reservoir?
Also, I know there are two different lengths of shafts that attach to b. pedal. Does anyone know the year they changed?
Thanks.
Senior User
Joined: Jul 2003
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250 restorer I'm sorry I dont know what your factory bracket looks like so I cant answer your question, words of encouragement I can offer you. I did the conversion on my 79
F350 4x4, my unit came off a 2000 F450, the large aluminum braket unbolted from the pump and then the pump bolted directly to the existing braket I had with the 3 bolts facing the pulley, the 79 master cyl bolted directly to the hydro unit and all fittings bolted right up, I had to shorten my brake pedal rod if I remember right it was about 1.5 inches so the brake pedal wasnt too high. Good luck its one of the best modifications you can do in my opinion.
F350 4x4, my unit came off a 2000 F450, the large aluminum braket unbolted from the pump and then the pump bolted directly to the existing braket I had with the 3 bolts facing the pulley, the 79 master cyl bolted directly to the hydro unit and all fittings bolted right up, I had to shorten my brake pedal rod if I remember right it was about 1.5 inches so the brake pedal wasnt too high. Good luck its one of the best modifications you can do in my opinion.
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Lead Driver
Joined: Mar 2008
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From: Near Los Angeles
Astro Van units?
I walked five j.yards today searching for a Ford h.boost unit in the years needed. I found ZERO. Five yards!!
But everywhere I look I see them in Chevy Astro vans. The rod seems real close to the length I need too. Does anyone know if they have the same power as those put in superduties?
Will the lines bolt up. Can I swap out Ford lines onto the unit?
But everywhere I look I see them in Chevy Astro vans. The rod seems real close to the length I need too. Does anyone know if they have the same power as those put in superduties?
Will the lines bolt up. Can I swap out Ford lines onto the unit?
Senior User
Joined: Sep 2005
Posts: 286
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From: Medford, Oregon
I seem to remember some discussion awhile back, here, I believe about the astro vans hydro working just fine. Also try here NORTH COUNTRY SPECIALTIES ®
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
If you need help PM me I can walk you through it. I also did a great full write up artice on here with pictures. FYI do not use a GM or newer model ford unit it will just **** you off in the conversion. Stay simple use one from a 1990 F-superduty get all the pressure hoses for that truck and a GM master cylinder. You will have to make the pushrod for between the hydroboost and the new master cylinder. To do this remove the one from your F-250 booster it fits perfect into the hydroboost. You will just have to shorten the ball end of it some to get the correct length. I have been running this setup for almost 30k now and it has been great.
Lead Driver
Joined: May 2007
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From: Costa Mesa, CA
Pics here and discussed somewhere in my crew cab thread
Hydrobbost swap in the 74 pictures by ChaseTruck754 - Photobucket
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Elder User
Joined: May 2002
Posts: 927
Likes: 3
From: Lake Point, Utah
My factory ford disc brake master cylinder fit on my Superduty Hydroboost just fine...no need to mess with another master unless you want that type.
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Lead Driver
Joined: Mar 2008
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From: Near Los Angeles
Well, I have not search 7 j.yards, and have not found one 1990 ish s.duty!! Not one stinking one!! If I knew whether I could use the Astro Van unit and swap over to Ford lines, that would be good. There are Astro Van units everywhere.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
Why's that? My 2 hydroboost units came off 2001ish stupid doodies (eBay = cheap!) and they don't **** me off...
Pics here and discussed somewhere in my crew cab thread
Hydrobbost swap in the 74 pictures by ChaseTruck754 - Photobucket
Pics here and discussed somewhere in my crew cab thread
Hydrobbost swap in the 74 pictures by ChaseTruck754 - Photobucket
Lead Driver
Joined: May 2007
Posts: 6,993
Likes: 15
From: Costa Mesa, CA
and your point is? As I said - my booster setup didn't **** me off at all! Then again - I love doing custom work...
And F-250restorer - I have heard of a lot of people running the astrovan booster. My buddy is putting one on his 76 but it's not done yet so I can't tell you how it works.
