9Bolt Rear End Caliper Brakets or pictures needed

[chevypower]

I need some 9bolt rear disc caliper brackets or at least a picture of them. Im swaping a 9bolt in my car and I've found the calipers($33.99each) and the rotors($69.99each). I still need the brackets and e-brake cables(do ya know of anything else?). I went to the Chevy dealership to order the brackets and they only have one braket and I don't know if it is the one that I need or not. Don't the 9bolt and 10bolt rear ends have different brackets,I know the 9bolts axels bolt in while the 10bolt has c-clips. Any ideas on where I can get 9bolt rear disc brakes parts used or new? The 9bolt came out of a '89 Formula350 and is going in my '91RS. Thanks, Bobby

[383backinblack]

if the dealer had it, its the wrong bracket, the bracket for those brakes is discontinued by GM.....i know cause i tried to get them and failed.....try a junkyard, thats where i got mine.....

[chevypower]

383BackinBlack or anyone else,
Do you know about #10112652 Superior Chevrolet gave me this # he said that he thought all '89 cars came with the 9bolt? Also is the calipers,brake lines and e-brake cables any different on the 9bolt than the 10 bolt? I figure you are full of info I need having done this swap allready! The 9bolt has brackets on it now for Baer Brakes. It has no hard lines running down the axel tubes though. Will I be able to use the ones on my 10bolt thats in the car now? I'm having to give $300+$100for shipping for the 9bolt rear end. It has 3.70 gears in it and a Auburn LSD. The car that it came out of only had like 25,000 miles on it. The dude replaced it with a Moser 12bolt. Do you think I'm getting a allright deal, or should I just leave it alone? Also what all am I going to have to have to get brakes other than the calipers, pads, rotors, brackets and e-brake cables is that it or am I leaving out somethings? Thanks for any info you can give, Bobby

[383backinblack]

Originally posted by chevypower
383BackinBlack or anyone else,
Do you know about #10112652 Superior Chevrolet gave me this # he said that he thought all '89 cars came with the 9bolt? Also is the calipers,brake lines and e-brake cables any different on the 9bolt than the 10 bolt? I figure you are full of info I need having done this swap allready! The 9bolt has brackets on it now for Baer Brakes. It has no hard lines running down the axel tubes though. Will I be able to use the ones on my 10bolt thats in the car now? I'm having to give $300+$100for shipping for the 9bolt rear end. It has 3.70 gears in it and a Auburn LSD. The car that it came out of only had like 25,000 miles on it. The dude replaced it with a Moser 12bolt. Do you think I'm getting a allright deal, or should I just leave it alone? Also what all am I going to have to have to get brakes other than the calipers, pads, rotors, brackets and e-brake cables is that it or am I leaving out somethings? Thanks for any info you can give, Bobby

i dont know about the part number....but the ebrake cables are available from most parts stores, you will probably have to make new brake lines for the rear end though, its not that hard, you just need a tubing cutter and a flaring tool....there are also brake hoses, one goes to the caliper on the passenger side, and one that goes from the chassis to the t fitting on the rear end...if i were you, id buy 2 hoses and put them on both sides, that way both calipers are easily removable....

there are 2 brackets that need counterweight levers and springs that attach to the back of the calipers to make the ebrake work...you will probably have to get them at the junkyard

[Mongoose]

If you mean the bracket that the caliper actually sits in and mounts to the backing plate then yes they are still available. I purchased a pair from my local Pontiac dealer when I was rounding up parts for my own 9 bolt swap. I now have three sets as a result of deals for parts I have found. As for brake lines(hard) check out Classic Tube. I have a set of lines on the way from them in OE metal for $45 shipped.

[383backinblack]

that depends which caliper design you have.....the earlier ones are not available anymore.....just the newer ones.

the ones your looking for are made of stamped steel, and look fairly flimsy....the newer ones have one rounded end with a hole, and a square end and are made of much heavier steel.

[Mongoose]

We must be talking about two different parts. I thought he was asking about the bracket the caliper actually sits in and then mounts to the backing plates. It sounds like you might be referring to the small bracket the park brake cables attach to.

[Mongoose]

BTW,you didn't mention which brakes you'll be using on this rear-PBR or Saginaw? If you're using the PBRs then the mounting bracket for the calipers are the same as the 10 bolt.

[chevypower]

I've decided to just get a takeoff LSD($99.95) from SLP and some 3.42 gears and I'm getting a Wildwood brake setup for my '97 Z28 so I'll just put the '97 brakes on my 10 bolt.
I think this will be easier and cheaper since I was going to have to give $300+$110shipping for the 9bolt then spend about $500+ for brakes. Also it seems to be hard to find parts for the 9bolt. But thanks for all the info.

[383backinblack]

Originally posted by Mongoose
We must be talking about two different parts. I thought he was asking about the bracket the caliper actually sits in and then mounts to the backing plates. It sounds like you might be referring to the small bracket the park brake cables attach to.

the backing plate and and caliper bracket for these brakes is one piece

[Mongoose]

For the Saginaw brakes (iron calipers) this is true,but for the PBR brakes (aluminum) they are seperate pieces.

