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-   -   Brake Pedal Question ? (https://67-72chevytrucks.com/vboard/showthread.php?t=813901)

kens65fb 10-31-2020 12:41 PM

Brake Pedal Question ?
 
It has been mentioned a few times on this forum, that drilling a hole 1 inch lower, where the master cylinder rod connects, provides a better angle to the firewall booster, when adding power brakes.

My question is :

Is the brake pedal on a truck equipped with power brakes from the factory different than a non-power brake truck ?

Is the hole lower than a non-power brake pedal ?

The Rocknrod 10-31-2020 02:43 PM

Re: Brake Pedal Question ?
 
Quote:

Originally Posted by kens65fb (Post 8829690)
It has been mentioned a few times on this forum, that drilling a hole 1 inch lower, where the master cylinder rod connects, provides a better angle to the firewall booster, when adding power brakes.

My question is :

Is the brake pedal on a truck equipped with power brakes from the factory different than a non-power brake truck ?

Is the hole lower than a non-power brake pedal ?

They are different. If you have a "Factory" power brake firewall bracket (wedge) and hinge (mechanism) then no (extra) hole is necessary.
http://67-72chevytrucks.com/vboard/s...52&postcount=9
http://67-72chevytrucks.com/vboard/a...1&d=1325251543
http://i51.photobucket.com/albums/f3...o/DSCN2092.jpg

raylube 10-31-2020 04:44 PM

Re: Brake Pedal Question ?
 
Quote:

Originally Posted by The Rocknrod (Post 8829743)
They are different. If you have a "Factory" power brake firewall bracket (wedge) and hinge (mechanism) then no hole is necessary.
http://67-72chevytrucks.com/vboard/s...52&postcount=9
http://67-72chevytrucks.com/vboard/a...1&d=1325251543
http://i51.photobucket.com/albums/f3...o/DSCN2092.jpg

I don't think this answers kens65fb question because either power or non power brakes a hole for the push rod in the pedal arm is NECESSARY.

The Rocknrod 10-31-2020 04:54 PM

Re: Brake Pedal Question ?
 
You mean it's not unnecessary? :lol::lol:

PGSigns 10-31-2020 08:48 PM

Re: Brake Pedal Question ?
 
The angle is not what gets improved its the pedal ratio and the stroke of the rod.
Jimmy

Captainfab 10-31-2020 09:57 PM

Re: Brake Pedal Question ?
 
The '63-'66 truck brake pedal has the hole in the same location whether the truck came with manual brakes or factory power brakes. The different ratio for the power brakes was accomplished with the bellcrank assembly on the engine side of the firewall.

kaycee 06-17-2021 06:47 PM

Re: Brake Pedal Question ?
 
I'm guessing to drill 1" lower I would measure center to center correct?


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