how to put disc brakes on the rear for under 200 bucks step by step

[Ians10]

good for show trucks.. but not a daily driver.. around here you will not get a inspection sticker without a e-brake

[tyson_cbr]

That's why Illinois kicks ass, no inspection and good how to man and thanks for the 4link!!

[ronnie36695]

i love that idea bro great info in this thread im going to look at doing this upgrade

[devildragger]

Thanks very much guys I did this thread to show there is a cheap easy way to put disc brakes on the back of a s10.

[draggindime072010]

Is it possible to just buy rearend from a 98 up blazer and just bolt it in in my s-10 2wd. It is also bagged with a threelink and notchs would that interfere with anything? my three is the bolt in from suicidedoors.com

[devildragger]

No wouldn't work blazer rearend is wider

[Petro]

Quote: Originally Posted by devildragger

No wouldn't work blazer rearend is wider

Yes it would work...... 2wd rearend are all 54.5" WMS and 4wd rears are 59" WMS.... So if his was 2wd and he swapped a 2wd rear NO PROBLEMS....and so on...etc...etc...

[draggindime072010]

so all i would need to do is swap the rear end from a 2wd blazer and hook up the brake lines?

[Petro]

Quote: Originally Posted by draggindime072010

so all i would need to do is swap the rear end from a 2wd blazer and hook up the brake lines?

YES.... with or without same gears...different gears the speedo would be off and trans would shift differently...Just go with same gears...

[draggindime072010]

Do you know what gears are in my truck? its a 2.2 with the 5 speed and the rear end thats really common i think its 7.5 or something like that

[Petro]

Look for one of these codes in your glovebox...it'll be on a sticker...




GU4=3.08
GU5=3.23
GU6=3.42
GT4=3.73
GT5=4.10
HC4=4.56

G80 - locking differential


compare to the codes in your glove box to know which gear ratio you have

[draggindime072010]

ok thanx a lot there is a place around here that i can get the rear end from pretty cheap so im gonna do it pretty soon

[b00nd0x]

thanks for the info guys ... this really helps & Hopefully I'll be doing the whole rear end setup out of a 98+ for the rear discs then the front rotor swap as well!!!

[_juice_]

i wonder if this would work on a 62 belair? seems to me it would be pretty much the same thing...right?

[*LO4U2NV*]

Quote: Originally Posted by Petro

Look for one of these codes in your glovebox...it'll be on a sticker...




GU4=3.08
GU5=3.23
GU6=3.42
GT4=3.73
GT5=4.10
HC4=4.56

G80 - locking differential


compare to the codes in your glove box to know which gear ratio you have

I was able to find the proper ratio rearend at a local salvage yard. Does it matter what size ring gear it has if I plan to use the whole rear end? They only have a 7 5/8" but no 8 1/2".

PS awesome job on the how to here. If the price is right, I might just swap the rear, but if not, this page has been added to my subscriptions.

[BudRacing]

Ring gear size doesn't matter in a full axle swap. As long as it has the same ratio gears it should work.

[Petro]

If you swapped a 8.5 rear in and you didn't already have one ,then you would have to shorten the driveshaft 2" .Because the pinion yoke sits 2" further forward than the 7.5 rear....

[Bad-S]

this is exactly how mine are done. i have calipers off a old caddy seville that have the ebrake included in them. i dont use them but if anyone wants the ebrake that is an option

[no_pulse]

So if I found a 4wd 98 Jimmy or Blazer rear end, could I use that on my 4wd 97 Jimmy if the gear ratio's are the same? Would I need to modify it or would it be a simple swap.?

[Petro]

Quote: Originally Posted by no_pulse

So if I found a 4wd 98 Jimmy or Blazer rear end, could I use that on my 4wd 97 Jimmy if the gear ratio's are the same? Would I need to modify it or would it be a simple swap.?

No need to modify...It would be a "simple" swap....

[no_pulse]

Quote: Originally Posted by Petro

No need to modify...It would be a "simple" swap....

Sweet. Now its just the task of finding a complete 4wd 98 jimmy rear end.

[trucky]

Quote: Originally Posted by Petro

No need to modify...It would be a "simple" swap....

Yea but wouldn't the proportioning valve have to be swapped out to disk/disk instead of the disk/drum?

[Petro]

Quote: Originally Posted by trucky

Yea but wouldn't the proportioning valve have to be swapped out to disk/disk instead of the disk/drum?

Not necessary...but you could if you would like to...

[Gearstix]

Could you use/make a dust shield or whatever for the back of the rotor like factory disc vehicles come with, just so crap don't get in there, or is it really needed?

[kacy]

Found some info few years ago and it worked.The rear brake set up off any 10 bolt gm rear will swap to another 10 bot.I swapped rear brakes from a 95 camaro z28 that has the 7.5 10 bolt to a 69 camaro that had the 8.2 10 bolt.What makes this really nice is you get the backing plates and the mount from the donor rear end and installs and all looks factory.

[Petro]

^^^It's not always that easy...Not all GM 10 Bolts have the same housing ends...And there are different axle flange offsets to take into account...

[rider0033]

i dont understand how to get brake fluid to the calipers??

[devildragger]

U bolt the brake line to the calipers and bleed the brakes

[Lo-noma]

curious to know, my company goes through alot of astro vans for our service vehicles. and i've notice alot of em have the disk brake rears? would that work out? also would some of them are AWD,(i know i should ask this in the drivetrain thread) but would the awd setup beable to be transplanted? cuz that would be bad ass.

