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GM hydroboost master cylinder?

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Old May 6, 2014 | 08:18 PM
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GM hydroboost master cylinder?

So I got a Hydro booster on Ebay it said for a bronco, i got it today and the master cylinder bolt spead is wrong. i called the guy and he said to use a 69 carmaro one... Well i picked up one and the reservoir is really small. Does anyone know which one will work?
 
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Old May 6, 2014 | 08:32 PM
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Since all we got is a vague description, no part numbers, nor a link to the Ebay auction, take a read of this hydroboost article to see if it helps any: Chevy Astro Van Hydroboost Salvage - Car Craft Magazine
 
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Old May 6, 2014 | 08:34 PM
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If you have a front and rear disc brakes, I am running a 77-82 corvette dual disk. It has a 1-1/8" bore with 1/2-20" front, and 9/16-18" rear brake line ports.
 
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Old May 6, 2014 | 08:40 PM
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I think hydratech uses corvett MC.
 
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Old May 6, 2014 | 08:42 PM
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I'm just running the stock one on my 75. I elongated the holes to make it fit and it works great with discs all the way around.
 
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Old May 6, 2014 | 11:28 PM
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Originally Posted by HIO Silver
Since all we got is a vague description, no part numbers, nor a link to the Ebay auction, take a read of this hydroboost article to see if it helps any: Chevy Astro Van Hydroboost Salvage - Car Craft Magazine
Thank you for that article the unit I got looks just like the picture.
 
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Old May 6, 2014 | 11:31 PM
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Originally Posted by Fordworth
I'm just running the stock one on my 75. I elongated the holes to make it fit and it works great with discs all the way around.
Did you elongate the holes on the booster or the master cylinder? I kind of like that idea.
 
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Old May 6, 2014 | 11:57 PM
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I elongated the holes on the master. The booster has studs. Another important thing is to make sure the rod between the two is the right length.
 
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Old May 7, 2014 | 12:05 AM
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Originally Posted by lafermedavid
I think hydratech uses corvett MC.
Thanks I hadn't heard of them great info.
 
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Old May 7, 2014 | 12:06 AM
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Originally Posted by Fordworth
I elongated the holes on the master. The booster has studs. Another important thing is to make sure the rod between the two is the right length.
Thanks!!!
Dan
 
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Old May 7, 2014 | 10:13 PM
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After looking at the Hydratech website I found they also use an S10 master cylinder which has a 1 in bore the same as the factory one. Thanks for all of the info you guys have sent me.

 
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