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Master Cylinder swap??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 90blzr, Apr 6, 2001.

  1. 90blzr

    90blzr 1/2 ton status

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    I think I have heard of people swapping out the master cylinder to one out of a 3/4 ton or 1ton. When is it necessary to do this and is it mandatory when changing axles??
     
  2. Burt4x4

    Burt4x4 3/4 ton status

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    I have heard of swapin in the booster/master as a complete set from like a 1ton or 3/4ton. Duno if just a mastercylinder would increase your breaking or not???

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
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  3. bablazer73

    bablazer73 1/2 ton status

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    If you have upgraded to 3/4 ton axels, I would use the 3/4 master cylinder. The 3/4 ton rear wheel cylinders are larger and need more fluid to operate. I would not use a 3/4 ton master on a 1/2 ton brake system. they could get very touchy. If you decide to change masters, use one from similar year truck. The pilot hole changed from early to late and the don't fit.

    your right. I don't understand the jeep thing!
     
  4. ken

    ken 1/2 ton status

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    Not necessary. I am running one ton axles (rear 14 bolt with the huge 13" brakes, and Dana 60 front with huge calipers) on my 1990 1/2 ton Suburban. The 1/2 ton MC has worked just fine...and the axles have been under there for 50,000 miles.

    ken
     
  5. 90blzr

    90blzr 1/2 ton status

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    Well if it works on that big ol' burb then I'm sure it will be fine on my K5. Thanks for the input.
     
  6. BurbinOR

    BurbinOR 3/4 ton status

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    You have just answered an important question - thanks Ken. I am doing the D60/14FF swap in the next month or so and wondered about this.

    <font color=orange>'79 - 406 TPI -<font color=orange> K5#5 - <font color=blue>See it at---&gt;<A target="_blank" HREF=http://www.blazzinor.coloradok5.com>http://www.blazzinor.coloradok5.com</A>
     

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