Newer hydroboost on older truck swap

Daniel McCurdy

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Anybody used the 1999 or newer hydroboost on the 97 and older trucks. I know the newer ones are all metric but it seems the older 450 units are impossible to find or really expensive while the newer ones are everywhere and cheaper. I don't know for sure but it should just be a matter of getting the right hydraulic adapter to go from the metric to sae and enlarging a few holes with a drill. Even if it's a more difficult swap id rather do it for the ease of finding replacements and parts. So if anyone has done the swap I would like to know the details.
 

IDIoit

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the hoses are of your least concern.
the biggest issue is the mounting plate, and the pushrod from the booster to the master.

its been a while since i installed my SD hydroboost in my 63 ranchero, but i wanna sy they were all still SAE tube fittings.

got my hoses made up at napa

16825998_1667386589945109_4959036234370289952_o.jpg

44029883_2510508738966219_671174393317031936_n.jpg
 

Daniel McCurdy

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The mounting plate should be as simple as redrilling the holes in the proper loacation. Is the pushrod removable/ is there a way to adjust the length.​
 

u2slow

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I'm working at using 80's chevy hydroboost on my dodge... like @IDIoit says... its the same challenges about the mounting plate and pushrod. Some are angled, different length rods, wrong size eyelet, etc.

EDIT: I'm resorting to cut/weld on the pushrod.
 
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IDIoit

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EDIT: I'm resorting to cut/weld on the pushrod.

the one from the booster to the pedal is eazy peazy with a little fab..
im talking about the pin from the hydroboost to the master
 

u2slow

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The new ford/motorcraft ones come with the intermediate rod. Otherwise I get used ones paired with a master attached, so it's included.
 

IDIoit

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The new ford/motorcraft ones come with the intermediate rod. Otherwise I get used ones paired with a master attached, so it's included.
everytime ive bought a remanned unit, its never came with that intermediate rod....
ive bought several over the past few years....

OBS and SD alike :dunno
 

u2slow

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Right.... I think I knew that about remans and don't buy them
 

Daddyoh

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Anybody used the 1999 or newer hydroboost on the 97 and older trucks. I know the newer ones are all metric but it seems the older 450 units are impossible to find or really expensive while the newer ones are everywhere and cheaper. I don't know for sure but it should just be a matter of getting the right hydraulic adapter to go from the metric to sae and enlarging a few holes with a drill. Even if it's a more difficult swap id rather do it for the ease of finding replacements and parts. So if anyone has done the swap I would like to know the details.

The issue will be the length of the shaft on the Hydro-boost. They are not adjustable nor removeable for safety. I'm sure you can remove it but at your own risk. Rock Auto has hydro-boost check them out. Don't sacrifice safety on your brakes... So your wanting to install a newer hydro-boost on an older truck.
So you want to upgrade to a newer year hydro-boost. The main issue will be the rod length other than that it should be easy.
 
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IDIoit

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The issue will be the length of the shaft on the Hydro-boost. They are not adjustable nor removeable for safety. I'm sure you can remove it but at your own risk. Rock Auto has hydro-boost check them out. Don't sacrifice safety on your brakes... So your wanting to install a newer hydro-boost on an older truck.
So you want to upgrade to a newer year hydro-boost. The main issue will be the rod length other than that it should be easy.
with a lathe, its completely adjustable ;)
 

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