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| | | | Joined: Apr 2002 Posts: 2,168 A teacher, but always an apprentice. | | A teacher, but always an apprentice. Joined: Apr 2002 Posts: 2,168 | Hi all,
I’m looking for the brake line sizes for a ‘70 C10.
What line on the rear axle?
The line to the front frame cross members.
To the master/prop valve.
To the front wheels.
I got this truck disassembled and have no idea. Anyone have pictures for a fella?
Thanks. | | | | | Joined: Sep 2011 Posts: 2,951 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 2,951 | I installed a dual pot MC in my son’s 1968. No booster yet. New 1/4” copper/nickel lines to the front drums and 3/16” lines to the rear. I have an adjustable brake bias valve in the rear brake line circuit too. | | | | | Joined: Jul 2000 Posts: 2,193 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,193 | Do you have disc brakes up front? They were standard in 1971...probably an option in 1970.
If you have the disc brakes, the master cylinder and combination valve will guide you on the line sizes.
Gord 🇨🇦
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1954 1/2 ton 235 4 speed
| | | | | Joined: Sep 2011 Posts: 1,455 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,455 | Do you have disc brakes up front? They were standard in 1971...probably an option in 1970.
. Disc brakes were not available in '70, became standard in '71.
BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
| | | | | Joined: Apr 2002 Posts: 2,168 A teacher, but always an apprentice. | | A teacher, but always an apprentice. Joined: Apr 2002 Posts: 2,168 | I have converted the front to disc brakes, hence another reason why I don’t know what is exactly supposed to be there. | | | | | Joined: Jul 2000 Posts: 2,193 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,193 | So you should have one of these: https://www.carolinaclassictrucks.com/172-572.htmlThe diagram shows the fitting sizes. I took the combo valve with me to the auto parts store when I bought the lines to make sure I had the correct fittings.
Gord 🇨🇦
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1954 1/2 ton 235 4 speed
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