Brake conversion - 1977 manual disc/drum to power/disk/disk

[D13]

I did a lot of searching but really couldn't find an answer that relates to my square body brake swap.

1977 GMC 1/2 ton, strippo special, manual everything (exactly zero options as far as I can tell). Manual brakes, disc in front. Desire is to convert from manual dics/drum to power disc/disc. I have bad knees so need the power brakes, and the rears need redoing so might as well go disc.

For the rear I intend to use Camaro calipers as the manual trans needs functional parking brakes, will probably use a board vendor's brackets. I'm assumming that I can keep my fronts discs as is. I'll upgrade to disc/disc prop valve and probably and adjustable valve in the rear line (or maybe that neat all-in-one...).

So now I'm at the booster and MC, and pedal. I understand the pedal ratio is different power to manual. And since I'm running a manual trans I can't just grab any of the common auto trans set ups. Fortunately my parts truck is a 1981 3/4 ton manual trans with power brakes, from which i could take the complete pedal, booster, and MC (probably bad).

So here's the questions.
1. Will my 1981 booster and pedal set up swap directly into the 1977?
2. Which Corvette MC should I use to do the swap, and will it bolt on without push rod customizing?

[D13]

What, no one else has suffered through this? Do I own all the manual brake trucks ? LOL!

Seriously, any help appreciated.

[northeimcustom]

*bump* i also have a manual disc/drum narrow pedal in my 83. i want power!

[Scottshotrods]

Here is one option for you that we can help you out with you can go with a new master booster combo for your truck with a prop valve on the unit.The master booster will be a direct bolt on to your truck.

Here is the part number 7387bb4 1973-87 disc/drum kit your price on this kit will be $296.10.IF you would like to go this route let us know and we can take care of you all

Justin

[Scottshotrods]

The part listed above is a CPP number and we have these instock

Justin

[starvinartis]

The 81 pedals assembly SHOULD bolt right in, if it doesnt you just swap the entire pedals AND hanger assembly under the dash. (There are a couple different style pedals at the top where they swing, dont know the exact year it changes). You shouldnt need a rear prop. valve if you use one from a 'Vette, they are 4 wheel disc. As for the little push rod between the booster/MC, compare the hole on the Corvette MC to your donor MC (from the 81), if its a shallow hole like the truck it will work, there are only two lengths pushrods available OEM. This is the hole where the pushrod goes.