[rider0033]

Quote: Originally Posted by devildragger

U bolt the brake line to the calipers and bleed the brakes

i asked a buddy today and he told me to grab everything starting with the "dual" master cylinder and all the way back. i really want to get rid of the drum brakes. think i'll need to grab the fronts too??

[Petro]

No need to change master cylinders...The fronts wouldn't be a upgrade unless they are the dual piston fronts...

[specsix]

I am having the worst time trying to find the weld on brackets. All the from summit, jegs, and speedway say they are for a 11.75" rotor. Well the rotor for a 98+ blazer is 11.5 inches. Also my axle tube is not 3" in diameter; it is almost 3" , but its not. I have a 7.5 10 bolt rear end.

I guess the brackets will work with slightly smaller rotors?

This is what I want to get

http://www.speedwaymotors.com/GM-Wel...kets,3348.html

But it looks nothing like the one in that is used in this how-to.

Can anyone clear this up?

[Petro]

I know that our axle tubes are 2.75" in diameter...

[specsix]

Yeah. That is what I thought. Now that you have confirmed that, I think I am screwed. I bought all the stuff for the conversion, but the brackets are the last thing I need. I ordered some locally, but they were the wrong ones, so I decided to look at the online shops, but nobody has them for 2.75" axles. I hope I am just getting unlucky with my search. I really do not feel like taking off the axles on my new rear end rebuild to put on junk yard backing plates.

[devildragger]

ya u can use that bracket or the other one in the upper picof the add. all the brackets i found are for 3 inch to i had a lil gap to weld up on the ends of the brackets

[specsix]

Quote: Originally Posted by devildragger

ya u can use that bracket or the other one in the upper picof the add. all the brackets i found are for 3 inch to i had a lil gap to weld up on the ends of the brackets

Thanks for clearing that up man. That helps a lot.

[specsix]

Just to follow up.

I bought those brackets. Well they did not really fit with my rear end/rotor combo. The caliper holes were exact, but the length of the bracket was not long enough to fit the rotor (off about 1/4 of an inch). I was expecting only the ends to have gap, but the entire bracket had to be raised 1/4 off the axle tube.

What I did was weld a 2.75 inch diameter half pipe piece that was 1/4 inch thick to the axle. I then welded the bracket to that. The best thing was to get the correct bracket, but to be honest, I really do not think there is a correct bracket. I have a stock rear end and used blazer 98+ rotors.

Anyways, the calipers are on and both sides seem strong and stable. Just thought I would share my experience.

[Petro]

^^^You should've just used stock blazer parts...Much easier swap...No welding required...Just space the stock bracket out from the axle tube flange about 1/8"-1/4" and plus you would have ebrake....

[dimentd]

hey i may have dibs on a complete f-body rear diff with complete disc set up inner parking shoes and all. all of this should be a direct swap too right? When i disassemble everything then reassembly with the clips as above, then install the disc set up ya? will i need to sapce out the brackets as you do with the blazer 2wd? also this has a G80 carrier, is it worth a swap?

[thrice4life44]

can you use a front rotor for the rear?? or are the rotor sizes different....

[BudRacing]

They are different.

[qban-s10]

not intending to Thread Jack .......

$199
http://www.s10forum.com/classifieds/...ct/51381/cat/6

[kdnybtr]

i just finished mine, this thread helped out alot. the only thing i would add is to replace the wheel bearings and seals. bearings are about $6 and the seals are about $4. advanced auto has a slide hammer with attachments to rent and it only took about 10 minutes since the axels are already out. it might really need to be done but its cheap and its already apart. just weld up the caliper brackets with the old bearings and seals in before you replace them.

[xtremereef]

wat u do for brake lines

[manulin_matty_c]

would these work and how difficult would it be?
http://www.speedwaymotors.com/75-GM-...Kit,14021.html


or these

http://www.speedwaymotors.com/Speedw...rake,1999.html

or


http://www.speedwaymotors.com/GM-Com...Kits,2000.html than


and which one would be the best buy?
thanks

[l008com]

So in Massachusetts, you can't get an inspection sticker if your ebrake can't hold your vehicle still with it in drive. Is this mod for off road use only? Or am I missing something?

[Jaxom]

It's old, but this shows other options instead of having to weld, if you don't have a welder...

http://www.s10forum.com/forum/f14/re...51/index4.html

You can get even fancier, and buy this kit....

http://cbrperformance.com/syclone.php?Category=Syclone

[arSonoma]

are the backing plats off the rear disc equiped blazers all the same weither they are 4wd or not?

[DriftinBlzr]

Quote: Originally Posted by arSonoma

are the backing plats off the rear disc equiped blazers all the same weither they are 4wd or not?

I know that on my '02 2dr 2wd Blazer, the calipers are toward the rear of the vehicle and I picked up backing plates from a 4dr 4wd Jimmy and the calipers were toward the front. I think the location of the caliper has more to do with a 2dr vs 4dr frame than 2wd vs 4wd. I'm sure someone will correct me if I'm wrong.

Later, Doug

[eatinpavement]

nice idea and write up. yeah there are better ways of doing this but most minitruckers i know are all about pinching some pennies and thinking outside the box to do so.

for the brake lines you can either bend them around or cut them back if you have a means for reflaring the ends and then attach a set of hoses to them like the front has or if you are using the blazer setup just grab the line assembly with hoses from the donor vehicle.