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14 bolt FF drums, sizes ?

Discussion in 'The Garage' started by R72K5, Dec 8, 2003.

  1. R72K5

    R72K5 Banned

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    what are the sizes of 14 bolt FF drums and what do you have to swap with drums in order to swap from one size to another ? backing plates ? bearing spindles ?

    thanks
     
  2. Confedneck

    Confedneck 3/4 ton status

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    13 and 11 i believe, you would have to swap everything from the backing plates out..as everything is proportionate..
     
  3. HarryH3

    HarryH3 1 ton status Author

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    Something around 11 and 13 inches. The smaller ones look WAY smaller when you see them, as they are also narrower. The backing plates have to match the drum size, but the spindles are welded to the axle tubes, so are not interchangeble.
     
  4. Fubeca

    Fubeca 1/2 ton status

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    I think there are 3 sizes, 11 and two different 13 inch sizes. The one ton drums are wider than the 3/4 ones.
     
  5. Confedneck

    Confedneck 3/4 ton status

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    i think you're right about the two 13" sizes...all the spindles on FF are the same size i beleive...so its just backing plates, hardware, shoes and drums..
     
  6. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Yes, there are 13 x 2.5" and 13 x 3.5" like the 1 ton trucks have.
     
  7. woody9

    woody9 1/2 ton status

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    loosely translated, if you need a drum.. the prices are Holy $hit! and about twice that! PER SIDE! /forums/images/graemlins/rotfl.gif
     
  8. thatK30guy

    thatK30guy 1 ton status Premium Member

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    3/4 ton uses 2 different size drums, plates and shoes.
    11" x 2.75" is one size.
    13" x 3" is the other.

    1 tons have only 1 size and parts are not interchangable with the 3/4 ton brakes.
    13" x 3.5" is the 1 ton size brakes.
     
  9. mouse

    mouse 1/2 ton status

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    I just did the rear brakes on my K20 Saturday. Luckily I still had enough material to turn the drums, new ones were around $100 each, not including bearings and races or seals. Still with turning them it cost me just over $100 total - new shoes, axle seals, hardware kit, fluid, etc. and all day Saturday. Those are 11.25" brakes on mine.
     

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