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rear disk conversion

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by gmcjimmy4x4, Jan 26, 2006.

  1. gmcjimmy4x4

    gmcjimmy4x4 1/2 ton status

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    I recently istalled a rear disk brake conversion on my rear 14 bolt ff. Does anyone know what i need to change in the combination valve. Its a 91 gmc jimmy with rear antilocks i think.I think its something to do with the porportioning valve and i already added a new valve just before the split at the rear axle.
     
  2. shane74

    shane74 1/2 ton status

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    What kind of pedal problems are you having?
     
  3. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    Are your rears locking up before your fronts or something like that?
     
  4. gmcjimmy4x4

    gmcjimmy4x4 1/2 ton status

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    Its not locking up.They seem to be working properly, but i was told that their was a factory valve limiting rear brake presures subsequently the rear brakes wouldnt get full potential of its braking ability.
     

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