70 deville hydroboost

Natonia1969

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Hey guys, I'm looking into putting a hydroboost brake system on my 70 Cadillac deville. Aka "the Villian" I have noticed that when I look up regular brake boosters on Ebay that it says chevelle, camaro, nova. 9" booster also fits my car. So in theory the hydroboost set ups they have for these cars should fit mine. Has anyone ever used a brake booster from one of these cars to verify fitment? Or have hydroboost on their 69 or 70 Cadillac and can give me some tips? Thanks.
 

Cad Man

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I would cross reference a eldo with vacuum booster get that part number and see if your car takes the same booster. If it does you can get a 76 up eldo hydro boost for cheap and it should fit

Rock auto would be a good site to do that on.. not sure when theh came out with hydro boost. But 76 eldo for sure had it as a option
 

Natonia1969

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Good suggestion I'm sure a 76 Eldorado would fit. But rockauto only has a rebuild service for that part. Still looking but its good to know I'll probably be able to use the Eldorado set up from pump, lines, and booster
 

Natonia1969

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What my research has found is a guy with a 72 chevelle used a 76 Eldorados complete hydroboost set up hoses and all and it was a direct bolt in. Now I need to see if the 75 Eldorado uses the same brake booster as my 70 deville bc 75 and 76 Eldorados are the same car but hydro was used in 76. So hopefully...I should be able to use an aftermarket willwood hydroboost for a 72 chevelle and use Eldorado lines. Will let you guys know
 

Red98422

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Typical hydraulic systems (for HE) use standard JIC fittings. Not too sure on power steering...could always go to a hose supply for hydraulic equipment. They make tons of crimped fitting hoses cut and sized as you want them right on the spot.

Sorry I can’t be of more help on the booster situation, I do wish you the best of luck on your research. I’m considering a hydro setup as well, but I have a manual steering car so my routing and parts sourcing would be much easier
 

Darius

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I think a hydroboost that fits in a 72 chevelle will work. Should be able to order Eldorado lines but finding the exact part number Eldorado unit has been pretty difficult.
Getting "there" can become a chore, can't it.

Have you noticed that it is the small details that slow you down?

Best,

bro. d
 

gary kosier

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Bob Stone out in southern Illinois has been assembling kits for the GMC Motorhomes. I haven't done anything
but read on the subject. The units have differences, but are all pretty much interchangeable. The bracket between
the unit and the firewall are different and the rod from the pedal is different. A little welding takes care of that.
Just make new hoses to fit your needs. Also, remove the washers in the power steering pumpp that set the output
pump pressure.

Gary Kosier
 

Darius

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Congratulations!! Nice clean install!

How do you like the Hydroboost??

I went with a unit out of a Chevy Astro van. It isn't nearly as pretty as your unit (Hydroboost, of course) but hopefully will provide similar service. There are no kits to mount them on a 1950 Studebaker so we fashioned a bracket setup that worked - at least until it interfered with the driver's side valve cover. :sick: Plan "B" is in the works! :geek: It uses a mount that has been talked about here on the forum, one which moves things "up" the firewall for greater clearance.

I too went with a new WilWood master cylinder and am curious about your experiences.

Best,

bro. d
 

Natonia1969

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Congratulations!! Nice clean install!

How do you like the Hydroboost??

I went with a unit out of a Chevy Astro van. It isn't nearly as pretty as your unit (Hydroboost, of course) but hopefully will provide similar service. There are no kits to mount them on a 1950 Studebaker so we fashioned a bracket setup that worked - at least until it interfered with the driver's side valve cover. :sick: Plan "B" is in the works! :geek: It uses a mount that has been talked about here on the forum, one which moves things "up" the firewall for greater clearance.

I too went with a new WilWood master cylinder and am curious about your experiences.

Best,

bro. d
Its nice. It breaks well and looks good. I would have used your set up but, i got tired of fooling around. Installed directly in my car with no modifications except i had to put the brake lines on the other side of the willwood master bc it hit my wheel well. It was very expensive i will say that
 
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