chawkins6789 Posted May 20, 2013 Report Share Posted May 20, 2013 Those with 14 bolts and those without that want to put one in(clones), I found info on some with discs in the rear. the complete assembly with 3.73 gearing and a G80 is part number 22847704. That is ready to install. My dealer quoted me $2450 on it Quote Link to comment Share on other sites More sharing options...
SCLA323 Posted August 22, 2013 Report Share Posted August 22, 2013 Do u know what does the original ss come with? I have 10 bolt differential, I was told by a shop that it wasn't original. I was like wtf?? Quote Link to comment Share on other sites More sharing options...
chawkins6789 Posted August 22, 2013 Author Report Share Posted August 22, 2013 Awd had the 10 bolt 8.625 rear 2wd had the 14 bolt cover 9.5 rear Sent from my Samsung Galaxy S4 using Tapatalk 4 Quote Link to comment Share on other sites More sharing options...
GI.SS Posted August 24, 2013 Report Share Posted August 24, 2013 To do the discs you just need SUV brakes off the same year. All parts from the flange out and your fine. Comes in at like 650 all brand new parts with cross drilled and slotted rotors. I have the info saved if you need it. Quote Link to comment Share on other sites More sharing options...
chawkins6789 Posted August 31, 2013 Author Report Share Posted August 31, 2013 Yea I had too many things come up so I am not doing the larger rear Sent from my Samsung Galaxy S4 using Tapatalk 4 Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted September 1, 2013 Report Share Posted September 1, 2013 To do the discs you just need SUV brakes off the same year. All parts from the flange out and your fine. Comes in at like 650 all brand new parts with cross drilled and slotted rotors. I have the info saved if you need it. You have the part numbers for the disc backing plates? That's all I really need as I'm doing z06 brakes all around. Quote Link to comment Share on other sites More sharing options...
GI.SS Posted September 4, 2013 Report Share Posted September 4, 2013 Give me til the weekend ill get back to you Quote Link to comment Share on other sites More sharing options...
SilverBulletSS Posted September 5, 2013 Report Share Posted September 5, 2013 Man if I could get that info also it would be very appreciated. I wanna swap out the drums for discs also but am having a hard time figuring out all I need. Plus I work at a shop so I can get it all at cost!! If you can help, many thanks! Sent from someplace, somewhere probably during a burnout. Quote Link to comment Share on other sites More sharing options...
GI.SS Posted September 6, 2013 Report Share Posted September 6, 2013 This was sent to me about the 13" rear SUV disc brake conversion. So my understanding goes like this. 99-04 trucks were 12" fronts and 12" rears with single piston calipers. 05-07c trucks they changed back to drums in the back and to 13" rotors and two piston calipers up front. I'm not sure what year it started but I know that 05 and later SUVs (Tahoe/Suburban/Yukon) had 13" rears and larger two piston calipers. My truck is an 05 Sierra. I am stock up front and I changed from drums to the 13" Tahoe rears. Everything is basically bolt on. Only major difference is that the SUV axles flanges are clocked on the 45, so they look like a diamond when viewed from the end. The trucks flanges are clocked so they look like a square. So you have to rotate the whole setup 45 degrees one way or another from the stock SUV setup, but the bolt pattern is exactly the same. Here is the whole list of parts you need, this assumes you have drums brakes and need everything. 1. Disc brake backing plate. I used these from Napa http://www.napaonline.com/Catalog/Ca...RecType%3aA%29 They are the same part for both sides so you need two. These are not 100% necessary, its basically a dust shield, but it helps seal the parking brake. If you live in an area prone to rust there is a newer two piece design that lets you change them without pulling the axles. Almost everybody is making these now, including Dorman that you can get almost anywhere. Just search for "tahoe rear brake backing plate". 2. The actual mounting bracket. These are the same between the older trucks with 12" discs and the SUVs with either 12" or 13" discs. GM used these on almost everything. I don't have the number for this on me, I'm at work, they are the same for both sides. The parking brake assembly mounts to this. I have the older original design ones that only have two contacts points for the parking brake shoe. There is a newer design that has three. Not sure if it's a big upgrade. I'll try to get the number tonight. I bought mine off the forum from a member. 3. Parking brake parts kit. I think the parking brake hardware is the same between the 99-04 trucks and the new SUVS. The whole parking brake is made up of the shoe and then a small hardware kit with clips and what not. You can get it all separately but I ran into a problem. There is a small piece called the "hand brake lever" that none of the aftermarket kits come with. This is the actual lever arm that the parking brake cable attaches to and applies the force to the brake mechanism. Nobody includes this in the kit because its quite thick so it apparently doesn't wear out. Also, GM does not sell this part separately. It only comes in a kit that has two shoes and two parts kits. It runs about 100 bucks at the dealer. It has all the parts you need for the parking brake minus cables. I ordered this from the dealer for an 05 Tahoe. 