A Body Disc Brake Swap 101

hwp said

I have done the swap on B-bodys before, but this is my first A-body swap. I am lucky, as I have a 74 Duster I am swaping from. I have everything installed. I moved the dist block from the duster and spindels and upper arms. However. the sway bar on this car is after market so I had to mount the cal to the rear. Done this on B-bodys. But on the B-body conversion. I had to use a flex line off of a diplomat or something (cant remember) What is the best line to use on this type of swap. The port on the cal is now closer to the hard mount point for the hard line. and you dont want to crimp or rub the line on the tire or any part of the front end. Any Ideas?

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Actually, when the caliper is at the 11 o'clock position and the line enters the bottom of the caliper, The flex hose is routed diagonally across in front of the shock.
When the calipers are positioned at 1 o'clock and the line enters the bottom ( as it should ) the flex hose could be stretched at full turn. Others have suggested a longer hose from M-body.
First time I did this swap was back in the 80s. No internet help then. I used the correct a-body hose and carefully adjusted the bend in the short metal portion of it just enough to prevent stretch and not rub the wheel.
My mopar mentor suggested I reroute the cars hard line to meet the retainer tab from the top , then attach the line from the bottom. That probably would have worked too. Rerouting those metal lines ain't easy though.