6 Lug Rear Disc with E-Brake Brackets
 

This set of brackets will allow you to have rear disc brakes on your 6 x 5.5 bolt pattern ’64-’87 GM truck 10 and 12 bolt rear differentials. This rear disc conversion is completely bolt on with one exception. The drum/wheel register will need machined down to approximately 3.06”. I do recommend upgrading to ½” wheel studs at this time, but it isn’t absolutely necessary for the installation. The rotors used with these brackets as well as the calipers are easily found at your local auto parts supplier. The basic application for the rotors is a 2000 Silverado or Suburban. The application for the calipers is the ’93-’97 F-body rear calipers. A complete parts list with part numbers is included with the brackets.

Since these rotors are nearly 13” in diameter, you will need to run 16” or larger diameter wheels. With the 16” wheels I would suggest verifying that your wheels are compatible with this size of rotor prior to purchasing this disc brake conversion.

The cost on this set of brackets with installation hardware is regularly $120.00. However, thru March 31, 2011 the introductory price is $100.00. Satin black powder coating is an additional $12.50. Shipping within the USA is a flat $11.65. If you are outside of the USA, contact me for a shipping cost. For payments I accept PayPal and money orders. Credit card payments can be made thru PayPal. To place an order, you can send me a PM here on the forum or you can email me at captainfab454 at hotmail dot com.

I would like to thank a former member here, grendel for contacting me about making these brackets, and for supplying a rotor suggestion as well as installed photos.

In a couple of days I will post a pic of the complete package you are purchasing.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Here are some pics from grendel's installation

Re: 6 Lug Rear Disc with E-Brake Brackets
 

That's a cool looking setup. I'm going to look at it a lot closer if I go to bigger wheels.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Thanks for the compliment.

Yes, that is the one thing about the rotors bigger than about 12", is you can't run a 15" wheel.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

i have a gmc with a dana 44 rear end do you think this would work??? thanks

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I'll x-post this question cause I don't know which is the correct place to put it. From looking at the specs, it looks like your D52 kit will work with a '96 K1500 rotor if you make your spacer 5/8" thinner.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Sorry, no these brackets will not work on a Dana 44. The backing plate flange has a different bolt pattern and I'm not sure if the brake offset is the same as a 12 bolt.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

You are correct in that a 5/8" spacer will line up the caliper with the '96 K1500 rotor, but that rotor will not accomodate a D52 caliper and pad. I already tried that a while ago. I have plans on working on a conversion utilizing the '88-'98 K1500 rotor, but with the D369 calipers. Those are the ones that are OEM on the '88-'98 K1500's. These will work with 15" wheels.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Localmotion74, was there something you had to say??????

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Ttt :D

Re: 6 Lug Rear Disc with E-Brake Brackets
 

New here? What does Ttt mean? Did you ever get pics of the ebrake kit? I've acquired a pair of Eldorado rear calipers.


Thanks,

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Sorry, wrong thread.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

hi what do you me you need to machine down?what area? thanks jason how about shipping to 55330 mn thanks jason

Re: 6 Lug Rear Disc with E-Brake Brackets
 

The drum/wheel register needs to be machined down from 3.50" to aprox 3.06" to be able to fit the rotor onto the axle flange. This is the area indicated by the red arrow in the pic below.

Minnesota is within the USA so the flat rate shipping of $10.00 applies.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

If you are considering this conversion, you might want to look at replacing the old axles. The new axles can be ordered with the correct size drum register.

If you factor in the cost of machining 40+ year old axles, it might be worth applying that expense toward brand new ones. Something to think about if your putting all new parts in the housing.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Thanks for bringing this up.

Inspecting your axles is a good idea anytime they are removed from the housing, particularily the axle/wheel bearing surface. With the semi-floating design of the typical GM rear differential, the axle itself is subject to wear, since it is the inner race of the axle/wheel bearing.

If your axles are showing some wear, and you are also looking at upgrading to rear disc brakes, you might consider a set of aftermarket replacement axles. This way you can solve your axle/wheel bearing issue, the hub register issue as well as upgrade to larger 1/2" wheel studs all at the same time.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

instead of turning down the hub why couldn't a guy open up the hole in the rotor?

don't forget guys, you'll need longer studs as the rotor is much thicker than the face of the drum.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Turning it down also adds lots more wheels to the list of wheels that will fit. I put torgue thrust 2's on mine and had to do the same thing to get the wheels to fit.
Jimmy

Re: 6 Lug Rear Disc with E-Brake Brackets
 

There are a couple reasons to turn down the axle flange. One as mentioned by PGSigns, is more wheel selection. Second is if you were to machine the rotors to fit the axle flange, you would have to pay to do this every time you need a new rotor. Granted it won't be that often that you will need to replace the rotors, but just machine the axle flange and only pay once for the machine work. Also as I mentioned in my original post, I recomend upgrading to the larger and longer 1/2" wheel studs. The axle needs to be removed to do this properly, so you might as well have the register on the axle flange turned down while they are out. The rotor is only about 3/16" thicker than the drum. The need for longer wheel studs will depend on the wheels being used.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Do you have a part number for longer studs? I could use 'em.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I don't have a part number with me here at home. The studs I used in the pic above were just stock studs for a '73-'87 C10. I don't have the length of them off hand. How long of studs do you need?

