Upgrading my front disc brakes
#1
Member
Thread Starter
Join Date: Dec 2008
Location: Morgantown PA
Posts: 267
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 GTA
Engine: 5.7 TPI
Transmission: 700R4
Upgrading my front disc brakes
Hello I was wondering about my front disc brakes.. It seems my 89 GTA Trans Am still has a single cast iron single piston caliper with an pretty small rotor. I had order a set of calipers and rotors that were performance, but clearly they don't match my current spindles. Now I have come to learn it was a 1LE performance package.
My question is do can I just swap out the current spindle for the new ones? Classic Industries has a complete conversion kit for the 1LE package http://www.classicindustries.com/pro...ts/md123b.html. Can I just bolt on these new spindles with the new brackets, rotors, brake line harware... and such? Or is there more I need to get?
My question is do can I just swap out the current spindle for the new ones? Classic Industries has a complete conversion kit for the 1LE package http://www.classicindustries.com/pro...ts/md123b.html. Can I just bolt on these new spindles with the new brackets, rotors, brake line harware... and such? Or is there more I need to get?
#2
Senior Member
iTrader: (1)
Join Date: May 2014
Location: Pittsburgh
Posts: 550
Likes: 0
Received 5 Likes
on
5 Posts
Car: 91 G92 Z28
Engine: 305 TPI
Transmission: T5
Axle/Gears: 342
Re: Upgrading my front disc brakes
You can modify/drill your spindles to fit the 1LE caliper brackets. So you'll need to source the brackets to go along with the calipers you bought. Or just get that package deal from classic.
If I were you I'd return those parts and do the LS1 conversion. It's cheaper and arguably better than the 1LE brakes. Try here: http://www.bigbrakeupgrade.com/ls1_complete.html
If I were you I'd return those parts and do the LS1 conversion. It's cheaper and arguably better than the 1LE brakes. Try here: http://www.bigbrakeupgrade.com/ls1_complete.html
#6
Member
Thread Starter
Join Date: Dec 2008
Location: Morgantown PA
Posts: 267
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 GTA
Engine: 5.7 TPI
Transmission: 700R4
Re: Upgrading my front disc brakes
One last question though. Will I need to change my master cylinder or the power booster for the new rotors? Or is it as simple as bolting on the new hardware?
#7
Senior Member
Join Date: Jun 2011
Location: Melbourne, Australia
Posts: 839
Likes: 0
Received 1 Like
on
1 Post
Car: 1988 IROC Camaro (RHD)
Engine: 350 ci L98 SBC
Transmission: T700
Axle/Gears: 9 bolt BW, Disk, Posi-traction
Re: Upgrading my front disc brakes
I got the LS1 front disk upgrade from Scott at Bigbrakeupgrade too.
Very happy with the choice, it's the best option for the bucks and Scott is good to deal with.
Very happy with the choice, it's the best option for the bucks and Scott is good to deal with.
Trending Topics
#8
Member
Thread Starter
Join Date: Dec 2008
Location: Morgantown PA
Posts: 267
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 GTA
Engine: 5.7 TPI
Transmission: 700R4
Re: Upgrading my front disc brakes
Wasn't what I was asking. I was asking if I need to change my master cylinder and brake booster because I am changing to these brakes. Or is it just a bolt on job.
#9
Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (7)
Join Date: Jun 2004
Location: Lincoln, Missouri
Posts: 156
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1980 Regal
Engine: 383 Superram
Transmission: 700R4
Axle/Gears: 12 bolt w/ 3.31 posi
Re: Upgrading my front disc brakes
I'm guessing you have 4 wheel disc brakes on your '89 GTA??? If that's the case you should be good to go as most with 4 wheel discs don't change the master cylinder or prop valve unless afterwards they have a problem with the rear brakes locking up. But you won't know that until after you put the ls1's on. Every car is a little different than someone else's. Everyone has different expectations. Hope that helps.
#10
Member
Thread Starter
Join Date: Dec 2008
Location: Morgantown PA
Posts: 267
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 GTA
Engine: 5.7 TPI
Transmission: 700R4
Re: Upgrading my front disc brakes
I'm guessing you have 4 wheel disc brakes on your '89 GTA??? If that's the case you should be good to go as most with 4 wheel discs don't change the master cylinder or prop valve unless afterwards they have a problem with the rear brakes locking up. But you won't know that until after you put the ls1's on. Every car is a little different than someone else's. Everyone has different expectations. Hope that helps.
#11
Junior Member
iTrader: (1)
Join Date: Mar 2015
Location: Pennsylvania
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Firebird Formula
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Upgrading my front disc brakes
I wouldn't hesitate to ask Scott your question. I have read a few threads concerning his products. It is my understanding that he is forthcoming and responsive. Seems like a standup guy.
I will be purchasing his products when the time comes.
I will be purchasing his products when the time comes.
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
2
12-11-2023 08:14 AM
sailtexas186548
Engine/Drivetrain/Suspension Parts for Sale
8
01-19-2016 12:21 PM
novaderrik
Transmissions and Drivetrain
3
08-10-2015 12:44 PM