The Stovebolt Site Forums The Shop Area Engine Shop Power disc brakes on a dually ?

Whats the chance of getting front and rear or even just front power disc brake's for my K-3000 GMC ?

Mike

Excelent, but depends on how much work you want to do, and how much of the original stuff you want to keep.

I know nothing about your truck, or that model, but I have had good luck putting axles with huge disc brakes under my trucks. Dual rear wheels with disc front and rear...

Grigg

OUTSTANDING ! ! !

Can i keep my dynosaur relic axle's ? Just need the power boost disc brakes and have the clutch still work !

Mike

Again, I don't have any idea what your options are for the original axles.

If you look at the picture albums linked below, in both the AD Chevy axle swap and the 61 ford Detroit folders I show the process of swapping axles, both with hydroboosted disc brakes. The Ford even has the original brake master cylinder on the firewall, look at the pictures first, I am not saying that part of the swap was ideal, just the only way I could find to solve the problem.

I gather you have a combo clutch and brake master cylinder?

Grigg

YES SIR ! I do... tis why i asked if the swap could be done at all . . .Now what about power drum brake's ? can that be done easy ?

Mike

Here is a hydroboost set up that is operated with a slave cylinder, the original master cylinder stays on the firewall.
[IMG]http://inlinethumb61.webshots.com/29052/2598576140080251109S200x200Q85.jpg[/IMG]

I mounted the master - booster - slave combo outside the frame under the cab.
The master slave system operating the booster and primary twin circuit master cylinder is by no means ideal. I only did it that way because the 6V53T left absolutely no room under the hood for the booster, and hardly enough room for the original single circuit master.

This approach could work for your truck, but I would divorce your clutch and brake master cylinders and mount the booster on the firewall before I did the master slave booster master contraption again.

Grigg

So than I could use the bossted master to push my Drum brakes just fine ?

see i was told to remove the single line master install the vacuum booster and dual line master get that hooked up move, than use a single line brake master frome a 40's or 50's coupe than hook that to the clutch is what i have been getting told. . .

but if i put the boostedmaster on and stay with the stock drum brakes am i going to have wheel cylinder issue's will it stop better ?

Mike

You may want to get some more expert advice on this, but here are my thoughts.
The firewall vacuum booster, dual circuit master, and separate clutch master I think would be your best choice.

For the clutch master I would look for an master cylinder originally designed for a clutch, a mid to late 60's Dodge pickup could be ideal.

Hydroboosted drum brakes are not recommended, although it has and can be done, they tend to act funny.

I see no problem with your original brakes and wheel cylinders if you add a vacuum booster, it will help some, but not as much as boosted disc brakes.

Grigg

it'a got the old Eaton diff it ain't the corp #14 I can't find any thing for that diff. . .No gear's no brakes Nothing zip zero!

The front end is regular A-frame/torsion Bar front that GM has used for year's I'm sure put a newer truck under the front end...

Mike