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Old 05-01-2017, 11:11 PM   #26
MASTERBrian
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Join Date: Jan 2017
Location: Wichita
Posts: 639
Re: Brake boosters

The booster is in, except for the lower two bolts. Apparently I'll have to stand on my head to get them tightened.

As for the pushrod, I cut the end off the booster pushrod, then threaded it with 3/8 16. I then opted for the clevis end vs the factory Heim style connection. My main reason for this was what I had and I didn't have a long enough, threaded, 7/16 20 bolt nor could I find a die to make my own. The clevis I found had a 3/8" rod, so even though the clevis end was 20 or 24 pitched threads, I threaded the other end to the 3/8 16, which now matches the pushrod going into the booster. I joined those two rods with a coupling nut threaded to match and locked it in place with a nut on either end. If I loosen the nut near the clevis, I can easily adjust the pedal freeplay then lock it back in place.

Obviously it needs some paint, imo at least, but so does the rest of the under dash. Just nice to finally have this step behind me.

I am somewhat considering looking for a longer 7/16 20 bolt or die and eventually creating an end using the factory bracket to pedal. If I do this, I'll drill out half of the coupling nut and run a tap into it to create the 7/16 20 thread to match the factory end. But that's just me being a bit anal and wanting to keep as much original as I can for ease later down the road.

Now if I can just get the rest of the lines finished, I'll have brakes. Next fuel lines and tank, figuring out why parking lights don't work and getting her registered and onto the road!
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Old 05-01-2017, 11:43 PM   #27
Captainfab
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Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
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Re: Brake boosters

The issue is that not all of the aftermarket universal boosters have the correct mounting stud pattern. If the correct booster is used, there are no modifications to my booster brackets needed.

Quote:
Originally Posted by rvrfoot View Post
I ordered amount from Captain Fab but the holes were off if you get a powder-coated you're going to screw up the powder coat I just got it raw steel rimmed the holes and then Rattle can black
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Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
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Old 05-01-2017, 11:46 PM   #28
MASTERBrian
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Re: Brake boosters

Quote:
Originally Posted by Captainfab View Post
The issue is that not all of the aftermarket universal boosters have the correct mounting stud pattern. If the correct booster is used, there are no modifications to my booster brackets needed.
Once I straightened up and used one from the list, it worked perfectly! I realize that wasn't pointed at me this time.
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Old 05-02-2017, 12:16 AM   #29
Captainfab
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Re: Brake boosters

And thank you for documenting your lengthening of the booster pushrod. I'm sure it will help many others.


Quote:
Originally Posted by MASTERBrian View Post
Once I straightened up and used one from the list, it worked perfectly! I realize that wasn't pointed at me this time.
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Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
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Old 03-27-2018, 10:19 AM   #30
LostMy65
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Join Date: Oct 2010
Location: Oregon City, Oregon
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Re: Brake boosters

Next on my 'To Do' list.
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66 C20 Service Truck:
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Old 06-16-2021, 12:28 PM   #31
russellrox
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Join Date: Jul 2014
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Re: Brake boosters

I’m having the same issue right now, never thought of theading it, do you have any more pictures of how you coupled to the factory push rod?
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Old 06-16-2021, 01:08 PM   #32
joesscamaro
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Join Date: Sep 2008
Location: Newport, North Carolina
Posts: 612
Re: Brake boosters

Here's my attempt at an under the cab brake set-up. Bought the pedal online, master is a spare I had laying around and had a 7" booster that I began to modify/mock-up. Still in need of the proportioning valve and master for disc/disc and to run my lines...but it's getting there.
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Old 06-16-2021, 10:49 PM   #33
Captainfab
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Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: Brake boosters

I do not know who that question is directed to but I answered your PM and here is the link to a thread showing another members method of the booster pushrod lengthening.

http://www.67-72chevytrucks.com/vboa...d.php?t=564518


Quote:
Originally Posted by russellrox View Post
I’m having the same issue right now, never thought of theading it, do you have any more pictures of how you coupled to the factory push rod?
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Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
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