Rear Disc Brake Conversion

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by Brizio, Sep 15, 2019.

  1. Brizio

    Brizio Member

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    I have a stock '79 Z28, and I would like to swap the rear drums with disk. What conversion kit do you suggest?

    Thanks!
     
  2. QUAKE_WARS

    QUAKE_WARS Veteran Member

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    so many options. Jegs or summit for kits starting at $799
     
  3. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    What is the use for the car?
    What size wheels?

    If you are planning autocross competition... Go for it.
    Street driven with 15" wheels... Probably not worth the expense for the rotor size limitation.
    A 79-81 WS6 Trans Am could be a bolt-in donor but those rears are getting harder to find.
     
  4. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    I used these guys, IIRC got the kit through Summit because of a discount. I've been well pleased with how they work, just watch the video, especially on bleeding calipers and adjusting e-brake. You'll need the staggered shock kit for a Z-28. https://www.getdiscbrakes.com/afxrd07
     
  5. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    That’s a pretty decent price!
    Just add brake pads and some wrenching.

    Did you also need an adjustable proportioning valve to use that kit?
     
  6. 72BIGBLOCK

    72BIGBLOCK Veteran Member

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    Call tobyn at kore 3
     
  7. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    Brake pads were included in my kit. I bought a disc/disc prop valve from the same supplier. I've considered changing to an adjustable but the system works fine as is. I think this is same brake setup as older Cadillac Escalade.
     
  8. ruthlessz28

    ruthlessz28 Member

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    on summits web site they have a kit im considering for under $400 complete with staggered shocks and under $300 with nonstaggered jegs has the same kit
     
  9. Jon balch

    Jon balch Veteran Member Gold Member

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    I just installed Willwood rear brakes on my 1970. Also installed new axles, Master cylinder, parking brake cables, Caltracs , and Moser differential cover. brakes1.jpg brakes2.jpg brakes3.jpg
     
    mrfleet12, dave@ztech and cadillac_al like this.
  10. dcozzi

    dcozzi Veteran Member

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    I have Wilwood 4 pistons in the rear too. Good thing you have a prop valve since the pad area is pretty large. May have to dial it back a bit since they only do 30-40% of the work.
     

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