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#891008 - Sun Oct 21 2012 08:56 AM 1969 dual MC in a '65 c10 - brake rod?
Woogeroo Offline
Socket Breaker
Registered: Sat Feb 02 2002 12:00 PM
Posts: 5483
Loc: Cybertron

photos, here

Howdy folks.

I have a 1965 c10, but it has a 1969 dual pot, power brake master cylinder on it.

Below is a photo of my brake rod that connects from the brake pedal to the MC assembly.

This brake pedal push rod is from a 1965 Chevrolet C10 pickup(at least, that is what it came off of) is 8 5/8 inches long from the round end to the threaded end.

7/16 - 20 thread.

My question is this... is there a '67-'72 brake pedal rod that is longer, but will fit in the same place?

A lot of stuff on my truck is from different years, etc..

Thanks a bunch for any information.

-W


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#891758 - Wed Oct 24 2012 11:21 AM Re: 1969 dual MC in a '65 c10 - brake rod? [Re: Woogeroo]
Woogeroo Offline
Socket Breaker
Registered: Sat Feb 02 2002 12:00 PM
Posts: 5483
Loc: Cybertron

Here are some things I found out on other forums :

I measured an assembled 71 brake rod and it is 10" end to end as measured on the outside. Hole spacing is 9 1/4" with approximately 7/16" thread engagement. Thread is 7/16-20.

Power brake pedal is a lot lower then manual brakes and the 67-72 power brake rod is the same length from the many trucks that I have had apart.

There are a couple of different lengths on the booster mount but I am not sure if this will affect the pedal height.

-JimKshortstep4x4

----

I think what you'll have to do is get a threaded coupler and a piece of allthread and make it longer. You run into a similar problem when you put a 73-87 C20 booster on a 67-72.

airdale94

Woog note: American Classic has these for sale or you can assemble from your favorite local hardware store and cut to fit.

----

-W
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#892021 - Thu Oct 25 2012 07:53 AM Re: 1969 dual MC in a '65 c10 - brake rod? [Re: Woogeroo]
3B Offline
Shop Shark
Registered: Wed Nov 09 2005 12:00 PM
Posts: 4906
Loc: B. C. Canada
Hy Woogeroo, are you saying that you feel your pedal is too low (close to the floor), or are you say there is too much movement before braking action starts? Unfortunately most of the time the length of a given part number of brake pushrod is not mentioned in the part description, so one must look around for different lengths. When swapping components between body styles, there may be no "correct length" factory part, as someone has suggested making up a custom length rod that will place the pedal at a height you're comfortable with, and allow the master cylinder piston to return to its at rest position with a bit of clearance, could be your best solution, hope that helps.
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#892027 - Thu Oct 25 2012 09:05 AM Re: 1969 dual MC in a '65 c10 - brake rod? [Re: Woogeroo]
Woogeroo Offline
Socket Breaker
Registered: Sat Feb 02 2002 12:00 PM
Posts: 5483
Loc: Cybertron
years ago, I had the rod(mentioned and linked above) in there once... adjusted it out too much and it popped off the brake pedal end when driving it. Ooops. very skeery. Good thing I put that E brake system on there!

So, I made one in machine shop class and cut it to fit. That one had been on there for years.

Last weekend I had a major panic stop on a freeway and mashed the pedal so hard it bent the stainless steel rod I had made. YIKES.

So, I put the other one back in there... seems to work so far, I understand more about the whole system now than I did the last time...

My struggle has been the fight of getting enough thread on the brake pedal end to be safe and to make the stoplight switch engage and disengage properly.

I'm just looking for options, idears.

Thanks for the reply 3B.

-W
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