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Brake Line Specs
#830653 Tue Feb 28 2012 07:41 PM
Joined: Feb 2012
Posts: 73
G
Glen_P Offline OP
Wrench Fetcher
Another question from a newbie... I want to change out my old brake lines. I'm looking at a roll of copper-nickle alloy. Can someone tell me what the original brake line OD should be and what the brake line nuts should be?

Thanks again!

Glen

Re: Brake Line Specs
Glen_P #830658 Tue Feb 28 2012 08:00 PM
Joined: Mar 2009
Posts: 786
P
Shop Shark
use steel lines. copper is a no-no
ron

Re: Brake Line Specs
padresag #830666 Tue Feb 28 2012 08:24 PM
Joined: Feb 2012
Posts: 73
G
Glen_P Offline OP
Wrench Fetcher
I agree copper is a no-no. But copper-nickel seems to be quickly replacing steel. (equal strength, easier to work with and doesn't rust). It is often marketed under Cunifer. It is DOT approved.

Re: Brake Line Specs
Glen_P #830695 Tue Feb 28 2012 10:08 PM
Joined: Nov 2004
Posts: 1,554
4
Shop Shark
Inline Tube will have what you need.



Tony Smith
4-5-6 Chevy Trucks
501 Scott Avenue
Kansas City, KS 66105
913-207-7789
4-5-6chevytrucks@sbcglobal.net
Photos: http://www.flickr.com/photos/4-5-6chevytrucks/sets/
Custom Parts: http://www.flickr.com/photos/4-5-6chevytrucks/sets/72157627022818563/
www.4-5-6chevytrucks.com
Re: Brake Line Specs
4-5-6 Chevy Trucks #830940 Wed Feb 29 2012 04:36 PM
Joined: Aug 2000
Posts: 346
O
Shop Shark
You can buy NiCopp by American Grease Stick (AGS) online here:

Advance Auto Parts

This is the best price I've found and I believe this is made in USA.

I've used a couple of rolls of 1/4" on my '54 2-ton project and have more ready to use on a '56 GMC 1-ton.

It's easy to flare and easier to bend and install than steel.

Last edited by OlBlue; Wed Feb 29 2012 04:40 PM.

'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton

No Room Left in Shop
Re: Brake Line Specs
OlBlue #830989 Wed Feb 29 2012 06:57 PM
Joined: Feb 2012
Posts: 73
G
Glen_P Offline OP
Wrench Fetcher
Thanks guys!

So I can assume that the lines are indeed 1/4".

Glen

Re: Brake Line Specs
Glen_P #830996 Wed Feb 29 2012 07:12 PM
Joined: Nov 2004
Posts: 1,554
4
Shop Shark
Size of the brake lines depend on the year, Series, Make, Model and wheel cylinders of your truck. Most common brake line sizes are 1/8", 3/16" & 1/4", along with the corresponding double-flare nuts, which are matched to the wheel cylinder female brake line opening sizes.

Last edited by 4-5-6 Chevy Trucks; Wed Feb 29 2012 07:13 PM.

Tony Smith
4-5-6 Chevy Trucks
501 Scott Avenue
Kansas City, KS 66105
913-207-7789
4-5-6chevytrucks@sbcglobal.net
Photos: http://www.flickr.com/photos/4-5-6chevytrucks/sets/
Custom Parts: http://www.flickr.com/photos/4-5-6chevytrucks/sets/72157627022818563/
www.4-5-6chevytrucks.com
Re: Brake Line Specs
Glen_P #830997 Wed Feb 29 2012 07:12 PM
Joined: Aug 2000
Posts: 346
O
Shop Shark
What year/model truck are you working on?

Almost everything before about 1960 was 1/4" lines. After that you start to see some 3/16" appear and with the advent of disk brakes, lots of 3/16" was used with special sized nuts on the master cylinder.


'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton

No Room Left in Shop
Re: Brake Line Specs
OlBlue #831000 Wed Feb 29 2012 07:18 PM
Joined: Feb 2012
Posts: 73
G
Glen_P Offline OP
Wrench Fetcher
It's a 1962 C10.

Re: Brake Line Specs
Glen_P #832296 Mon Mar 05 2012 04:44 AM
Joined: Oct 2007
Posts: 731
R
Shop Shark
@OlBlue, That's a real good tip on the copper/nickle line at Advance Auto Parts! Thanks!

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