1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Rear Disk Conversion/14 bolt

Discussion in 'Differential & Driveline' started by Curt, Jun 6, 2020.

  1. Curt

    Curt Junior Member

    Posts:
    9
    Likes Received:
    2
    Joined:
    Sep 11, 2017
    Location:
    Carlsbad
    First Name:
    Curtis
    Truck Year:
    1984
    Truck Model:
    K-20
    Engine Size:
    383
    Questions for guys that completed the disk brake conversion on the 14 bolt....

    Slid the rebuilt 14 bolt under 84’ k20,in place of semi float 14 bolt.Using a master cylinder from 80’ model corvette.

    1.Should I replace the front proportioning valve with a unit from the same corvette?

    2.What to do with the load leveling valve that was attached to metric 14 bolt?

    3.If someone had deleted the height load valve in their pickup,would you mind posting a pic or 2,please?

    4.Lastly,any other suggestions on parts or advice that worked for your disk brake conversion?

    Thanks guys.

    Curt
     
  2. Curt

    Curt Junior Member

    Posts:
    9
    Likes Received:
    2
    Joined:
    Sep 11, 2017
    Location:
    Carlsbad
    First Name:
    Curtis
    Truck Year:
    1984
    Truck Model:
    K-20
    Engine Size:
    383
    This is the rear height proportioning valve

    6CE522FF-A004-40B3-B4FE-7648BC4459C1.jpeg

    3EC8F685-ED79-4CDB-99F3-4FD89DEE6AF5.jpeg
     
  3. nvrenuf

    nvrenuf Full Access Member

    Posts:
    764
    Likes Received:
    276
    Joined:
    Jul 30, 2010
    Location:
    Mobile, Al.
    First Name:
    John
    Truck Year:
    1991
    Truck Model:
    K5
    Engine Size:
    454
    No pics but on my old 91 crew cab I bypassed the load sensing valve in the back. Just ID the inlet and outlet brake lines, connect your axles brake hose to the tube that was going to the inlet side of the valve.
     
    Curt likes this.
  4. Craig 85

    Craig 85 Full Access Member

    Posts:
    2,460
    Likes Received:
    1,810
    Joined:
    Jan 25, 2017
    Location:
    Grass Valley, CA
    First Name:
    Craig
    Truck Year:
    1985
    Truck Model:
    K30 SRW
    Engine Size:
    454/TH-400/NP205
    Here's what I did on my K30. I just pulled the OEM hose out from the frame and connected through the stock bracket.

    IMG_1260.JPG
    IMG_1250.JPG
     
    nvrenuf and Curt like this.
  5. K201979

    K201979 Full Access Member

    Posts:
    864
    Likes Received:
    809
    Joined:
    Oct 22, 2018
    Location:
    Winona, missouri
    First Name:
    Hippie
    Truck Year:
    1979
    Truck Model:
    K20
    Engine Size:
    350ci
    I didn't have a hight sensing valve, but im running the stock prop valve. Its fine in normal day to day, but in a panic stop, without allot of traction, my rears lock up first. I plan on getting rid of the valve, t-ing the front, and putting an adjustable valve to the rear. Just havnt got to it yet.
     

Share This Page