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Wilwood d52 calipers on k30 dually

Discussion in 'Brakes' started by Lu Blunt, May 22, 2019.

  1. Lu Blunt

    Lu Blunt Full Access Member

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    First Name:
    Luke
    Truck Year:
    1979
    Truck Model:
    K30
    Engine Size:
    350ci
    Had an issue with death wobble awhile back. Finally resolved with wheel bearings and resurfaced the rotors. Now 5k miles later the death wobble has returned and just like before only happens when braking. So I’m thinking maybe warped rotors again? gonna replace the rotors, calipers, pads n hoses. I wanted to upgrade the brakes but all the big brakes kits are srw only and require 17”+ wheels.

    https://lugnut4x4.com/product/77-91-chevy-dana-60-disc-brake-kit/

    This kit is for 3/4 ton brakes on the Dana 60. Most would use it to clear 15” wheels. I’m just looking for a brake upgrade. I know the kit works on drw and fits d52 wilwood calipers. Would I be better off staying with stock calipers n rotors ?
     
  2. Craig 85

    Craig 85 Full Access Member

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    Truck Year:
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    Truck Model:
    K30 SRW
    Engine Size:
    454/TH-400/NP205
    I pulled these numbers off Rockauto. It seems like you would be loosing by switching to the 3/4 ton equipment. The caliper pistons appear to be the same size.

    1 Ton dual wheel
    Brake Rotor Diameter, Outer (IN) 12.875
    Brake Rotor Thickness, Nominal (IN) 1.535

    Pad
    Plate Height, Inner (IN) 2.580
    Plate Height, Outer (IN) 2.760
    Plate Length, Inner (IN) 7.200
    Plate Length, Outer (IN) 8.120


    3/4 Ton
    Outside Diameter (in) 12.5
    Nom Thk (in) 1.295

    Pad
    Plate Height, Inner (IN) 2.760
    Plate Height, Outer (IN) 2.584
    Plate Length, Inner (IN) 7.220
    Plate Length, Outer (IN) 7.770
     
    Lu Blunt likes this.
  3. Lu Blunt

    Lu Blunt Full Access Member

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    Truck Year:
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    Truck Model:
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    Engine Size:
    350ci
  4. bucket

    bucket Super Moderator Staff Member

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    Personally, I'd stick with the stock stuff. The stock 1-ton calipers are pretty strong.
     
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  5. Nonstop

    Nonstop Full Access Member

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    Truck Year:
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    Truck Model:
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    Engine Size:
    454
    I would stick with the 1 ton stuff as well. Try new rotors and rotate your tires. I spent a lot of time checking into brake upgrades, and anything I found requires custom machining and such. For a while I was using dual piston C3500hd calipers, but I did not like the pedal travel (using c3500HD master) and it still had a lot. I eventually went back to the stock calipers and they seemed to work the best.

    On a side note - I had the rear discs as well. I went back to drum. I did not realize how much I missed a parking brake (Caddy calipers do not hold).
     
    Last edited: May 30, 2019
  6. shiftpro

    shiftpro Full Access Member

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    You can run 3/4 ton brakes on the front of the one ton. Better modulation, just as strong and some 40 lbs gone.
     
  7. Lu Blunt

    Lu Blunt Full Access Member

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    Engine Size:
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    I ended up having the rear drums rebuilt with new shoes n seals. Cost $400 which considering the disc conversion is $300 plus labor, I think it was the cheaper solution. The disc conversion requires spacers and lugnut4x4 offered some free of charge but I prefer not use spacers. Truck stops 100% better. Still have alittle shake upfront I assume from the warped front rotors. I’m looking at ordering rotors n calipers from https://torqueking.com/category/1977-1991-gm-k3-dana-60-front-axle/

    Twice the price of rockauto/1aauto but from what I understand they manufacture in house. Worth the money or no?
     
  8. BBBURB

    BBBURB Member

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    Engine Size:
    454 7.4L
    Ive had the shakes up front and I solved the issue by bleeding the brakes. The dam brake fluid was water logged and it felt like warped brake rotors. Just a simple bleed and new juice did the trick. Brake fluid should be nice and clear like fresh water.
     
  9. nvrenuf

    nvrenuf Full Access Member

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    Truck Year:
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    Truck Model:
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    Engine Size:
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    Why wouldn't the Torq big brake kit work on a dually D60? The calipers and brackets are the same as an SRW and the only difference in the rotor is the hole sizes for bolts vs studs.
     

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