Brake Line route

[Lethal Tendencies]

Does anyone have a diagram showing the brake line routing ? The front is more important. . Thanks. '68 C10 2wd

[OL SKOOL]

This is a 68 frame had drum brakes on the front but getting converted to disc.I don't know exactly what you need for pics so let me know.

[Accelo]

Are you staying with drum brakes? They interface where the tubing connects to the flexible line from the wheel cylinder is in the rear of the cross-member on the 67-70 trucks.

If you are converting to disk brakes? The factory interface where the tubing connects to the flexible line from the wheel cylinder is in the front of the cross-member on the 67-70 trucks.

Conversion kits, for 67-70, can go either way, but typically use the factory interface at the rear of the cross-member (the stock location for the earlier trucks)

Many of the kits come with flexible lines that do not fit well. They rub as the wheels are turned. Lowering a truck also changes the location of the wheel calipers. I went through three sets of hoses till I got one that worked. The ones that came in the conversion kit, the factory front hoses and the final working hoses from a 1971-72, 3/4T truck as these are longer than the 1/2T lines.

I also thought I would use the factory interface location at the front of the cross-member and incorporate the factory disc brake line for the later truck. Turned into a cluster as my cross-member didn't have the tabs for the front lines where they connect to the flexible hoses.
So I had to add them. A PITA. I am inducing a picture of the homemade conversion brackets just for fun.

It appears OL SKOOL is using the stock location of the 1968 lines (Rear of the cross-member) to convert to the disc brakes. In hind site that may be the better way to go than moving the lines forward like the factory did.

[FirstOwner69]

My '69 is a 3/4 ton, and I'm not sure how it compares to a 1/2. My thought is that they are probably similar until they get to the rear end. That said, these pictures taken during the teardown of my truck may be helpful.

Pictures are arranged front to back.

[FirstOwner69]

More...

[pjmoreland]

The original lines from the master cylinder on my 68 C10 were routed to the inside of the frame rail, as shown in the photo. They were anchored to the top of the frame rail with an "m" shaped clamp. I have since rerouted my front brake lines to the front of the crossmember after converting to disc brakes.

[FirstOwner69]

Originally Posted by pjmoreland

The original lines from the master cylinder on my 68 C10 were routed to the inside of the frame rail, as shown in the photo. They were anchored to the top of the frame rail with an "m" shaped clamp. I have since rerouted my front brake lines to the front of the crossmember after converting to disc brakes.

I have read that some were routed that way. Do you know more about what determined the different routings? Year? C10 vs C20? I am 100% sure that mine are original.

EDIT: Maybe to get the line farther from the exhaust? I had a '86 crew cab dually that would overheat the brake fluid when climbing a steep grade with the camper onboard. I'd pull over before heading downhill AFTER a climb. The brake line was close to the right side exhaust. I had a heat shield made and flushed the system to remove any captive air. OK after that.

[pjmoreland]

Originally Posted by FirstOwner69

I have read that some were routed that way. Do you know more about what determined the different routings? Year? C10 vs C20?

Not sure, but routing on the outside seems like a better design to me.

[FirstOwner69]

Originally Posted by pjmoreland

Not sure, but routing on the outside seems like a better design to me.

I agree for the reason I mentioned in the edit to my post that I added perhaps while you were typing.

[Lethal Tendencies]

Originally Posted by pjmoreland

The original lines from the master cylinder on my 68 C10 were routed to the inside of the frame rail, as shown in the photo. They were anchored to the top of the frame rail with an "m" shaped clamp. I have since rerouted my front brake lines to the front of the crossmember after converting to disc brakes.

So right now the previous owner has them on the outside of the frame , coming off the prop valve , and it doesn't look correct. when I say it doesn't look correct I think its because the way the lines were bent around the frame. My '70 had them on the inside of the frame. I agree wih what was stated about being close to the exhaust. So I ordered a line kit from CPP. I have front disc but manual master. I am adding new master and booster. Hopefully next week I will tackle this job.