Rear LS1 or PBR
Thread Starter
Supreme Member
Joined: Aug 2001
Posts: 2,136
Likes: 2
From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
Rear LS1 or PBR
Which are more powerful brakes; the LS1 rear disc brake setup or the 89+ PBR (1le) rear brakes?
Joined: Mar 2000
Posts: 5,703
Likes: 132
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
I don't know about powerful, but the LS 1's are thicker rotors so they will take more heat before giving up.
Thread Starter
Supreme Member
Joined: Aug 2001
Posts: 2,136
Likes: 2
From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
Sweet so LS1's are thinker, what about height? Aren’t the PBR rear brakes 12 inch rotors? What are the LS1's?
Thread Starter
Supreme Member
Joined: Aug 2001
Posts: 2,136
Likes: 2
From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
Anyone know if the LS1 rear rotors are the same height as the 89+ PBR rear ones?
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