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Old 08-03-2020, 05:52 PM   #1
1-PU70
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Brake line routing ?

Anyone have any idea why the rear brake lines on my 70 c10 has the rear brake lines routed on the right side. They start on the left (master cylinder) then cross over to the right side (under the motor) then go down the right side to the rear and back to the center. It would have used less material, less bends and I just think easier. Did GM have a reason they did it the long way. Just curious.
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Old 08-03-2020, 08:47 PM   #2
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Re: Brake line routing ?

my 67 is the same . when i replaced mine looking in the books i think the only difference was long or short bed so i think they are all that way
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Old 08-03-2020, 09:07 PM   #3
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Re: Brake line routing ?

Yes two wheel and 4 wheel drives are done that way
I figure it was there way of helping balance front and rear brakes in conjunction with the proportioning valve on with drum brakes and carried that setup through into disc brake setups
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Old 08-03-2020, 09:54 PM   #4
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Re: Brake line routing ?

With all of the lines, both brake and fuel going down the same side of the truck, it was probably easyer AKA cheaper, to assemble the truck. Two men, one in the front, one in the rear put the line bundle on the frame and tighten down the screws.
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Old 08-04-2020, 10:28 AM   #5
GASoline71
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Re: Brake line routing ?

ALL of these trucks came that way from the factory.

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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Old 08-04-2020, 04:59 PM   #6
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Re: Brake line routing ?

When I did the frame off on my 68 C10 LS swap I ran both fuel and brake lines down the drivers side. I built my brake lines. Used Ni-Copp lines.
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Old 08-04-2020, 07:00 PM   #7
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Thumbs up Re: Brake line routing ?

Brakes & fuel both run down the passenger side on these trucks.
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Old 08-04-2020, 08:09 PM   #8
Ironangel
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Re: Brake line routing ?

The reason is fire safety, there is a code that requires electrical and flammable be routed x number of inches apart. The electrical that must be located in proximity to flammables must meet a code and\or use a resistance sending unit designed for use in flammables. All that safety and put the tank in the cab right? The big three only did what they had to do via the codes written by suits that never had a busted knuckle...Most were good, some didn't make any sense...Here's one that stifled engineers I confronted in the auto plants for 40+ years..."Whats the difference between pipe and tube?"
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Old 08-06-2020, 03:44 PM   #9
GASoline71
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Re: Brake line routing ?

Quote:
Originally Posted by Ironangel View Post
Here's one that stifled engineers I confronted in the auto plants for 40+ years..."Whats the difference between pipe and tube?"
Exhaust goes through a pipe.

Fluids go through a tube...

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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