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View Full Version : rear disc ?'s

03MNAlero
03-23-2008, 05:18 PM
Hey all. Happy Easter to everyone. so i recently went to a junkyard and ripped out the spindles and calipers of an alero and was wanting to swap them over to my car, But my question was how necessary is changing the proportioning valve with the swap. the actual valve is located in the littler stem next to the booster i believe. I dont have ABS but im not too sure if that even matters. Could i please get some feedback from someone whos done the swap before? Also if it is necessary to switch out, where can you find it on that gmparts site? is it the pressure metering valve? Or is it the booster check valve? again thanks for any input. ;)
Cliff8928
03-23-2008, 11:38 PM
Well, theoretically that combination is impossible to find parts for. GM never produced a 4 wheel disc N-Body without ABS.
03MNAlero
03-24-2008, 01:22 PM
so....short answer its gunna be F***ed? or im just gonna have to wing it it?
Redog
03-24-2008, 04:24 PM
What year Alero was the doner?
03MNAlero
03-25-2008, 03:46 PM
the donor was a 02.
no one here has switched their drums to discs without abs? :(
Malix
03-26-2008, 12:56 AM
So some Alero's came with rear drums?
Cliff8928
03-26-2008, 01:11 AM
Yep.. there were these possible brake systems.

4-Wheel disc w/ABS. All 99-02, optional on 03-04 V6 and 4-cyl fleet orders.

Disc/Drum w/ABS. Optional on 02-03 4-cylinder models

Disc/Drum without ABS. Standard on all 02-03 models.
meadus101
10-10-2008, 01:40 PM
Not to bring back an old topic... but I'm looking at doing this now.


I have rear Drum. an an 01 with ABS.

How hard is it to do? is it really better to do?
billytheman1188
10-10-2008, 01:53 PM
How hard is it to do? is it really better to do?

I can answer this one for ya, YES! Disk brakes all around are the best. I have drilled and slotted rotors and they work GREAT (once i replace my 2 front calipers, cause they are going to shit...lol)
Ghadsphi
10-10-2008, 01:53 PM
Check out
http://www.aleromod.com/forums/showthread.php?t=22944
Basically it's a lot harder than I would like =(
Cliff8928
10-11-2008, 12:55 PM
Not to bring back an old topic... but I'm looking at doing this now.


I have rear Drum. an an 01 with ABS.

How hard is it to do? is it really better to do?

Are you sure on that? All the 99-02 should have 4 wheel disc.
Vinalero
10-11-2008, 01:00 PM
I have rear Drum. an an 01 with ABS.


:blink: HuH?

Plz Double check that! lol