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78 1ton master cylinder ?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BigMac, Oct 12, 2002.

  1. BigMac

    BigMac 1/2 ton status

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    OK, I picked up a 78 1 ton master cylinder... Im looking at the resiviors and the front one is smaller than the back one, big time. Is the front res for the rear brakes?

    On my half ton the front is the front....

    any help before I tear my old one off s greatly apreciated...

    /forums/images/graemlins/truck.gifthis kinda looks like my truck
     
  2. RaisedK5

    RaisedK5 1/2 ton status

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    i discovered the same problem when i put a 3/4 ton Master in my truck, but after actually reading my factory manual, i found out that yes on 3/4 and one ton masters, the front is the back and the back is the front, just bend the lines a little and hooker' up. /forums/images/graemlins/cool.gif
     
  3. TorkDSR

    TorkDSR 1/2 ton status

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    the bigger one is usually the for calipers...they take a lot more fluid to use. pict ure the piston in the caliper, then picture the size of the wheel cylinders...then it makes sense

    RYan
     
  4. BigMac

    BigMac 1/2 ton status

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    Just as I thought... Im fabbing new hard lines right now that go from the master to the praportioning valve...

    none of the damn fittings are interchangeable...
     
  5. BigMac

    BigMac 1/2 ton status

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    well damn... it seems I need a new booster to get this dang thing on too.... the shafts are different lengths.
     

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