Vintage Mustang Forums banner

Best Rear Disc Brake Conversion Kit 67 FB

14K views 11 replies 10 participants last post by  ylexot  
#1 ·
Who has experience with a rear disc brake conversion on their Mustang? I'm looking at making the switch to rear disc on my 67 "S" GTA Fastback, but I hate surprises - like buying a "complete" kit and finding out that I need to buy "this" or "that". I currently have power front disc and an adjustable proportioning valve. The master cylinder is for power front disc and drum rear. Kit/manufacturer suggestions please?
 
#2 ·
rear discs

In all the years we did mustangs, mostly the daily driver type, we recommended not wasting the $$ in rear discs, unless you add 2 sacks of sand in the trunk! The weight back there really isn't effective for the money spent. If you want better stopping, do what Shelby did- station wagon rear brakes- 10" X 2 1/2". They look neat, sometimes impress people, but if you look into the actual effectiveness of what your end result is, you can spend the money more effectively elsewhere.
We saw a lot of Versailles rears being put under mustangs for over $1000 and wondered why?
 
#7 ·
In all the years we did mustangs, mostly the daily driver type, we recommended not wasting the $$ in rear discs, unless you add 2 sacks of sand in the trunk! The weight back there really isn't effective for the money spent. If you want better stopping, do what Shelby did- station wagon rear brakes- 10" X 2 1/2". They look neat, sometimes impress people, but if you look into the actual effectiveness of what your end result is, you can spend the money more effectively elsewhere.
We saw a lot of Versailles rears being put under mustangs for over $1000 and wondered why?
True word/Logic that I have Voiced for years.

On the other hand we have to agree, the person building a show car with the bigger see through wheels like the looks of the Disc Brakes. I Do as well.

Right Stuff has a good rear Disc Setup at a fair price.

Dan @ Chockostang
 
#6 ·
I'm planning on going with the Street or Track 11.25" rear disc kit. Heard nothing but positive results from them, and if you go on their website you can see exactly how it's installed (very straightforward). I'd agree that you probably don't "need" disc brakes on a street car, but for me, they're easier to work on, look 100x better, and since I'm building a new rear axle, I don't have any brakes right now anyways.
 
#8 ·
Thanks - the main issue for me is safety. I want the stopping ability of a newer car. I live near DC. I will be driving in busy Washington DC area traffic that is always congested with idiots who have no concern for anyone other than themselves. One favorite tactic is to speed up, cut in front of you, then hit their brakes. I'd like to install heat-seeking missiles to deal with the idiots - decided to get better brakes instead.
 
#9 ·
Properly set up drums with a good prop valve will do about the same stopping power in the rear. Unless your going to put in a new rear with them, you probably won't see much, if any, stopping distance change. The fronts are what really do all the work.
 
#11 ·
Unless you're going for the "look" I think you're wasting your money. Better to keep that existing factory set-up in tip-top condition, get some good shocks to prevent nosediving, and some locomotive horns for the @ssholes in front.
 
#12 ·
One plus for rear disc is ease of maintenance. I'd much rather pull a bolt and pop in some pucks than to shoot springs across the garage even with the right tool. I do agree with the other posters though that performance will generally not be enhanced. Also because they were not originally designed in you need to consider your MC's capability and an adjustable prop valve so you can properly balance the system. Brakes are often treated as legos but really you have to consider the system as a whole. This is a safety issue.