I got my Camaro discs in the mail last night. The 12 bolt housing is at the shop having other work done. I was hoping to drill the backing plates and then take them over to the shop and have them installed when the other work is being done. I have a template with the original hole spacing, I'm just not sure how to orient it on the new backing plate.

Does anyone have a template for redrilling the backing plates? I thought I'd read on here that on the passenger side the E-brake cable interferes with the lower shock mount unless drilled properly.

Also, I'm assuming that the E-brake cable goes over the axle on the driver's side? Looks to me like the assemblies are not side-specific. One mounts in front of the axle, the other side mounts behind it.

And which side uses which E-brake cable? One is longer than the other.

i wouldn't drill anything for the backing plate until you have everything in front of you and can test fit the entire assembly. on my setup using 85 camaro disks, the LH side caliper ebrake lever hit the trailing arm mount. this req'd the backing plate to be rotated and redrilled. the passenger side fit ok without any mods.

the longer camaro ebrake cable goes on the LH side, over the axle and just happened to be the correct length for the '65 chevelle. the RH side cable is already in front of the axle, so the shorter cable goes there - unfortunately it's too long for a chevelle and will have to be shortened.

as far as being side specific, the only way they fit is LH side caliper behind the axle and RH side in front of the axle.

check out this site for more info on 3rd gen camaro brakes..........
camaro rear disk info (http://www.thirdgen.org/techbb2/showthread.php?s=&threadid=166381&highlight=rear+caliper+brake+line)


Originally posted by TH:
I got my Camaro discs in the mail last night. The 12 bolt housing is at the shop having other work done. I was hoping to drill the backing plates and then take them over to the shop and have them installed when the other work is being done. I have a template with the original hole spacing, I'm just not sure how to orient it on the new backing plate.

Does anyone have a template for redrilling the backing plates? I thought I'd read on here that on the passenger side the E-brake cable interferes with the lower shock mount unless drilled properly.

Also, I'm assuming that the E-brake cable goes over the axle on the driver's side? Looks to me like the assemblies are not side-specific. One mounts in front of the axle, the other side mounts behind it.

And which side uses which E-brake cable? One is longer than the other.

Thanks for the info. I just talked with the shop and am going to take the backing plate and rotor over there tomorrow morning. He's going to take some measurements and make sure everything is going to line up properly. There are no axles in it now, so it's a good time to eyeball and test fit. I told him about the E-brake cable hitting the trailing arm mount, and we decided we'll take his necessary measurements and then go from there.

My bet is that I will need to have them do some of the work, then take the housing back to my place and fit the backing plates, and then I can take it back to them and they'll be able to finish everything up.

Hey, jbalch, what did you use for the master cylinder and prop valve? I just saw a Monte that a guy put rear discs on and he used the Corvette master. Don't know what he used for the prop. I think he just bought an adjustable one.

i bought a combination valve with a preset 50/50 distribution that i'm planning to mount on the frame near the location for a stock type distribution block. then i have a adj prop valve that will go in the rear line after the combo valve (don't know where yet), for fine tuning of the rear system.

i wanted the combo valve with a warning switch so i could add a small LED bulb in the dash.

TH, you using 3d gen brakes? 4th gen LT1 camaro brakes will bolt right up with no modification.

jbalch,

Thanks for the prop valve info. It's looking like I'm going to end up with some type of adjustable valve in the rear line, unless I can find a stock type that will work.
--Have you purchased a master cylinder yet?

69boo307,
Is the '88 Camaro 3rd gen? If so, then that's what I'm using. I don't remember finding your information about the 4th gen brakes during my searches here. Maybe I ruled them out for another reason, though I can't recall what that would have been.

i bought a front disk brake kit from ssbc, the master cyl in that kit will work for 4 wheel disks. it appears to be similiar in design to the 68-69 corvette master. i've got a '69 camaro that i'm planning to do a 4 wheel disk upgrade on using 13" corvette brakes on the front (from a 96 grand sport with the J55 big brake option) and rears from a 98 LS1 that are 12" rotors. i'm gonna look close at the s10 master cyl for that application. if i were you i'd go with the corvette master.

yeah, an '88 is a 3d gen. I used the rear brakes off a '95 Z28, minus the e-brake stuff (was too lazy to hook it up). The backing plates literally just bolted right up to my '78 vintage 8.5" 10-bolt. Perhaps your rearend is different, I'd imagine most GM axle housings from that era have the same bolt pattern for the backing plates though.

The backing plates do bolt up to the existing pattern. I think the only problem is on the driver's side. If you mount it as-is the emergency brake cable comes out and runs directly into the control arm bracket. The plate has to have the holes slotted so you can rotate the caliper/E-brake out of the way.

I was interested in using the E-brake because this is a stick car. That, and I'm a bit of a perfectionist and just wanted to have the E-brake anyway. I do use it every time I partk the car.

I'm thinking that maybe the reason I didn't go with the 4th gen stuff is that I had possible read that it interfered with the use of some wheel/tire combinations. I can't recall now. Then again, maybe I just didn't have all the information before I started this venture!

Hmmm...just got a call from the rear end shop. They are saying there's a problem locating the backing plate properly on the driver's side. He says there's some interference, but he can locate it forward of the rear axle.

My thought is, "Doesn't that flip the bleeder upside down?"

I'm going to take some additional parts (mainly the e-brake bracket) over there this afternoon and have a look at it to see what all is involved. He's basically telling me it won't work that way, but I know from all that I have read here that these brakes will bolt onto a factory 10 or 12 bolt without anything too crazy involved.

you can't locate the driver side in front of the axle, YES the bleeder would be pointing down. just rotate enough so the ebrake lever clears the trailing arm mount. this way the bleeder will still be pointing up and the ebrake lever will be in the correct location. i'll get a picture tonight of mine, it was very simple. don't do anything drastic as he is suggesting. i also had to make an adapter plate to move the shock in board about 1 inch, this is necessary for the shock body to clear the ebrake mechanism.