Brakes The Ultimate 4-lug/5-lug Brake Conversion/upgrade Thread

I was quoted less that $50 each for reman Cobra Calipers (wholesale) today from a Ford dealer, is that possible?

I need to start my upgrade package. Not quite clear on the other stuff yet, Im still learning.

^^^^ what year? Core required? ^^^^

Any info on Svo rear discs? I got practically everything but it seems no one uses it.. so hard to find info. Just wondering if they are any good or no or should I sell and get something else?

Ill be running 04 Cobras up front. I have everything needed for the rear I think, will need to buy pads but that's it. Got the brackets, calipers, lines, e brake cable, rotors, and a Svo master as well. Also have the 5 lug axle shafts as well as the whole svo rear end if I wanted it. I plan on just swapping everything to a stock fox 8.8 that has 3.73 in it.

I converted my '88 LX as follows:
A '95 Cobra donated front rotors, calipers, hub & spindles, rear axle complete.
Also purchased: New 1" bore M/C (93 Cobra), Wilwood prop valve, set of steel '95 Cobra flex lines for the rear calipers, set of '87-93 steel flex lines, MM "prop valve eliminator kit" MMBAK-6, the 3-2 port conversion MMBAK-3, and a pair on new brake hardlines for the rear axle.

I made the .330 tall spacers for the front hubs to Fox ball joints. Bolted up the new stuff, and used the Fox flex lines. They attached to the Cobra calibers with the bolts that came with the calipers with no issues at all. I'm considering some type of tie-back on the driver's side, as they will lightly rub the tire on a hard left turn, but they're Russel, so they're pretty tough.

I used the stock '88 booster. The '93 Cobra M/C bolted right up. No slotting any holes, no blacksmithing the shock tower. (The '93 Cobra M/C seemed the best compromise for my application. One thing to consider in the brake discussion is overall vehicle weight. Foxes are a few hundred lighter than SN's on average. Besides someone beat me to the one in the donor car.) I pulled the factory prop valve off, connected the 3-2 conversion kit directly to the lines that formerly connected to the bottom of it, and moved on to the rear.

I took the stock '95 axle hard lines, cut the flare off at the "tee" end as short as I could, slipped on a compatible fitting for the Fox body tee, and re-flared them. I used new '95 stainless flex lines on the wheel ends and bolted them up to the Cobra calipers. One of the brake tubing companies makes the hard lines already done. Classic Tube maybe? I found this out AFTER I borrowed, broke, and replaced a friend's double flare set.

Being both lazy AND cheap, I was not about to fork over $2600 for the K kit, nor was I going to spend a month of weekends pulling crap off in junkyards. I bought the totaled donor, stripped what I wanted in the comfort of my own driveway (WITH air power), and parted out the rest. I actually made money on the car! Yes, I got lucky that it WAS a Cobra, but you could do the same with ANY '94-'99 Mustang. There are no adapters, cut/welded/machined/modified/redneck engineered parts in the system. I am still experimenting with front/rear proportioning, and will consider pad and rotor upgrades as things wear out. As of now when I stomp the pedal the car stops N-O-W.

Pictures or further details on request.

Noobz347 said:

That's the portion I always wondered about. I hear mixed reviews with the OEM booster and I LOATH the thought of having to beat on towers etc. So brakes work well for you? No spongy feel or hard pedal?

...and by all means... post the pics!

Click to expand...

Modulation is as good as stock. But bringing the car down from double digits is a real hoot! Pedal travel is acceptable from light to max pressure. I think the fact that there are no rubber lines anythere in the system firms up the pedal considerably. I just realized I don't really have any pix of the front brakes. I'll get some in the next day or 2. In fact, this shot of the rear was back over the winter. LOTS of parts have been added since. View attachment 72252

Took me a while to get around to the pix...
Here's the RF corner. Fox flex lines with bolts that came with the calipers.
This is the body-to-axle flex. Fox part.
Underhood shows manual prop valve in typical spot.

Can 07 wheels be used with 94,95 spindles.

http://www.stangnet.com/mustang-for...h-axles-and-stock-sn95-brake-brackets.859972/

This is my build thread on how I made SN95 brakes work with fox length 5 lug axles. Hopefully this can help people out who don't have the money to shell out for the North Race car brackets.

im using 91 v8 fox brakes on my 86 4 cyl. what hydro boost and mc should i run?

I've been reading and I'm confused. I want to install the sn95 front spindles and rear axles 5lug disk all around
Which wheels will work with this set up on a 1990 vert.?
Does this wheel work on all 4 corners: 17X9 backspace: 6" Offset: 25mm deep dish
245/45/17 front 265/45/17 or 245/45/17 rear

see link:
http://www.americanmuscle.com/chrome-deepdish-cobra-17x9.html

Thanks

90silverstang said:

I've been reading and I'm confused. I want to install the sn95 front spindles and rear axles 5lug disk all around
Which wheels will work with this set up on a 1990 vert.?
Does this wheel work on all 4 corners: 17X9 backspace: 6" Offset: 25mm deep dish
245/45/17 front 265/45/17 or 245/45/17 rear

see link:
http://www.americanmuscle.com/chrome-deepdish-cobra-17x9.html

Thanks

Click to expand...

The old K kit called for 17's with a 5.75 backspacing. The 6" would probably be good if you use SN-length rear axles. I would bet you'll need to roll the lips to clear those tires. If you are lowered, even more so. If you use a Fox-length axle, the 6" offset with those tires will probably rub on the inside. I used SN length axles with the 17x8's and 245/45's. No rubbing anywhere.
In the fronts, it could be a bit close to the strut, but you would have to put them on and check ALL the clearances to be sure. I put a pair of steering rack limiters on mine, and my wheels are 17x8 with 5.75 backspacing. I'm running Eibach Sportlines, so the car is pretty low. Those wheels a er sharp! I hope you make them work.

Can anyone identify which setup is on mine as I have no idea. Wheels are 17 x 9 with 245/45 tires. Sorry about lousy pic, it's been raining all day. If a better one is needed I'll try again in the am. There is a 1/4 spacer on rotor, haven't measured the wheel offset yet. Even with the spacer wheel rubs control arms on hard turns slightly. Trying to figure what I'm working with prior to replacing anything or new brakes, wheels etc.
View attachment 133443