Need detailed pics of front brake line routing
 

Got my stainless brake line set yesterday for my '72 and am having a heckuva time trying to figure out where all the front brake lines go. Rears are done and the front-to-back line is sitting in place. But I just can't figure out the front and having long ago stripped off the old stuff with reckless abandon, I don't have anything for reference.

Anyone happen to have detailed pics from their own build that they could share? Or anyone willing to take some pics for me? I really thought I'd make some progress on it this weekend, but I'm stuck.

Thanks,
Brent

Re: Need detailed pics of front brake line routing
 

stand by...taking some for you now!!!

Re: Need detailed pics of front brake line routing
 

Waiting patiently. THANK YOU in advance! I fell like I've tried every possible combination and nothing makes sense. Probably doesn't help that the brake hoses I ordered from LMC two years ago don't come close to fitting in the holes in the brackets on the crossmember, so I'll be ordering some stainless lines from Inline Tube at my earliest convenience. Without the hoses in place, it's even harder for me to visualize where thing should go. (I work a LOT better when I can see things in place rather than just imagining.)

Re: Need detailed pics of front brake line routing
 

hope these help...let me know what else you need....

Re: Need detailed pics of front brake line routing
 

I think those will be a HUGE help. I'll know for sure tomorrow. Thanks again! :)

Re: Need detailed pics of front brake line routing
 

Just went out and in the warm glow of the security light in the driveway I was able to get the two lines from the front calipers / hoses routed. That leaves me with three lines.

I know I need to get a tee fitting as seen in your second pic. One of the three remaining lines will go from the tee up to the prop valve, right? Am I correct in assuming that the front brake lines go to the front fitting on the prop valve and the rear brake lines go to the back?

What I'm left wondering about are the two remaining lines. I'm assuming both are for the rear brakes, one of which will connect to the front-to-back line and run across the crossmember, and the other will connect that one to the prop valve. Correct? Are these connected to each other with just a union?

Thanks again!

Re: Need detailed pics of front brake line routing
 

Bump. Anyone know about the fittings between the lines? Would like to get started on this ASAP before much more of the day goes by. Thanks! :)

Re: Need detailed pics of front brake line routing
 

Ok, got the fittings sorted and know where all the lines go. But one last important question regarding the front-to-back line. Look at the pic below and tell me if you see something wrong.

I don't have anything clamped into place yet, so the angles may be slightly off. But that odd curving of the long line doesn't seem right. Obviously the angle doesn't match up with the cross-frame line (wire-wrapped line to the left). Does anyone have a photo of this particular section of brake line "in action" so I can see what it's supposed to look like? The curves make no sense and while it's trivial to straighten it out and make it line up, I want to do it right. I just don't see anything that it should be curving around and it doesn't make sense.

Thanks again!

Re: Need detailed pics of front brake line routing
 

These are not the best pics in the world but here are some shots that may help you. Mine is a 72 and I bought the Inline tube kit. It was exactly like stock and routed the same as original.

Re: Need detailed pics of front brake line routing
 

A couple more that may help. On a stock disc brake truck the front brake lines run forward under the motor mount and loop around to a bracket where the hose attaches and is held by a c-clip. The line actually goes forward and is in front of the A-arm. On the drum brake trucks these lines went to the rear of the A-arm. Also the lines (in 72 at least) ran down from the proportioning valve on the outside of the frame.

Re: Need detailed pics of front brake line routing
 

Those pics will certainly help, Mike. Thanks!

I've decided that I really need to get the correct clips to hold everything in place before I worry too much more about this. The brake hoses I bought a couple years ago from LMC don't come close to fitting through the hex-shaped holes in the brackets on the crossmember, so tomorrow I'm ordering a set of braided stainless hoses from Inline Tube, along with the clip set.

Re: Need detailed pics of front brake line routing
 

That's what I did but I got the stock rubber hoses. It's good quality stuff. The clips are not exact but close enough and work well. The only thing it did not come with was the c-clips that hold the hose in the bracket but they may have them available, I'm not sure. I reused my old ones.

Re: Need detailed pics of front brake line routing
 

Good to hear. I've got the C-clips already (new, came with these LMC hoses that don't fit) but need the frame clips to hold everything in place. Hope the stuff can get here by Friday so I don't lose another weekend of working on the project.

Re: Need detailed pics of front brake line routing
 

Sorry....just getting online today....looks like you got things all sorted out...welll...sorta!!!LOL

Re: Need detailed pics of front brake line routing
 

Attachment 466271

Attachment 466272

The rear lines should line up fairly flat. These are from a 72.

Re: Need detailed pics of front brake line routing
 

Thanks, John!

Re: Need detailed pics of front brake line routing
 

Old thread, but I wanted to pull it back up to say thanks for the pics. I was scratching my head on a 70 I am working on for sure. Got the frame bare, so I had no reference. I have some issues to work out since it has a 81 cross-member, but nothing major.
I do need to know where to find the junction block for the front 2 lines though. Don't see that in LMC.

