1963-1972 Chevy/GMC Truck Disc Brake Conversion 

Great Tip!

Do I need a brake booster when installing this kit?

@@anthonysao8830 it's up to you. I run mine with a wilwood master, no booster. I like manual brakes much better

Damn it! I knew he looked familiar 👊

GI GUNS 0341 I thought his voice sounded familiar

You bet! Have fun with the project.

@@BROTHERSTruckPartsTVAWSOME Show and Tell 👍🏻 I’ve used the Floor Jack also to take off the Spindles . Just make Sure you have a Motor In the hood . The weight will help !

Thank you sir!

He is a true PRO!

Yes great job

Sam was a great teacher!

Thanks for checking it out!

Yes you would have to have the Motor in the vehicle to do that !!!!

Thanks!

Ideally you should at least change the master cylinder. Disc type master cylinders have a different bore size than those used in a drum brake system. Additionally, most disc type maters cause a small amount of residual pressure to remain in the lines to keep the pads from retracting too far.

@@BROTHERSTruckPartsTV Thank you so much for the reply! Definitely going to upgrade the master cylinder. You just earned my business. Thank you again...

Yes, completely replaceable using later model Truck replacements.

Thank you!

You can do a disc brake conversion without adding power providing you run the proper master cylinder and proportioning valve. However, we would recommend doing both at the same time.

2.25" drop

99% of stock 15" or bigger wheels work. There are VERY few wheels that won't. We've actually never come across any that don't.

We use one the ones available here: www.brotherstrucks.com/Power-Brake-Conversions/products/2142/

We don't do anything for the mini trucks, sorry!

You need to change the factory master to a Disc/Drum master that will deliver proper pressure front and rear as well as hold residual pressure in the front. Not sure, but you might be wanting to convert to Power Brakes at the same time. Check out our website www.brotherstrucks.com for all the possibilities.

BROTHERS Truck Parts thank you

There's nothing out there that will bolt straight on to the '62, you're stuck buying disc conversion spindles that are specific for your truck.

@@BROTHERSTruckPartsTV I Agee - that’s what I am going to do to my 66’ -soon ...

In '63 your factory brakes had a single cylinder master which we always recommend you convert to dual cylinder for safety reasons... so YES, we would say replace the original Booster/Master combo. As for the 6 lug wheels, our disc brake conversion will fit behind MOST 15" factory 6 lug wheels. If your wheels are 14" however, there is almost ZERO chance of them fitting with the disc conversion.

UPDATE: After a doing a little research regarding wheel fitment, we've found a few variables that make some 15" wheels NOT FIT with the disc brake conversion. Primarily, if your 15" wheel has only 3 "nubs" on the center of the wheel to retain a hubcap then your wheel will probably NOT WORK with disc brakes. If your 15" wheel has 4 nubs for hubcap retention, then it WILL WORK with disc brakes. Thank you for asking, we hope this helps.

I had to go 16" min went with 17" wheels for my upgrade 6 lug also

How can I convert front drum brake to disk by using Parts from wrecking yard.

@@georgecurrier5018 I'm wondering the same thing. I have a 69 GMC, 6 lug drum brake set up. It would be great if I can pick up from a junkyard everything I need.

Adding front disc brakes is a safety and convenience step that most classic truck enthusiasts do. however, adding rear disc brakes is up to you and ultimately what you want your build to be. As far as install cost, we would estimate it between $400-$750 depending on the shop you choose.

Ruben, the studs should be the same size? Why does your truck have small studs? Doe you mean it has 5 studs instead of 6? We have conversions for 5 lug and 6 lug trucks at www.brotherstrucks.com

@@BROTHERSTruckPartsTV it's having 6 studs which 11 mm.i wasn't trying to fit the nuts from Ford f100 but they can't fit.and I tried to fit the nuts from my 67 C10 truck to Ford f100 and they are small

@@BROTHERSTruckPartsTV I mean the wheel bolt and nuts

@@rubenfilippus2956 our 6 lug units have 7/16" (11mm) studs, our 5 lug units have 1/5" studs, does that answer your question? If you need more help with this PLEASE CALL US at 800-977-2767, it is very difficult to do technical troubleshooting through RU-vid comments.

@@BROTHERSTruckPartsTV Exactly

It really depends on the wheels offset when you are running 15". Contact our office at 800-977-2767 and we'll help you sort it out.

It would be a different conversion on a C30. Unfortunately we do not carry that conversion at this time. Sorry!

@@BROTHERSTruckPartsTV that's cool mate. It's great that you took the time to reply. Thankyou 😊

Call our shop and lets see if we can help figure it out. 800-977-2767

It's not necessary. It was a factory installed item in the 60's-70's and it's not common to put them on when doing a conversion.

@@BROTHERSTruckPartsTV great thank you.

