7 1/4 To 8 3/4 drum brakes

Brakes for your Classic Mopar

  1. 65Val

    65Val Average Length Member

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    Drums swap....and lug nuts...other than that, not much.
     
    • Disagree Disagree x 1
    • Jimacuda

      Jimacuda Well-Known Member

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      For A body 10" small bolt pattern rear brakes the parts interchange between the 7.25 rear and 8.75 rear brakes is everything EXCEPT the backing plates.
      Offset and axle mounting flange are different.
      One plate WILL NOT bolt in place of the other.

      part numbers for shoes, wheel cyls., etc. are the same for both.

      8.75 axle shim placed over 7.25 small bolt backing plate. Makes it a pretty obvious no-go.

      100_4435.jpeg
       
    • 65Val

      65Val Average Length Member

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      Why do you disagree? I just did this swap, and my old 7.25 drums fit my new 8.75 rear end perfectly. backing plates did not swap.
       
    • Jimacuda

      Jimacuda Well-Known Member

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      its the "other than that, not much" part thats wrong.
      its virtually EVERYTHING except the backing plates.
      not just drums and lug nuts.
       
    • 65Val

      65Val Average Length Member

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      Well, I never reuse old brake hardware, and since the rest was new, I put all brand new hardware on my 8.75, other than drums, so I didn't know that.
       
      Last edited: Jan 11, 2020
    • Jimacuda

      Jimacuda Well-Known Member

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      Stuff doesnt rust so much here so parts like levers and struts dont go bad.
      Springs if they look good, but cups springs pins new if available.:thumbsup:
       
    • charger426

      charger426 Well-Known Member

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      damn, three year old thread back form the dead.
       
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