disc to disc plumbing

[texastrendz]

just wondering what is the best way to plumb the truck with a disc/disc setup? i will be replacing everything, i will be running d52 calipers all the way around. can i just use a standard disc/drum master from a 72 and put a disc/disc prop valve. what do ya guys think? any and all info would be great.

thanks daniel

[peglegs]

daniel, go back 1 page in the top right side it says search this forum, click on it & type in disc to disc brakes also here's a couple of links to play with good luck

http://www.speedwaymotors.com/

http://www.summitracing.com/

http://www.jegs.com/

http://www.lmctruck.com/

you can call summit and jegs their great for tech help speedway is so so and LMC is only a parts house but have agreat deal i have ordered from them a number of times they might have all what u need

you need the correct master cylinder and proportioning valve for disc to disc brakes and the booster

[peglegs]

somethin else thats related

http://67-72chevytrucks.com/vboard/a...p/t-13692.html

[texastrendz]

just for clarification, i want to know if it is possible to just run a disc/disc prop valve off of the master that was designed to run a disc/drum. i want to make it as simple as possible. i want to know if i need to change the master to a disc/disc and the prop valve. do i need to just run the disc drum setup and put an ajustable prop valve in the rear line. i have a little knowledge on these setups and have searched. just want to know what people have done and the best way of doing it. thanks again daniel.

[peglegs]

im not all positive here but i would say you would need bigger bore m/c for pressure to 4 wheel disc brakes if you dont get anymore replies here i would call jegs or summit they know there stuff also i did a search in the archives and didnt find anything ill try to search other areas

[lolife99]

Originally Posted by texastrendz

just for clarification, i want to know if it is possible to just run a disc/disc prop valve off of the master that was designed to run a disc/drum. i want to make it as simple as possible. i want to know if i need to change the master to a disc/disc and the prop valve. do i need to just run the disc drum setup and put an ajustable prop valve in the rear line. i have a little knowledge on these setups and have searched. just want to know what people have done and the best way of doing it. thanks again daniel.

I would say YES.
Some people run a disc/disc prop valve and an adjustable proportioning valve in the rear line.

I looked in my Performance On Line catelog and it shows the prop valve as being the only difference between disc/drum and disc/disc.
Some say the reservoirs in the M/C need to be the same size on disc/disc brake set ups,... like the old 68-72 Corvette M/C.
I don't think it matters since the rear caliper pistons are so much smaller/

I highly recommend an aluminum M/C.
They don't cost that much more and eliminate the need for painting and watching them rust a year later.

[peglegs]

you may find some helpful info here for the total update

http://67-72chevytrucks.com/vboard/s...d.php?t=363769

[texastrendz]

Originally Posted by lolife99

I would say YES.
Some people run a disc/disc prop valve and an adjustable proportioning valve in the rear line.

I looked in my Performance On Line catelog and it shows the prop valve as being the only difference between disc/drum and disc/disc.
Some say the reservoirs in the M/C need to be the same size on disc/disc brake set ups,... like the old 68-72 Corvette M/C.
I don't think it matters since the rear caliper pistons are so much smaller/

I highly recommend an aluminum M/C.
They don't cost that much more and eliminate the need for painting and watching them rust a year later.

thanks lo,
i was looking at the online cat. also. it says the aluminum master is for manual brakes, can a booster just bolt up to it to make it power?

[lolife99]

I'm not sure if they are the same m/c.
It may only require a different length pushrod.
I would call them and ask.