Re: 6 Lug Rear Disc with E-Brake Brackets
 

The wheel studs I used in the pics above are the replacement studs for the '71-'86 C10's and also the '85-'94 Astro/Safari vans. They are Dorman #610-138 which are 1/2"-20 x 1-17/32" long. These extend past the rotors 15/16". If you want to stay with the original size of 7/17"-20 studs, then use Dorman 610-168. Those are 7/16"-20 x 1-1/2" long.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Is a ebrake an option on these?

Re: 6 Lug Rear Disc with E-Brake Brackets
 

The '93-'97 F-body rear calipers only come with a built in e-brake.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

The suspension trailing arms are they something you made?

Also can the discs be had in dimpled/drilled and slotted?

I have 95 Camaro Z28 calipers laying around with backing plate/bracket.

Any one ever tried the 98-2002 Camaro Z28 2 piston caliper in front. The so called LS1 brakes. I imagine since the rotor might be thinner may not be very good for a heavy truck.

I think I'm ready to buy the brake booster plate and the hydro boost adapter.

Rob

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I relpied to your PM......thanks :)

Re: 6 Lug Rear Disc with E-Brake Brackets
 

THE front or rear for the Chevy truck rotors? Or are they the same?

Re: 6 Lug Rear Disc with E-Brake Brackets
 

You need the front rotors. The rears won't work with these brackets. These brackets come with a parts list with part numbers for the parts you will need. You should have your parts order in the next day or so.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Those look like rear rotors. The 2000 Suburban has an integral parking brake in the rotor hat. Are you sure?

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Yes you are correct, my mistake. :o I guess I was thinking of the new setup that I'm working on, which uses the front rotor.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I am finally at a point where I can use these. Before I buy a set, any idea what ebrake cable to use?

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I've not done an installation using these Camaro calipers yet, so I don't have a definite answer for you. This question has been asked before and again todat in the 5 lug Camaro caliper bracket thread. So far no one has replied. Someone has to have an idea, since I have sold quite a few sets of these, and glock sold several sets before me. I'm not familar with the factory e-brake cables on the '93-'97 F-body, so I don't know if those can work or not. You might end up having to have a couple cables made by someone like Inline Tube, or one of the other vendors. I'll look around some and see what I can come up with.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I just stumbled onto this thread today, very neat idea. Any luck with a bracket to allow the use of 15" wheels? I saw you mentioned working on one, but I couldn't see if you had put one together yet. It is late, and I'm crashing hard so I could be missing it.

I do have a question for you though Capt., Going from a disc/drum setup to a disc/disc setup, Would that require a new master cylinder/booster combo? I'm getting ready to do a swap on the front of my '65 to discs, and am just curious if I am going to need to replace the booster/master parts again if I upgrade to rear discs. Booster is off a '89 C1500, and master is off a '79 C10. Thanks Capt.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

I just about have a few of the ones that will accept 15" wheels, completed. Right now I'm waiting on an order of lazer cutting, which I should have by sometime next week.


Technically when you switch to 4 wheel discs, you should change your master cylinder and proportioning valve to disc/disc components. Some guys claim they have used the disc/drum components with success. If it were mine, I would switch the master to a disc/disc unit, and then install one of the Wilwood adjustable combination valves. You could actually install one of the Wilwood combination valves with your disc/drum setup.

http://www.summitracing.com/parts/WIL-260-11179/

Re: 6 Lug Rear Disc with E-Brake Brackets
 

someday...

Re: 6 Lug Rear Disc with E-Brake Brackets
 

The 6 lug rear disc brackets for 15 inch wheels are now available here

http://www.67-72chevytrucks.com/vboa...22#post5016222

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Bringing this thread back to life. Anything wrong with keeping the 7/16x20 lugs? Are the holes in the rotors already set up for the 1/2 hole? Will this be a problem?

Re: 6 Lug Rear Disc with E-Brake Brackets
 

The wheel stud holes in the rotors are sized for 14mm studs which measure .551". Technically speaking, with the 7/16" studs which measure .437", you should probably have some bushings made to take up the difference. With that said, not everyone does so.

Re: 6 Lug Rear Disc with E-Brake Brackets
 

Haven't bumped this in a while.......