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Help - Brakes/Rim Size Question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Ryeguy, Feb 26, 2001.

  1. Ryeguy

    Ryeguy 1/2 ton status

    Joined:
    Oct 30, 2000
    Posts:
    189
    Likes Received:
    0
    Location:
    Victoria, B.C.
    Hi guys,

    I've got an '87 K5 in the process of being built, extremely
    modified. This should be an easy question for right right
    people:

    Known:
    - 6-bolt 15-inch rims fit on the stock 10-bolt front diff, but
    there isn't much room for clearance between the caliper
    and the rim
    - after grinding the calipers, 8-bolt 15-inch rims will fit over
    1-ton brakes (D60 stuff), and there's even less clearance

    Unknown:
    - can the same procedure be used to fit 15" rims over 8-bolt
    3/4-ton brakes?
    - the light-duty 3/4-ton brakes use the same caliper as the
    half-ton, I'm more interested in using the larger piston heavy
    duty 3/4-ton brakes, can this be done? Or do I have to stay
    with the small 6-bolt rim pattern to use the heavy-duty 3/4-
    ton calipers? (I'd like to convert to HD 3/4-ton brakes).

    Why? The 3/4-ton brakes use the GM 2 bolt style mounting,
    where the D60 uses the Bendix style caliper mount which will
    be a lot harder for me to work with for my project. And I'll
    need a bigger caliper than the stock half-ton caliper to stop
    this beast.

    Thanks,

    --Rob
     

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