Roger, typical tapered bearings can be manually adjusted using this method: "... in the case of a conventional truck non-driven wheel with a single adjusting nut design, manual setting involves tightening the adjusting nut while rotating the wheel until a slight bind is felt. Then the adjusting nut is backed off 1/6 to 1/4 turn to the nearest locking hole or sufficiently to allow the wheel to rotate freely with some minimal end play. The adjusting nut is then locked in this position. Skill and judgment are required to determine when the wheel binds slightly in rotation." For more on this subject you can visit www.timken.com/wp-content/uploads/2016/10/5556_Bearing-Setting-Brochure-1.pdf Thanks for asking!

@@BROTHERSTruckPartsTV exactly

The rotors in this kit are 11" and they will fit with a 15" rally. 12" rotors will most likely NOT have enough clearance on most Rally Wheel offsets.

I have a 68 suburban all stock. Will this kit fit with my original wheels?

we have a few options here on our website: goo.gl/KtWYdK

Yeah, bummer nothing is available for the C30. Your best bet is to piece one together from a later year model truck like you said.

We have a disc brake conversion that you can find on our website here: www.brotherstrucks.com/71-72-WILWOOD-DISC-BRAKE-CONVERSION-5-LUG/productinfo/DBU5L25/ Another option is the Complete Big Brake Kit with Power: www.brotherstrucks.com/63-87-COMPLETE-BIG-BRAKE-KIT-WITH-POWER-5-LUG/productinfo/CBBK875/ Please feel free to call us during regular business hours to make sure this is the exact kit that will work for your application.

BROTHERS Truck Parts you guys are awesome. Thanks guys!!!

BROTHERS Truck Parts one more thing guys, I don't know much about breaks except replacing them, I was wondering if these come with dust seals, I see in the description that it states it has dust caps, are those the same thing? Hey and thanks for the quick response. I wasn't expecting a reply so fast.

Yes they do!

Our disc brake kits won't work on a 4x4, 2wd only. Customers who have converted to disc on 4wd trucks normally just swap the axle for a later axle with discs.

Different kits. Balls joints, tie-rods, etc are slightly different through the years, so the parts in the kits also vary.

you'd be better of to back it off a little bit to the next notch that the cotter pin can be put through instead of trying to use a ball joint press.

No my problem is during assembly. My new ball joint won’t fit into my New lowering spindle. Like I can’t even thread castle nut at all to get to cotter pin.

You have the wrong spindle then. They make these spindles with various different sizes/tapers to accommodate particular years of ball joints that were different sizes. It sounds like you have a spindle that's got an early size tapered hole. If you bought them from us then call our Customer Service at 800-977-2767 and let's get it handled.

@@BROTHERSTruckPartsTV I agree Omggg

Pretty much any of the 15" wheels will work.

So 15” stocks will fit?

@@edwardnunez218 yes!

Check our current prices at www.brotherstrucks.com

Usually about 6-8 Hours.

We didn't, it's the same truck start to finish.

Us K guys (we have 3 here at the shop) only option at the moment is to swap axles. No kits are currently available (Sept 2020)

@@BROTHERSTruckPartsTV Might look into seeing if 71 and up small bearing blazer stuff would bolt on. I will link a video. would be great to see as a kit from you guys. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Xui-MHOVX7M.html

@@Rogue_wyo Yessir, thank you buddy! We'll check into this and maybe something good will come from it. Appreciate it!

@@Rogue_wyo Tossed this over to the product development guys and they already knew something about this. It sounds like the small bearing spindles would have to be manufactured before a kit could be offered. Otherwise, pre-1970 K guys would have to go out and get a set of spindles from a junk yard, etc before they could mount all the parts for the conversion. This doesn't appear to adapt onto the factory drum spindle.

ya the video mentioned spindles from g2.

Call our customer service department at 800-977-2767 amd one of our techs will help you out!

On this truck we used a 6-Lug "Deluxe" conversion, but you might want to check out the other options here and decide what you prefer www.brotherstrucks.com/Front-Disc-Brake-Conversions/products/2139/

As far as we know there is no commercially available 4x4 Disc conversion. Most guys switching pre-1971 4x4's to disc just use a front axle from a 1971 or later truck. Sorry we couldn't be more helpful.

@@BROTHERSTruckPartsTV Ok, thanks anyway. I was told by one you tuber "as long as its a dana 44 the spindles should be the same, without switching the hole diff/rear end, being as I can NOT find anything with disc front end on it. So I'm kinda in a rut, but time will find a way! thank you..

You can convert it to disc, but first you have to convert it to 1/2 ton parts. It's really not that big of a deal, just an extra step for the 3/4 ton guys.

BROTHERS Truck Parts ok but I’d like to keep the 8 lug wheels front and back; any advice?

@@robert.williford527 That can be done, but the specifics of that conversion are too much to get into in RU-vid comments. Call our shop at 800-977-2767 and have one of the Tech Guys go over it.

You don't need a larger one, but you probably need a different one.

Depends on what conversion you are doing.

Good eye!

He hosted Shadetree Mechanic for 15 years before hosting Two guys Garage, Motorhead Garage and Sam's Garage. He retired last year.

@@BROTHERSTruckPartsTV glad he is taking easy ! I’m trying-to myself