Getting ready to put brake lines on our 47 1 Ton. What size would be best to use? 1/4 or 3/16?? We put a Mustang dual MC on with ECI front brake disk kit using the 1980 GM Caliper. NAPA sells this easy to bend tubing so I thought we could do it ourselves and save some ?? Any help is greatly appreciated...

CJC

 

Stock size for that truck is 1/4", but that was for a 4-wheel drum setup, so you'll have to take that into account. Hard line routing isn't that complicated, so bending up the lines isn't really that involved.

What size are the fittings on your calipers and master cylinder? They're going to be your limiting factor in all this.