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4gen caliper on 3gen Bracket Backing Plates

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Old 06-21-2009, 01:11 AM
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4gen caliper on 3gen Bracket Backing Plates

hi
does 1996 trans am caliper fit on a 89 "Iroc-Z" Caliper Bracket Backing Plates
Old 06-21-2009, 06:24 AM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by icebird84
hi
does 1996 trans am caliper fit on a 89 "Iroc-Z" Caliper Bracket Backing Plates
If the 89 has PBR's, yes.

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Old 06-21-2009, 09:34 AM
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Re: 4gen caliper on 3gen Bracket Backing Plates

that would be the rear backing plates, they wont fit the fronts.
Old 06-21-2009, 02:07 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

yes rear backing plates

not sure what update on front I will do
Old 06-21-2009, 02:12 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by icebird84
yes rear backing plates
89-97 are virtually the same, so there's no real benefit (if that's your intention).

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Old 06-21-2009, 02:17 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

well James I have drums and my trans am is 84
Old 06-21-2009, 02:26 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Ah. There's some info at the end of the following link that you might find useful:

https://www.thirdgen.org/forums/tran...-10-bolts.html

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Old 06-21-2009, 02:38 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

damn did 10 bolt come in 86 I sure that I have 9 bolt BW
Old 06-21-2009, 02:47 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

just count the coverbolts, you never know what ended up in the car after 20+ years
Old 06-21-2009, 03:56 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by //<86TA>\\
just count the cover bolts, you never know what ended up in the car after 20+ years
or how your memory is bad after only 10 years and mind looks to be real bad . be for I put wheels back under I will do a recount

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my brother put the count at 10 bolt and now I need to open see if it is the same 4.11.1 axle and differentials that my brother put in it 10 years ago

and get the number from the cove box to what this Trans am came with
Old 06-21-2009, 04:24 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by icebird84
be for I put wheels back under I will do a recount
The 9-bolt has a rubber plug in the diff cover.

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Old 06-21-2009, 05:04 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

and the ercount is in 10 bolts

dose this mean that iron-z Bracket Backing Plates will not work?

It will be fun if Ed answers his pm

I´m typing in service parts identication numbers
Old 06-21-2009, 05:41 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by icebird84
and the ercount is in 10 bolts

dose this mean that iron-z Bracket Backing Plates will not work?
The 9- and 10-bolt backing plates for PBR calipers have different bolt patterns.

JamesC
Old 06-21-2009, 05:45 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

so I need this from Ed
Old 06-21-2009, 05:52 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

i have a 9 bolt, do the F body PBRs also hook up w/ the 3rd gen parking brake cables? I could swear the parking brake stuff is different on the later ones. I think i need 89-92 stuff for mine, including the backing plate since mine has the iron calipers and one side is leading, the other trailing (which looks ridiculous)
Old 06-21-2009, 05:53 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

if I´m not wrong the Chevrolet Astro Van 4.11.1 has 33-spline axles is it Strong enough? for 350 rwhp

Last edited by icebird84; 06-21-2009 at 06:03 PM.
Old 06-22-2009, 10:39 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by icebird84
so I need this from Ed

Yes, and the '89-97 calipers and rotors, etc. I'll be catching up on PMs this evening.

Ed
Old 06-22-2009, 10:41 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by Twin_Turbo
i have a 9 bolt, do the F body PBRs also hook up w/ the 3rd gen parking brake cables? I could swear the parking brake stuff is different on the later ones. I think i need 89-92 stuff for mine, including the backing plate since mine has the iron calipers and one side is leading, the other trailing (which looks ridiculous)

Yes, you need first design rear cables for your '87 and it's a bolt on deal. The leading/trailing thing allowed GM to use the same caliper on either side, lowering cost...and looking terrible.

Ed
Old 07-04-2009, 01:12 AM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Ed, are those brake hard line brackets in your new kit?
Old 07-06-2009, 05:03 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by ebmiller88
Yes, you need first design rear cables for your '87 and it's a bolt on deal. The leading/trailing thing allowed GM to use the same caliper on either side, lowering cost...and looking terrible.

Ed
What are 1st design rear cables? What year did they come on? I assume 88-92 w/ the pbr rear calipers?
Old 07-06-2009, 06:01 PM
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Re: 4gen caliper on 3gen Bracket Backing Plates

Originally Posted by icebird84
if I´m not wrong the Chevrolet Astro Van 4.11.1 has 33-spline axles is it Strong enough? for 350 rwhp
Astro Van will mean leaf springs & no panhard bar, so a LOT of work fitting one in, regardless of the outcome. Might as well get a Ford 9" at that point, then your strength worries are pretty much over with.
Old 07-13-2009, 09:09 AM
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Re: 4gen caliper on 3gen Bracket Backing Plates

ok heres one, will a 89 9bolt disc brake caliper fit a 98+ caliper bracket?
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