Brakes Rear end swap

[Andresquintana.mma]

Hey everyone I have a roller mustang I’m selling 4 cyl conversion but the rear end has disc brakes and 4.10 gears. I’d like to swap it to my 93 mustang gt that has factory rear end, how hard would it be and is it worth it. Have to do it in about 2 days by myself. Any suggestions or advice would be great.

 

[Bullitt347]

What year is the roller?
It it the same size (8.8) as the 93 GT?

 

[Andresquintana.mma]

What year is the roller?
It it the same size (8.8) as the 93 GT?

Roller is an 89 and both are 8.8. My concern is the brake lines never done them before

 

[Bullitt347]

Swap out the brake lines from the donor car with the rear differential.

 

[Andresquintana.mma]

Swap out the brake lines from the donor car with the rear differential.

Where do they disconnect and how do I make the drums work on the roller

 

[Bullitt347]

Well, if you unbolt the 8.8 from the 93 with drum brakes...
And you unbolt the 8.8 with disc brakes from the 89
They will just direct swap over.
If you follow the brake line from the master cylinder to the rear differential, you will see that it attaches at/near the center section of the differential, usually offset to the drivers side.
You take the brake line loose at that junction.
Then it is just a matter of bolting everything up and bleeding the brakes.
You can even do this while leaving the wheels/tires on. It makes it easy to roll the rear differential from one vehicle to another.

 

[Bullitt347]

Although, on second thought, the E-brake/park brake cables may be different.
That may be the more challenging part of the swap.

 

[Andresquintana.mma]

Although, on second thought, the E-brake/park brake cables may be different.
That may be the more challenging part of the swap.

Thank you. Yeah on my roller w disc brakes the e brake is cut. Do I have to cut the e brake lines from the drum set up?

 

[Bullitt347]

No. You can take the time and effort and swap it over.

 

[Andresquintana.mma]

Little update. My brake line (rubber hose) from drum brake set up on the 93 rear end doesn’t look like it connects to the 89 (disk break) setup. Looks like two different threads. Anyone know if there’s a work around.
93 drum break rear end is out and 89 is hanging by the upper control arms. Looks like I may have to leave the disk breaks with the car.

 

[limp]

Your first pic is for single exhaust or 86 and older cars.....

 

[Andresquintana.mma]

Your first pic is for single exhaust or 86 and older cars.....

Damn ok. Is there an adapter that would work for this conversion and the other way around. Crazy that the 8.8 rear end w disk breaks bolted right up to it. Unless I bought the adapter a long time ago. Much appreciated though. The car is an 89 4 cyl conversion in the 1st pic.

 

[limp]

I just went through this converting my 83 to take dual exhaust.....
You will probably have to change out the brake lines...
Look at LMR's site... I think they have the kit for the body brake line and the housing....

 

[Andresquintana.mma]

I just went through this converting my 83 to take dual exhaust.....
You will probably have to change out the brake lines...
Look at LMR's site... I think they have the kit for the body brake line and the housing....

Thank you I appreciate it.

 

[limp]

So your second pic is the car you want to install the rear end into?
All you should have to do is install new lines on the rear end housing then... I think LMR has them for drum and disc brakes...

 

[AeroCoupe]

I typed up a couple short descriptions then decided to do a quick search and I think this will get you lined out on what all you need to swap between the cars:

https://lmr.com/products/fox-body-mustang-4cyl-to-v8-brake-line-conversion

 

[90sickfox]

Cur the end off the 93 line and use fittings amd a union to merge the lines. A good flaring tool will do this easily. Just need 2 fitting and a union block.

 

[Andresquintana.mma]

Thank you guys much appreciate it. Never really done breaks before. It’s not too bad.