I recently came across a rear end that I wish to swap into my 88 iroc-z. Currently I have stock rear disc brakes. Will I be able to reuse these disc brakes with my rearend. I have seen both yes and no depending on who I listen too, and I really would like a definitive answer.

 

Yes. I use a 4th gen rear in my IROC. I also had rear disks. The Breaks work great! Almost a direct bolt in. (with exception of the e-brakes)

 

Yes i did the same thing to mine out of an 02 rear. But whatever you do make sure that you get a rear WITHOUT traction control. Life is too short to find out you have to replace the brake lines after you install the rear...

 

Perhaps I am misunderstood. I mean my 3rd gen brakes on my 4th gen rear. I plan to do a big brake kit later, but not at this time if at all possible

The 4th gen rear is out of a 01 ss that I was given. Now I have to determine what I need to do to it to get it up to snuff. So far seems like it has a leg up as it has an after market differential, but it needs a set of gears.

 

What does traction control have to do with the brake lines?
Only differences I see with the rears is the axles have reluctor rings and the backing plates have sensors in them.

 

4th gen rears with traction control use a separate brake line for each wheel from the prop valve. There is no junction on the rear.

 

Yep, you got me there.
Is "ABS only" the one with the sensor in the top of the pumpkin?
Or is there a 3 channel ABS and a 4 channel ABS?
I have both types of rears at my house, actually have 2 of each.

But he is using his stock brakes so he could use the stock lines on his rear end on the new rear.

 

why don't you use the brakes that come with the new rear? they are superior to yours since it's an '88 and the PBR ones that the SS rear has didn't come out til '89. seems like if it has traction control then you just have to do some plumbing before you put it on.

 

mine was supposed to have traction control, but I do have a junction... my rear came out of a 1996 Z28 with a 6 speed.

 

The 3rd gen lines would be too short. That's why I waited some time before I bought my ABS only 4th gen rear. Lots of TC rears for sale at the time, but no ABS only. I went with a 2002 TA rear and put 97 LT1 style rear brakes on. Everything bolted right up, except the E brake cables. It took about 30 minutes to bend and cut a bracket out of a junk fender from our bodyshop and weld it to the floorpan.

EDIT: Correction to my above post. The 2 separate lines come from the ABS hydraulic control unit, not the prop valve...

 

Could you use the brake lines on the rear from a 98+ V6 f-body?
I don't think I've seen a V6 with traction control and the 98+ had the rear disc, not sure about the 97 and earlier though.

 

Because the rear didn't come with the brakes. I got the rear housing/ axle/ zxyl(spelling?) differential free. Some guy was giving it away. All looks to be good. Trying to research what I have to do to use it. I would prefer to wait on brakes till I can spend like 800 on a big brake kit.

So is the only problem the brake hoses or is there something else?

 

You can get the 4th gen rear brake kit from speed automotive for about $100, comes with calipers, backing plates, and rotors.
You can purchase rebuild kits for the calipers for about $7 and it's not that hard to do. I did one of mine, just need to do the other side. buying the kit is worth it since the core charge for the calipers are $50 each if you go to somewhere like pep boys to buy new ones. $125 without core and $75 with a core.

 

Your missing the point.. I am trying to put in a temporary fix until I buy a big brake kit. If Im gonna spend 100 dollars I might as well spend 800 and put in the monster. Im trying to see if it is feasable to use my stock brakes on a 4th gen rear end to hold me until money is more flowing.

 

Those are the same as the big brakes. If you get the Baer rear end kit for $700 you get those calipers and plates, just different rotors. So, if you get the 4th gen setup, all you need is rotors and you are good to go.

If I had my old setup, I could see if it would work on a 4th gen rear. When do you plan on attempting the swap?

 

Im not neccessarily talking about the baer kit. I am talking about either a c5 kit or the willowood heavy duty for a 4th gen. This is an open track car.

 

I havent really planned out my attack yet. I have it entered in a big car show next weekend then it is driven to de. Then I have to order the gears/ get the gears installed.

So I would guess a month or so.

 

Do you need to put the rear end on before you get the brakes?
I would just wait until the rear is complete if it didn't need to go on right away.

 

That is an option.. but I figured it was worth looking into going temporary.

 

I guess you might as well try it and let us know how it goes.
I've done 4 4th gen rear swaps and we always used the 4th gen brakes.
My original rear was a 9 bolt and I just sold that complete with the brakes and bought the 4th gen brake kit from speed automotive. all the other rears came with brakes on them already.
I am pleased with the brakes I have, just need some new rotors,

 

Do you happen to have a link to speed automotive?

 

www.speedautomotive.com

 

Thanks for the help.

 

No problem.

 

So, back to the TCS on the 4th gen axels - how would you go about removing the system? Is it a simple matter of plumbing new brake lines for the rear? My local parts yard has a rear axel from a 2000 Camaro that I am looking at, but it has TCS. I want posi, and the only posi axels in my area have tcs as well. The guy said that there wasn't an option after 98 for posi w/o tcs - is that true? Thanks guys.

 

That guy is an idiot. I have a 2002 TA rear, factory 3.42 with posi, and it's an ABS rear.

The lines can easily be bent and flared, or you can just get some non TC lines from a 4th gen car.