Disk brake rear
Thread Starter
Junior Member
Joined: Jan 2001
Posts: 62
Likes: 0
From: Washington NC
Car: 1989 Iroc-z
Engine: 1998 L31 350
Transmission: 700 R4
Disk brake rear
Can I put a rear end out of an 89 RS in my 89 Iroc. I know that it will fit, but can I put my 9 bolt disc brakes on the 10 bolt? Will changing the rear affect my wheel offset? Thanks.
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1989 IROC-Z Original 350 was swapped for a 305! Why, I'll never know.
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1989 IROC-Z Original 350 was swapped for a 305! Why, I'll never know.
TGO Supporter
Joined: Aug 1999
Posts: 14,811
Likes: 1
From: Jackson County
the 9 and 10 bolt brakes have differant bolt patterns. you might be able to transfer the hole pattern and drill and tap where you need to, but i don't know for sure.
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ICON Motorsports
1st & 3rd
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ICON Motorsports
1st & 3rd
Supreme Member
iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
Nope wont work the 89 RS is a drum brake and the backing plates that the calipers bolt to are not removable from the 10 bolt, sorry.
TGO Supporter
Joined: Sep 2000
Posts: 6,775
Likes: 27
From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
I don't know if the drums are the same from 87 to 89,, but my drum backing plates unbolted. I had to pull the axles to get them all the way off. I took the disc brakes off a 9 bolt rear and welded the backing plates onto my 10 bolt rear. Everything seems to work alright and lined up just fine.
Unfortunatly,, it's not just a simple unbolt bolt change.
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My Firebird
Part Diagrams
[This message has been edited by deadbird (edited February 05, 2001).]
[This message has been edited by deadbird (edited February 05, 2001).]
[This message has been edited by deadbird (edited February 05, 2001).]
Unfortunatly,, it's not just a simple unbolt bolt change.
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My Firebird
Part Diagrams
[This message has been edited by deadbird (edited February 05, 2001).]
[This message has been edited by deadbird (edited February 05, 2001).]
[This message has been edited by deadbird (edited February 05, 2001).]
Thread Starter
Junior Member
Joined: Jan 2001
Posts: 62
Likes: 0
From: Washington NC
Car: 1989 Iroc-z
Engine: 1998 L31 350
Transmission: 700 R4
Thanks. Oh well, looks like I might just part that car out.
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1989 IROC-Z Original 350 was swapped for a 305! Why, I'll never know.
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1989 IROC-Z Original 350 was swapped for a 305! Why, I'll never know.
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