Disc brake booster upgrade

[duramaxguy]

Hi all

I am putting a disc brake Dana 44 front under my 70 K20, replacing the original drum brake axle. I'm looking for advice of what brake booster to upgrade to that includes a proportioning valve to support the disc brakes.

Is there an aftermarket booster I should be looking at, or get one from a donor truck?

Thanks

[jerry moss]

if you can find one from a donor truck that would be easiest, when i converted my 69 i had a 72 donor and swapped everything including the steel brake lines to the front end, booster, master, prop valve etc.

[72c20customcamper]

I bought the setup from a member Pickmup trucks . Very nice setup

[72SB]

I bought the CPP one for my 72 manual disc/drum conversion to power brakes. Plug and play.

Or look into Tough Stuff dual diaphragm booster for better engine clearance, especially if you have a BB. Get the matching PV for disc/drum from them also or but a combo kit if the offer one. Made in USA

My CPP

[70STOVEBOLT]

Originally Posted by 72SB

I bought the CPP one for my 72 manual disc/drum conversion to power brakes. Plug and play.

Or look into Tough Stuff dual diaphragm booster for better engine clearance, especially if you have a BB. Get the matching PV for disc/drum from them also or but a combo kit if the offer one. Made in USA

My CPP

That is a nice, clean looking engine bay.

[jeffahart]

Originally Posted by duramaxguy

Hi all

I am putting a disc brake Dana 44 front under my 70 K20, replacing the original drum brake axle. I'm looking for advice of what brake booster to upgrade to that includes a proportioning valve to support the disc brakes.

Is there an aftermarket booster I should be looking at, or get one from a donor truck?

Thanks

Why does your booster need to be upgraded? If you already have power brakes, all you have to do is swap in the axle, pull the RPV out of the front reservoir. See how it stops. It will stop fine! Prop and booster won't give you anymore stopping power. The big issues will be front and rear bias and the small reservoir as it will lower as the disc pads wear. I never felt I got enough of a bump in stopping power when I moved from drum to disc. But my main goal was to move off the open knuckle/drum axle to a D60. I, later, installed a hydroboost off the same 86 diesel I got the axle. The hydro gave a significant and noticeable improvement in stopping power.

j

[old51sedan]

Originally Posted by 72SB

I bought the CPP one for my 72 manual disc/drum conversion to power brakes. Plug and play.

Or look into Tough Stuff dual diaphragm booster for better engine clearance, especially if you have a BB. Get the matching PV for disc/drum from them also or but a combo kit if the offer one. Made in USA

My CPP

I ended up with the dual diaphragm one for my setup so that I had enough room to install my air cleaner, it worked out fine for myself.

[57taskforce]

I much prefer hydroboost over vaccum boosters. That’s one of the best changes I’ve made to my 72 K20.