Got LS1 Rear Brakes on today
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Junior Member
Joined: Jan 2003
Posts: 94
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Car: 87 IROC Z
Engine: 5.0 TPI
Transmission: 700R4
Got LS1 Rear Brakes on today
Well I successfully installed my brakes using my 87 hardline. It required slight bending on the passenger side and drivers side was about 10" to long. So I bent it in a S-shape by the t fitting. which by the way is in the same location.
Ive drove about 100miles with awesome results. No more groaning noises, no clanking of the pads over ever bump. A solid brake petal and increased stopping power by alot. I still cant lock up the fronts or the rear. I think due to cheap pads.
sorry no picture till tomorrow, only one.
But when standing back it looks way bigger in the rear. The rotor takes up almost the whole inner wheel. The front looks so punny compared to the back. Next 6 months I will have new rims and c5 13" Z06 rotor/caliper. Due to raise, and access to dealer discount at my job.
I ll try and upload the pic tomorrow if my girlfriend lets me.
Ive drove about 100miles with awesome results. No more groaning noises, no clanking of the pads over ever bump. A solid brake petal and increased stopping power by alot. I still cant lock up the fronts or the rear. I think due to cheap pads.
sorry no picture till tomorrow, only one.
But when standing back it looks way bigger in the rear. The rotor takes up almost the whole inner wheel. The front looks so punny compared to the back. Next 6 months I will have new rims and c5 13" Z06 rotor/caliper. Due to raise, and access to dealer discount at my job.
I ll try and upload the pic tomorrow if my girlfriend lets me.
Member
Joined: Jan 2002
Posts: 188
Likes: 1
Car: 1990 Firebird Formula
Engine: LT1
Transmission: T56
Axle/Gears: 3.42
I got my install done this week.. I also have not yet taken pictures. (no digital camera)
I have been having trouble with a leak/brake light coming on. I thought I figured out my leak and drove around with no problems the last two days, but this morning I seem to have started leaking again.
I went to a 20" line on the drivers side and didn't have to bend it at all.
Still debating on the need for a new prop valve, as when there is a good firm pedal, the brakes seem about equal to the old drum setup.
I am thinking of replacing the soft rubber line that goes to the t on the rear axle, as this is where I tightened down the hard steel line the other morning that temporarily resolved my leak.
My experience thus far though with the discs working for a short period of time was that there was little difference in the feel of the brakes. Maybe a new prop. valve will help that. My guess is that I won't feel much difference until I upgrade to 12" rotors in front and match the system with the components I need. (m/c and prop valve)
I have been having trouble with a leak/brake light coming on. I thought I figured out my leak and drove around with no problems the last two days, but this morning I seem to have started leaking again.
I went to a 20" line on the drivers side and didn't have to bend it at all.
Still debating on the need for a new prop valve, as when there is a good firm pedal, the brakes seem about equal to the old drum setup.
I am thinking of replacing the soft rubber line that goes to the t on the rear axle, as this is where I tightened down the hard steel line the other morning that temporarily resolved my leak.
My experience thus far though with the discs working for a short period of time was that there was little difference in the feel of the brakes. Maybe a new prop. valve will help that. My guess is that I won't feel much difference until I upgrade to 12" rotors in front and match the system with the components I need. (m/c and prop valve)
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Joined: Feb 2000
Posts: 2,361
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From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Here's two links with pictures on installing '98+ LS1 rear disks on a drum 3rd gen.
https://www.thirdgen.org/newdesign/t...reardisc.shtml
http://members.fbody.com/86firebird/ls1/ls1brakes.htm
https://www.thirdgen.org/newdesign/t...reardisc.shtml
http://members.fbody.com/86firebird/ls1/ls1brakes.htm
Supreme Member
Joined: Mar 2001
Posts: 6,577
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
Originally posted by RaGe
Still debating on the need for a new prop valve
Still debating on the need for a new prop valve
get an adjustable one from wilwood. then you can really dial those rear brakes in.
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
Originally posted by Dewey316
why put the time/effort and money into a new prop valve.
get an adjustable one from wilwood. then you can really dial those rear brakes in.
why put the time/effort and money into a new prop valve.
get an adjustable one from wilwood. then you can really dial those rear brakes in.
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Joined: Mar 2003
Posts: 1,149
Likes: 1
From: Gladstone, Missouri
Car: 91 Camaro RS
Engine: 5.0L TBI (ebl inside)
Transmission: T-5
Axle/Gears: 3.42 lsd 10 bolt
Originally posted by KagA152
so what did you guys do about the parking brake cable?
so what did you guys do about the parking brake cable?
Member
Joined: May 2001
Posts: 242
Likes: 0
From: Castle Rock, CO
Car: 89 Turbo Trans Am, '14 Forester XT
Engine: 3.8 Turbo V6
Transmission: 2004-R
Axle/Gears: 3.27
I want to do this swap on my ride, but how do I bend the line on my 87? It has the 4WD brakes. Is there a special tool that I will need?
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iTrader: (5)
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
thats what you have to do. i decided against putting one on my car since its by no means a race car, and i didnt want to monkey with it, so i bought a 1le valve for my ls1 around swap. results next week hopefully
TGO Supporter
Joined: Jul 1999
Posts: 3,838
Likes: 4
From: Another world, some other time
Car: 86 LG4 & 92 TBI Firebird
Engine: The Mighty 305!
Transmission: 700R4
Axle/Gears: 3.42
Originally posted by 92RS shearn
Will those brakes work with a 9-bolt as well? Without making custom brackets and all that is.
Will those brakes work with a 9-bolt as well? Without making custom brackets and all that is.
https://www.thirdgen.org/techbb2/sho...hreadid=234163
Senior Member
Joined: Apr 2000
Posts: 788
Likes: 0
From: Wichita, KS
Car: 92' RS
Engine: LO3
Transmission: Probuilt 700R4
Axle/Gears: 3.70 9-bolt
Thanks Justin, that will be a future project. I'll see how I do with the fronts first. But that did satisfy my curiousity
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