on my 66 i am swapping over to discs using 79 el camino spindles,i have already had ball joints turned down and everything goes together. i ordered a booster,master cyl,prop valve from ClassicPerformaceProducts and one of their pre bent front like kits for 64-66 that uses the original juction block on the frame and the front line does not work. anyone ever used this before?

Which front line? The one that crosses underneath the engine? Or the one that's supposed to go from the combo valve to the front left (drivers) caliper?

no, kit comes with 2 lines: 1 to go from the prop valve on the master cyl down to the junction block on the frame (front) and 1 to go from the prop valve to couple with the original rear brake line that was at the back of the juction block on the frame.

I am one of CPP's largest dealers and I have (2) 66's that are running CPP kits and the lines worked on both. What problem are you having?

Matt

So if I'm picturing this correctly:

1. Your new prop valve is mounted directly underneath your new Master Cylinder with some sort of custom bracket provided by CPP.

2. A line drops from the prop valve to hook up to the original 66 style junction block mounted on the frame. (In stock config, that junction block fed front and rear brakes.) Now you only want it to feed your front brakes, so you need to plug the hole in the junction block that used to feed the rear brakes.

3. you'll need a union fitting to connect the existing rear brake line (that was hooked up to the junction block) to your new "pre-bent" CPP line. (Additional bends not included)