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Disk brake rotors for rear...

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by dyeager535, Apr 4, 2002.

  1. dyeager535

    dyeager535 1 ton status Premium Member

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    Anyone happen to know of any 6 lug rotors that will fit the rear, that are 1" thick? The 79-85 El Dorado calipers look easy to adapt, and the bolt pattern for the backing plate/caliper bracket APPEARS to be the same flange bolt pattern as the trucks (meaning the whole assembly might bolt on "easily") ... if I can find rotors that are six lug, 1" thick, with same bolt pattern, I can at least mock them up, to see if its worth it over the 76-78 Calipers which are pricier and rarer.

    Bigger is better, I know, but $40 for the entire setup I couldn't pass up. Definitely going to use them on my car, but if the same setup will work for the truck, it will simplify things.
     
  2. arq

    arq 1/2 ton status

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    i think TSM uses "machined" 4x4 front rotors. youhave to machine the inside of the rotor so it will fit over the rear axle.

    ARQ.
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    Yeah but the fronts are (IIRC) 1.25" and only the 76-78 El Dorado calipers were big enough to use in that application. If I can find thinner six lug rotors, I can use the easier to find (albeit smaller) 79-85 calipers. I'm sure they aren't as good to use as the 76-78's, but with a relatively light truck and relatively small tires (compared to others on here lol) I think they'd work ok.
     
  4. fr8train

    fr8train 1/2 ton status

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    What about toyota rotors?
     
  5. 90K5

    90K5 1/2 ton status

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    Also the newer GM trucks have disc brakes in the rear, and are all 6 lug. I think Nissans and Toyotas are too.
     
  6. Nrose07

    Nrose07 1/2 ton status

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    Use the front rotors off a 88-95 pickup 1/2 ton 4x4.
     
  7. Scooter

    Scooter 1/2 ton status

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    88 - newer 1/2 ton 4x4 front rotors .. there are 2 sizes avail .. 1" and 1.25" .. I used the 1" and instead of trying to machine the inside of the rotor i turned down the end of the axle flange .. I only needed to take off about 1/16" to get then to clear.
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    Hmm. I'll have to take the Cadillac one with me to the local auto parts store and see how similar they are. I would just hope all the dimensions are the same or similar. Thanks for the tip!
     
  9. m j

    m j 1/2 ton status

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    no kidding
    why make the service item custom one off
     
  10. Scooter

    Scooter 1/2 ton status

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    that was my thought on it too. didnt make sense to do it any other way.
     

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