91 zeee

I have a drum brake rear on my 91 Z. I just picked up a 9 bolt 3.27 disc brake rear (p/n 10054239 according to the tag).
I have a few questions:
I keep reading about this rear with the iron calipers or the "PBR" calipers. -Which is better and why?
-It seems that the PBR is better; if that is the case, is this rear worth messing with? Is there enough difference in my drum rear and this one to go through the hassle of rebuilding and installing it or should I find a PBR rear (or do something else?)
*I am looking to improve the exiting brakes for street driving and occasional track and autocross--want to keep stock wheels* I will need to do a front brake upgrade as well; although I have not decided on what upgrade yet*

naf

iTrader: (7)

Delco moraine are marginally better than drums and require retrofitting with the recall kit. PBR's are better, primarily due to the larger rotor.

JamesC

iTrader: (5)

You could convert the Delco-Moraines to PBR's:

https://www.thirdgen.org/forums/faq-...iscs-89-a.html

I'd advise changing the combination valve as well for best brake performance.

JamesC

RedLeader289

iTrader: (2)

I have a swapped rear with the delco-moraines, performance is better, and the 9-bolt is a stronger rear end than the 10. The catch is that replacement parts are more expensive.

91 zeee

James C... that link you just posted was full of info. I somehow had not seen it before....reading through it all now. Thanks.
naf and 289...I'm finding out now though that parts are hard to get for this rear....hmmm...trying to decide what to do..... I'll keep reading......

Base91

iTrader: (1)

I did the whole 9 bolt rebuild and swap to PBR brakes exercise. I picked up most of the parts cheap when I saw them and did all the work myself (after a lot of reading). The improvement from open diff drum to LSD disk was well worth the effort. Interesting learning to do it too.