And F-250restorer - I have heard of a lot of people running the astrovan booster. My buddy is putting one on his 76 but it's not done yet so I can't tell you how it works.
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Lead Driver
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From: Near Los Angeles
And F-250restorer - I have heard of a lot of people running the astrovan booster. My buddy is putting one on his 76 but it's not done yet so I can't tell you how it works.[/quote]
Yeah, I'm going to pull one today. I figure I'll also take an extra mounting plate/bracket, and just cut some steel tube to weld where the new bolt holes will be, connecting one plate to the other. That'll back it off the firewall 1". But fabricating plans usually change. That's the fun of it.
I also saw that on Rock Auto I can get new lines for a 1990 S.duty, for about $15 ea. I've been watching videos on how to build your own lines, and it seems pretty easy, but I wouldn't know what fittings to order. I'm told the Astro and Ford units have the same size in/outlet fittings sizes, so I'll go the R.auto route.
NORTH COUNTRY SPECIALTIES ® is the link above in Bendogs post about using the A.van hydro.
Yeah, I'm going to pull one today. I figure I'll also take an extra mounting plate/bracket, and just cut some steel tube to weld where the new bolt holes will be, connecting one plate to the other. That'll back it off the firewall 1". But fabricating plans usually change. That's the fun of it.
I also saw that on Rock Auto I can get new lines for a 1990 S.duty, for about $15 ea. I've been watching videos on how to build your own lines, and it seems pretty easy, but I wouldn't know what fittings to order. I'm told the Astro and Ford units have the same size in/outlet fittings sizes, so I'll go the R.auto route.
NORTH COUNTRY SPECIALTIES ® is the link above in Bendogs post about using the A.van hydro.
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Lead Driver
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From: Near Los Angeles
I pulled a hydro from a 94 Astro van today. I also went on R.auto and ordered the p.steering lines from a 90 s.duty. Hopefully they will bolt right up. While I'm waiting I'll work on the braket.
Since the p.rod is about an inch too long, I was thinking about taking the break pedal from the astro van, and just cutting off the section where the rod attaches, and welding it on the back side of the pedal. That seems like an easier method than trying to move the unit away from firewall one inch. Any ideas? While I do have grinders and a wire feed, I don't really have the tools to machine a bracket.
Since the p.rod is about an inch too long, I was thinking about taking the break pedal from the astro van, and just cutting off the section where the rod attaches, and welding it on the back side of the pedal. That seems like an easier method than trying to move the unit away from firewall one inch. Any ideas? While I do have grinders and a wire feed, I don't really have the tools to machine a bracket.
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Lead Driver
Joined: Mar 2008
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From: Near Los Angeles
making lines
I was doing research, trying to understand how to make lines for the h.boost if the s.duty ones don't fit. I found some photos from a guy who converted a 74 bronco to the Astro h.boost. Even though I read the write up, I couldn't follow. Can someone explain how to do this? Did he simply cut the hard lines, flare them, and put on compression fittings?
<a href="http://s659.photobucket.com/albums/uu316/bobbyrogue/?action=view&current=astrovanlines.jpg" target="_blank"><img src="http://i659.photobucket.com/albums/uu316/bobbyrogue/astrovanlines.jpg" border="0" alt="Photobucket"></a>
<a href="http://s659.photobucket.com/albums/uu316/bobbyrogue/?action=view&current=linesatsbox.jpg" target="_blank"><img src="http://i659.photobucket.com/albums/uu316/bobbyrogue/linesatsbox.jpg" border="0" alt="Photobucket"></a>
<a href="http://s659.photobucket.com/albums/uu316/bobbyrogue/?action=view&current=astrovanlines.jpg" target="_blank"><img src="http://i659.photobucket.com/albums/uu316/bobbyrogue/astrovanlines.jpg" border="0" alt="Photobucket"></a>
<a href="http://s659.photobucket.com/albums/uu316/bobbyrogue/?action=view&current=linesatsbox.jpg" target="_blank"><img src="http://i659.photobucket.com/albums/uu316/bobbyrogue/linesatsbox.jpg" border="0" alt="Photobucket"></a>