[ebmiller88]

Here's a shot of my '89 9 bolt before I stuck the brakes on it:

[ebmiller88]

the backing plate and and caliper bracket for these brakes is one piece

BTW, you will see in the above pic that the backing plate is on the rear and the caliper is seated in the caliper carrier...two different pieces.


Ed

[383backinblack]

yes those parts are still available...the earlier backing plate/caliper bracket is one piece and isnt available

[ebmiller88]

Finished pic:

[Mongoose]

If you need a set I have one I have no need for. Let me know.

[ANDYZ28]

I do not beleive that the 9 bolt backing plates are available from GM. The bolt pattern for 9bolt backing plates is significantly different than the 10 bolt backing plates.

Thanx, andyZ28

[gmgod]

So, where can you get the 9-bolt backing plates for pbr calipers? Or can you get them at all? I need a pair as I am swaping the 3.27 9-bolt from the camaro to the T/A but only if I can find the backing plates for the pbr caliper.

[ANDYZ28]

ebmiller88 ?

[Kontrax]

i have an 85 posi disc rear i want to swap into my 86 camaro with a drum rear. i was going to buy the calipers 108 a piece from napa and they come loaded. will pbr calipers fit the 85 rear? if so, what year should i get the calipers from? im going to order new ones, i hate buying used stuff. also with the pbr brakes, what should i use for the prop valve? like i said, i have drums in the car now on a open 10 bolt. i can get a prop valve from an 87 TA with disc rears...should i use that?

Ebmiller: i pmed you about this early today.

im dying to get an answer here. i was told swapping in the 85 rear with the stock calipers wasnt worth the time but i figure anything is better then an open 10 bolt drum with 2.73


and YES you will need to change your ebrake cables and flare your lines to fit for the swap. if you have drum, you will need a new prop valve too.

Mongoose i PMed you

[JamesC]

I have a set of GM 9-bolt PBR backing plates for sale. I have a prospective buyer, but so far the sale hasn't gone through. If interested, please pm me.

JamesC

[JamesC]

The new backing plate is a 10-bolt, the old a 9-bolt.

JamesC

[JamesC]

Note the bolt-hole pattern.

JamesC

[Kontrax]

so if i get those then i can put pbr calipers on my 85 9 bolt rear?

[ebmiller88]

Sent you a reply, Kontrax. Basically, all you'd need would be the correct backing plates and all the brake stuff. It's not a hard swap.

Andy, got the plates and they are nice! Thanks for all the extra stuff, too. They fit great.


Ed

[ebmiller88]

gmgod, sent you a PM also.

Ed

[ANDYZ28]

Originally posted by ebmiller88
Sent you a reply, Kontrax. Basically, all you'd need would be the correct backing plates and all the brake stuff. It's not a hard swap.

Andy, got the plates and they are nice! Thanks for all the extra stuff, too. They fit great.


Ed

If they are up to your standards? Let others know. I only have 4 sets left.

[Kontrax]

andy, are you talking about backing plates and carriers to bolt pbr calipers to 9 bolt rears?

[ANDYZ28]

Yes, perhaps ebmiller88 can post a photo. He is trying out a set to see how they fit on his 9bolt.

[ebmiller88]

I'd post a pic if I can get to the basement tomorrow...we just got 14" of snow...and I'm in SC!!!


Ed

[JamesC]

Any body with pics of how the hardlines run with PBR's, to include the attaching brackets, etc.?

JamesC

[ANDYZ28]

I copied this from one of my old posts;

[JamesC]

Thanks, Andy.

I've assembled all the part for my swap except the shims. Can you be any help there?

JamesC

[ANDYZ28]

I don't believe shims were used on the 1989 9Bolt rears. Which I belive you are attempting to recreate.

[JamesC]

I'm swapping my 1985 10-bolt discs for PBR's. I supposed a shim would be used because shims are shown on the blow-up in the 82-91 Parts Catalogue, the rear an 89-91 (according to the part #'s four different ones are offered). Also, the 93-97 set-up shows that a shim is available.

JamesC

[ANDYZ28]

Then you are installing the PBR setup on a 90-92 type 10 bolt which was originally a disc rear?

[JamesC]

An 85 ten-bolt which is orginally a disc brake rear end.

JamesC

[ANDYZ28]

In that case I can help you out. I have the shims (only 2 per side actually required) and the two little brake line brackets. I'll PM you tomorrow.

[JamesC]

As always, I appreciate your assistance,

Thanks, Andy,

JamesC

[ANDYZ28]

I have been trying to come up with some sort of "kit" for this swap. But it seems that the caliper and rotor prices are a big stumbling block. Perhaps a kit "less" the calipers and rotors is the way to go?

[ebmiller88]

I came up with a kit, using new rotors and rebuilt calipers, and it isn't that much, at least not compared to a Baer rear kit.

Andy, nice job on those little brake line brackets. I have made some myself from 1/8" thick aluminum that mirror the stockers but I like yours better. I'll try to get those pics over the weekend.


BTW, I have no shims on my '89 9 bolt rear.


Ed

[JamesC]

There were no shims included in the parts I purchased from a 9-bolt, and I specifically asked for them if they were a part of the set-up (I did get brackets and hardlines). So thanks to Andy and his shims, I think I'll be set to go.

JamesC