Larger front brakes

[Splangj]

My 69 RR has the Willwood front disc conversion I installed years ago. I’m pretty sure they’re 10.75 rotors. There’s plenty of room between the caliper and 15” rim. My 69 Dart I just sold had the 73 up 12” brakes the last owner installed, on 15” steel wheels. Does anyone know of a brake kit that fits my original drum spindle that’s 12 or maybe 13” rotors? I can’t help but notice that most calipers are tall, usually at least an inch over the rotor. I have manual brakes, with a Willwood master that has a 7/8” bore. It stops ok, but nothing like the Dart, which was also manuAl with a aftermarket master, not sure of the bore. Thanks for any help!

 

[Aron Gleason]

The wilwood kit fits on the stock spindles. In 12 in.

 

[kramer]

It seems like the its pretty tough to beat the factory 11.75 disc brake setup which is the way I would lean towards. This is the setup I have on my 69 Charger with a 15/16 manual brake master cylinder I also have the 11 inch rear brakes with a 7/8 wheel cylinder and it stops great and clears my 15 inch wheels.

 

[Darter6]

the factory 11.75 disc brake setup

Before the influx of aftermarket,many articles were written on using the 11.75'' from a Chrysler Cordoba.
Not All had them but they were optional along with 11'' rear drums. Sounds like your Dart was using them.

 

[Splangj]

With the bigger disc breaks on my dart, it used the 73 up LCAs I believe. The front end ended up being wider than the rear. Probably good for handling, but I thought looked very funky.

 

[Jesse6869]

On my stock drum spindle willwood makes a 14” kit but you’ll need at least 18”wheel. Would have to dig for part number but you could call them.

 

[Splangj]

I saw Summit sells a Willwood kit with a hair over 12” rotor that says it’ll fit under a 15” rim. They offer both a 4 or 6 piston caliper. it looks like it’s got everything except for the lines. Is there a noticeable difference in stopping power from 4 to 6 piston calipers?