Hi everyone.

My truck is a 1998 F150, 2 wheel drive, 5.4L with four wheel ABS. I want to Swap out the Differential to have 4 wheel disk brakes and not drums for better braking. If I get a complete rear end out of a 1999 to 2003 f150 with disk brakes and 4 wheel abs. Are all the shock, and spring mounts the same and would the brake lines and drive shaft need to be changed too?
Thanks. Any information that you have would great.

 

As long as it's a 9.75 axle, nothing would need to be changed. Brake lines are the same. However, the master cylinder may be different.

You could also get one out of a 4x4......with a lower ratio and limited-slip, if you wanted

 

You will just be wasting time and $$$. The difference that you'll be making with the swap is not worth it. The drums work just as well as the disk would, if you did the swap.

 

Thanks guys for the information. I plan on putting a spool in the rear also. As to the master cylinder is the mount the same to.

 

just buy a brake kit. Its easy as pie to swap drum brake to disc. Swapping out the whole rear end is rediculous !! Brake swap my friend. Piece of cake, cheap, and your braking will greatly improve, as will ease of working on your brakes. If you off road often (assume you do, since your going full spool) then disc brakes are the only way to go. You might need to play with the porportioning valve for the brakes, to make sure enough fluid flows, but other then that, its quick and simple.

http://www.ssbrakes.com/brakeproduct.../StandardRear/

something like that. I know they offer all kinds of kits, you could call them and see what they can offer you.

 

Thanks Chris for the information.

 

Name's James, but close enough !

 

Woops.....HAHAHA

 

did you finally do the swap i wanted to do the same due to my rear end got messed up. what was needed besides the 9.75 rear end . thanks for the help

 

Hell yea I did it!! It took a weekend to do it. If your truck has drum brakes and you change it to disk you will need a 3/8 tube flaring tool for the brake lines and cable clamps for the parking brake cable to hook up the spring. I installed new shocks in the rear, u-joints at both ends of the drive shaft, new rotors and pads (Just cause I was there and had it all apart.) Thanks for asking!! John

 

cool thanks you didnt have to change the brake booster. i will attempt this this weekend.

 

did you swap rear ends to 9.75 if so did you need the master cylinder and brake booster and what else besides the flange tool

 

I installed a 9.75 limited slip diff with disk brakes out of a 1999 F150 4x4. I did not need to change the master cylinder or the brake booster. One other thing i forgot was if your truck has 4 wheel ABS you will need to take off the sensor plug on top of the old diff to rewire the new diff with the old ABS system on the truck. Cause the plugs on a 98 and a 99 ABS system are different. If you don't the ABS light will come on.

 

ok thank you very much bought the diff yesterday and aslo got the master clylinder and brake booster as well just in case got it for a great price. i also got it with the lef springs so just gonna replace the whole thing. again thank you for all the help i appriciate it.

 

I just did a conversion like that. Swapped out my whole rear end in my mach i