Off Road Forums On Planet4x4 banner
1 - 9 of 9 Posts

·
Registered
Joined
·
31 Posts
Discussion Starter · #1 ·
I read that a guy put 3/4 disc brakes on his 1 ton axles front and rear. How is this done? Is there a tech article on it?
 

·
Wrench Wench
Joined
·
6,190 Posts

·
Registered
Joined
·
360 Posts
You don't have drums on the front, do you?

Re: the rear brakes - When I put disks on my 14B, I bought replacement rotors and calipers for a Chevy D-44 (any rotor/caliper from a '73 to '77 Chevy Dana 44 will work.) The brackets you need to buy to mount them can be bought all over Ebay, the Internet, the magazines, and undoubtedly through people right here. I got mine from Blue Torch FabWorks (http://www.bluetorchfab.com/). Fairly cheap and clockable, too. I'm sure you can find something similar for a D-60/70 if that's your bag.

-Mikey-
 

·
Registered
Joined
·
360 Posts
I should add that there's something else you need to do or buy if you want an emergency brake. I think it involves using Cadillac parts, but I might be getting my answers crossed. Since we live in the frozen tundra, I don't use an emergency brake anyways...too easy for it to freeze, so I didn't spend any time learning about them. Far as my truck's concerned, the tranny hooks me up when I'm in PARK and I've installed a line lock to give me "stay put" confidence for when I'm crawling.

I'm still toying with the idea of putting an emergency brake on the transfer case, though. there's one (or two? one, I think) unused ports on my NP205 that's meant to drive a mechanically-driven winch...I could run it off there, I s'pose. If not there, maybe between the transfer case and the rear drive shaft?

Hell, I don't know where it goes. Is it obvious that I've never seen one of these? Yeah, I think so. I've read about them a bunch, but not one truck I've seen has one. I wonder why. Until I learn, perhaps I'll stick with the line lock.

-Mikey-
 

·
Registered
Joined
·
466 Posts
This swap has become very common, with many companies making caliper brackets. You can use the gm 3/4 ton calipers or cadillac calipers. Using the gm calipers does not give you an emergency brake, and the cadillac calipers are said to have some problems with the self adjusting mechanism.

Line locks are not a emergency brake. If a line is cracked or ripped off the line lock will not work. It only holds the pressure in the brake line.

Here are a few places to start if you are thinking about the swap:
http://chevy.off-road.com/chevy/article/articleDetail.jsp?id=200819
http://shakerbuilt.com/14_Bolt.html

And my favorite 14 bolt tech site:pirate 4x4-14 bolt bible.

http://www.pirate4x4.com/tech/billavista/14b_bible/index.html

http://www.pirate4x4.com/tech/billavista/14b disc brakes/index.html
 

·
Registered
Joined
·
360 Posts
The line lock is handy when your out wheeling and you want to get out of your truck to look at something. I'd never use it for anything long term (and by long term I mean any time I'm away from truck.) Since I don't use emergency brakes (because of the chance of freezing shut), the line lock is enough.

That doesn't keep me from looking at transfer case brakes...

It's an easy mod to do, DaBruin. Don't hesitate. Hell, you'll probably cut 100# of unsprung weight getting rid of those huge drums on the 14B.

-Mikey-
 

·
Registered
Joined
·
57 Posts
I have a buddy in Driggs, Id. that did the disc swap on his 14B, he loves it. say's he can easily lock up his 35" boggers.

It's a really, nice clean conversion.

-blindstudios
 

·
What next?
Joined
·
3,965 Posts
I have the disc brake swap on my 14FF. I also have a 78 dana 60 front (ford) with dual piston calipers. On the rear I used 3/4 chevy rotors, with calipers for an 85 3/4 ton truck (heavy gvw, there are 2 different 85 3/4 ton 4x4 calipers, larger piston in the heavy version)

I have run all different tires sizes, from 35 mt's to 37 bfg muds to 40 hawgs to 42 tsl's. Do the swap and dont look back, its cheap, easy, and I can lock up any of the tires I have ran very easily.

I would add an adjustable proportioning valve, to let off some of the rear brake. I have a crew cab short box (fairly heavy on the rear axle) and my rears still lock up easier than the front.
 
1 - 9 of 9 Posts
Top