Front brake line connector
 

Can someone share a picture of what the front brake line connection looks like? I’m swapping in a 84 and up axle into my 70 K 10 suburban. The 70 uses a brass junction block to divert the brake line coming from the master cylinder to the right and left side. Of course the older body style trucks use what looks like a 3/8–24 brake line fitting and the 84 and up is 7/16. I’m having trouble coming up with the parts to get it to match up.

Re: Front brake line connector
 

Not exactly sure where you're talking about. Earlier trucks had the lines from the prop valve going to their respective sides. Square bodies moved the prop valve to the front x-member and went side to side from there. Now the 1970 being drum brake had a single line that came out of the prop valve and split down on the frame, so which fitting exactly. Going from the drum to disc, you'll have to swap out the proportioning valve anyways, so my guess is to get some long pieces of brake line and learn how to double flare or purchase the brake line kit for a 71 or 72 from Inline Tube and go from there

Re: Front brake line connector
 

There is a single line coming from the proportion valve that goes down to the inside of the left frame rail. There is a brass block that has 2 3/8 brake line fittings and also a hole in the middle of it with a banjo bolt that goes into the left brake line to the caliper. Does the later year proportioning valves have three fittings? One going to the rear and then one for each front wheel? I am pretty good at flaring, especially with the nickel copper stuff.

Re: Front brake line connector
 

Which proportioning valve do you think would work best? One from a 71-72 with disks or a 84 and up?

https://www.jegs.com/i/JEGS/555/6313...SABEgIM6fD_BwE

I found this one at Jegs

Re: Front brake line connector
 

It would depend on which master cylinder you are going to run. Different years ran the front brakes off the front section of the master and vice/verse