4. Parking brake cables. Unfortunately the cables ends for drum and disc brakes are different. There are a ton of different cables out there, but I got lucky and got the right ones on the first try. I bought them from Rockauto and they were for an 04 silverado because they still had disc brakes then. Now, my truck is a crew cab and I assume yours is extended, being and SS. So I can't say for sure they will be correct for you. I will get the numbers at home tonight. These ran about 80 total for both. 5. Rotors. I used power slot rotors for an 05 Tahoe. 126.66045SL and 126.66045SR are the part numbers and I think the cheapest I found them was on Amazon. But you could use any rotors for an 05 Tahoe. 6. Calipers. The SUV calipers are not the same as truck calipers. They are larger two piston. Also I believe the 13" rotor is thicker. You will need calipers, pads and caliper mounting brackets. I found the easiest thing to do was just to order loaded calipers from Napa. I used LE5315 and LE5316. These are complete with calipers, pads, brackets and hardware. If you wanted to run different pads they also have semi-loaded calipers. 7. Brake lines. If your SF 14 bolt is like a 10 bolt then you have a single flex line going from the frame down to a Y fitting near the pumpkin and then hardlines from there straight to the drum cylinders. Obviously this isn't going to work for disc brakes. What I did was buy a 5 line braided stainless kit from Russel that was for an 04 Silverado. This includes the two front flex lines, and three rear flex lines. Now this part required some creativity or fab. The flex line from the frame to the rear axle is a direct replacement. but somehow you need to either modify or replace your two hardlines from the T fitting to each side of the axle. What I ended up doing was getting some cheap replacement hardlines from Napa. The lines were 3/16" tubing with 3/16" fittings and they are double flared. Napa carries these is a few generic sizes. I ended up using a 30" and a 40". These were a little too long so instead of doing some creative bending to use up some length I bought a double flaring tool from Napa and I cut them to the length I needed and reflared them. This is the only part of the job that wasn't really bolt on. I didn't even look into ordering factory hardlines from GM. In your case I think you'd be screwed on that since I don't think they ever did a SF14bolt with disc brakes. The Russel kit I used was http://www.summitracing.com/parts/RUS-672430/ 8. Banjo bolts. You will need banjo bolts to connect the rear left and right brake hoses to the calipers. I just picked some up from Napa, I believe they are 3/8-24 thread. Obviously alot of this could be done alot cheaper. I used all new parts and I didn't use the cheapest stuff available. As long as your axle uses the same square mounting flange then all of this should bolt right up. The only vehicle this stuff doesn't work on is the hybrid Dana 60 they used on the quadsteer trucks, as far as I know. They had a rectangular mounting flange. Anyway, I hope that helps man. I did take a few pics as I went, I will try to get those posted up and get the rest of the part numbers I used. Feel free to ask if you have anymore questions. Good luck! Quote Link to comment Share on other sites More sharing options...
GI.SS Posted September 6, 2013 Report Share Posted September 6, 2013 Here is the part number for the backing plate. The GM part number for the back plates is 88983912. Quote Link to comment Share on other sites More sharing options...
SilverBulletSS Posted September 21, 2013 Report Share Posted September 21, 2013 Awesome, thanks so much bro! Sent from my SAMSUNG-SGH-I747 using Xparent BlueTapatalk 2 Quote Link to comment Share on other sites More sharing options...
A_FUrious Posted October 24, 2013 Report Share Posted October 24, 2013 Here is the part number for the backing plate. The GM part number for the back plates is 88983912. Thank you for this information. I am in the process of obtaining parts to do Z06 all around. Getting definitive information seems to be a challenge regarding this particular rear and a conversion. So if I'm gathering this correctly. I just need the backing plate, and caliper mounting bracket, e-brake assembly, and Russel's stainless kit from an 07 Tahoe. (#'s1-4 and 7) Pull the axle for removal and assbly. Then follow Rudy's Z06 upgrade from there? Drum to Z06 conversion kits!! lol. that rolls off the tongue nicely.. Any part numbers would be greatly appreciated. I'm not keeping the drums based solely on appearance. Quote Link to comment Share on other sites More sharing options...
GI.SS Posted October 25, 2013 Report Share Posted October 25, 2013 yeup thats it. which part #s do you need? Quote Link to comment Share on other sites More sharing options...
A_FUrious Posted October 25, 2013 Report Share Posted October 25, 2013 (edited) Those with 14 bolts and those without that want to put one in(clones), I found info on some with discs in the rear. the complete assembly with 3.73 gearing and a G80 is part number 22847704.I guess really none.. With that part # I can get the assembly info pretty much.. Thanks again for the info Edited October 25, 2013 by A_FuriouSS (see edit history) Quote Link to comment Share on other sites More sharing options...
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