Re: Need detailed pics of front brake line routing
 

Good thread here.

What size tube are the front lines? 3/8"?

Re: Need detailed pics of front brake line routing
 

Old thread, but these are great pics. I'm about to need them as I swap my old '70 cross member out for a '72 and brake hardware.

Re: Need detailed pics of front brake line routing
 

These pics have been a life saver, thanks guys! :metal:

Re: Need detailed pics of front brake line routing
 

I believe that curved end shown where the two lines (with red caps on them) goes to the rear by the rear axle, where the hose attaches to the hardline.
Ben

Re: Need detailed pics of front brake line routing
 

That would have been helpful six years ago. :lol: (It's long since been sorted, but thanks!)

Re: Need detailed pics of front brake line routing
 

I was running my lines the other day and I just came across this thread now.

I notice one member has the lines run inside the front frame rail on the drivers side (with headers) and the other has them run outside the frame rail. Anyone know if there are any heat related issues with running inside the rail?

Re: Need detailed pics of front brake line routing
 

I certainly wouldn't run them right next to headers, but that's just me. The brakes are the most important system in your vehicle.

Re: Need detailed pics of front brake line routing
 

I read that some models had the lines run inside the frame from the factory, so when routing mine I played with both inside and out. I determined inside may be fine for exhaust manifolds but my headers run right next to the brake lines if they are on the inside of the frame.

So long story short, I routed mine on the outside to avoid header heat.

Re: Need detailed pics of front brake line routing
 

This is where I am at. My brake lines are right on my headers on the inside of the frame. I wonder if there are pre-bent lines I can buy which take them around the outer frame??? I am interested in knowing how you did yours???

Re: Need detailed pics of front brake line routing
 

I know this is an old thread, but how close will this be to a 1971 C10? The reason I ask is that I have a 1960 Suburban and bought the stainless steel brake line kit from CPP and I'm having a heck of a time figuring out how to run them.

They sent me some pics, but I think it was a '71 as the lines run outside the frame rails, it appears. On my '60 they have to run on the inside and they confirmed that. I finally figured out which vertical line is the front and which is the rear.

Part of my issue is I don't yet have the master/booster/proportioning valve assembly as I've been trying to wait until some already purchased parts are installed. I hate sitting on parts. I've also ordered the bracket from CaptainFab and thus not sure if the CPP master/booster is the way to go or just go with the ones known to fit with the Captain's bracket.

I think part of the confusion is that they don't appear to use the factory mount points, so everything seems to be loose. Hopefully I can also find a good way to secure these to the frame and/or crossbar.

Re: Need detailed pics of front brake line routing
 

The 67-72 lines are secured with clips that attach to the frame through holes drilled in frame without a separate fastener. You might look in the 60-66 C10 section for better info. As far as I know there are no differences in the long beds and the Suburbans. The 67-72 lines are run on the inside of the frame. Someone will correct me if I'm wrong but I don't believe anyone is making an exact repop of the original clips. (Photo show some originals, the two heavier looking ones in the center are the fuel/ brake line clips) The fuel line goes in the upper part of the clip and the brake line in the lower. On the rear of the front cross member the clips are different as the lower part is smaller for 3/16" line. Someone parting out a long wheel base truck should be able to save some clips for you, or go to the U-pull-it and look for a donor vehicle with the correct size tubing, or you can use any number of aftermarket clips or loop straps.

Re: Need detailed pics of front brake line routing
 

An old thread, but a life-saver! This thread and a few others have been instrumental in helping me install my Inline Tube SS lines today.

It makes more sense once a few of the lines are on, but would it have been too much to ask for Inline to label the lines for those of us who had a complete teardown with no pictures from 'before'??

Having now done this I'm sure a second time would be much easier to figure out, but some of the bending had me thrown for a loop until I saw the pictures on here. Thus far the new lines have gone on with only gentle nudging and bending in a few spots. I am only working on the rolling chassis right now so the lines to the master cylinder won't be hooked up till the cab is on so I won't be able to comment on the complete set-up till then. I've read the good-and-bad comments about Inline so I will definitely offer my opinion once it's all done. So far I have no complaints other than lack of labeling for the newbies like me!

Re: Need detailed pics of front brake line routing
 

Exactly what I was looking for, love this site!

Re: Need detailed pics of front brake line routing
 

My lines don't line up with the tab on the rear diff. It looks like it needs the bolt in tab using the diff cover bolt. Input please guys

1972 factory 2wd blazer. 12 bolt rear, confirmed it is the correct rear end.

Re: Need detailed pics of front brake line routing
 

Factory 1/2 ton 5 lug rears with coils should have this hose (Photo 1) and the lines should go here, (Photo 2) and the fittings should be 1/4" not 3/16". Lines that go to the tab on the cover are early 6 lug lines with 3/16" fittings.