Stop in for a cup of coffee

Mattax said
You still on that kick? For the Polara? Have you run the numbers? What's that thing weigh? What's the swept area and diameter of the drums? Don't go throwing some disks on just 'cause you got them. You really want disks on that car, make sure they are going to be big enough to do the job. Compare the leverage on the brake master compared to an a-body, because that's going to impact the force needed from you foot on the pedal. Going straight to disk, its going to require a lot more force. Going to booster with disk, you want it not too sensitve or you'll lock up 'em up too easy. Then at least a prop valve, and maybe a hoild-off valve on the front like they did on the B-bodies early 70s. Those reduce front lock up on ice.
Try not to be another one of those guys in the Brakes subforum who don't understand what they did - 'cause we're talking brakes here - a little more important than most other modifications. Sorry for the hard talk man - I wait its coffee thread - I don't need to be. :D

You bring up valid questions and points. I appreciate it. I shall try to answer them.

You still on that kick? For the Polara? Have you run the numbers? What's that thing weigh? What's the swept area and diameter of the drums? Tikey brought it up again, so I decided to explain my thought process. First, the polara currently has 9 inch front drums. A little known fact is that the 73-76 A body disc setups use the exact same caliber, the exact same rotor, same ball joint, same upper control arm and same spindle as the much heavier B body cars. The only X factor is that on certain year B Bodies, the hose lengths are a tad different in length. Not a big deal.

As for the weight of the 64 Polara vs the weight of the A body this came off is surprising, the 64 polara 4 door curb weight as mine is optioned, 3263 lbs, the 74 Dart weighs 3315,
(numbers from the FSM) granted the dart had full power everything as the polara is all manual. Surely the 10.95 inch rotors will stop the polara better than the 9 inch drums.

I have all those valves and even an adjustable one if I need it. I will be be going from single manual master cylinder to a dual, power master cylinder. I'm actually following a long posted sticky on the subject on Moparts, which is where I learned it all interchanges. However, because I too was skeptical, I went and verified each via Chrysler's own parts catalogs from 1974.