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The only real difference between 1/2 and 3/4 ton brakes is the bolt pattern and when you jump up to 1 ton they are hydrauliclly powered instead of vacuum powered
I would have to disagree there..yes the bolt pattern is different, but the rotors are usually larger diameter and sometimes thicker(depending on year and model) and the drums will be wider and also larger diameter. At least that is my experience with most brake systems on these trucks and Blazers. Just my 2 cents worth!
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