Rear Blazer Brakes

[abbey castro]

On line purchase. I can't remember where from. There are several styles. Mine is the cheap one. The thing is that it must angle the shock towards the center of the car. Just spacing it towards the back will still not allow the shock to mount. It will hit the caliper.

 

[-dw-]

Do I need to relocate my rear shocks to install the blazer rear brakes?

You wouldn't need to if the calipers were mounted towards the front.

 

[abbey castro]

IMO, get the installation started and figure it out as you go. So make a list of possible problem areas such as e-brake brackets, cables, brake line hook ups to original lines, shock mounts etc. If they don't interfere they don't and that is one less item.

 

[gnvair]

You wouldn't need to if the calipers were mounted towards the front.

Many times you run into caliper to frame clearance issues when they are mounted that way on a G body.

 

[tngbody]

View attachment 180623On line purchase. I can't remember where from. There are several styles. Mine is the cheap one. The thing is that it must angle the shock towards the center of the car. Just spacing it towards the back will still not allow the shock to mount. It will hit the caliper.

I believe I can make that, looks simple enough.

You wouldn't need to if the calipers were mounted towards the front.

I got the 2wd blazer rears they mount to the back I believe

 

[gnvair]

The 2 wheel drive brakes mount the calipers to the rear. The 4 wheel drive versions mount them to the front. The 4 wheel drive versions are much more common but they have fitment issues.

 

[tngbody]

How critical is it to have the backing plates perfectly centered around the axle hub?

 

[-dw-]

I got the 2wd blazer rears they mount to the back I believe

Yes. The difference between 2wd and 4wd is the axle mounting plates and rotors and forward and aft caliper mounting. I did the swap close to 15yrs ago. The 2nd gen f-body rear disc were popular at the time. I have a-body 8.5 and other than modifying the axle bearing retaining plates it was a direct bolt on. I used 4wd axle mounting plates so if possible parking brake cables would point in the forward direction. I don't plan on it. Plan on centering the plate on the axle family close. The od of the rotor is very close to the caliper. Erroring on the side of caliper being farther away from the rotor would be less critical.

 

[Goldhawg]

Can anybody comment on the thickness of the spacer between the axle and the backing plate? I am installing the LS1 brakes on on my G-body and I see various thicknesses online, for multiple cars, so I wanted to know what G-bodies needed. I think I'm seeing 3/16" as about right. If 1/8 would work, I'd like that as I have some of that. I think the backing plate issue is the same between blazer brakes and camaros?

 

[scoti]

Figured this would be a good place to ask.... (Blazer vs. LS1 rear discs).

I know these set-ups can 'crowd' the frame on cars w/aggressive lowering (>3").
Are the rotor offesets similar or is there a difference?

Same for wheel clearance.
Are the rear set-ups any more invasive as far as caliper clearance on wheels (my rear wheels will have more back-spacing)??

I test fit some 17" wheels over front g-body spindles w/LS1 front calipers/rotors but I'm not sure if clearances are different for the rears (calipers).