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14 bolt drum size???

Discussion in 'The Garage' started by suntadz, Apr 4, 2007.

  1. suntadz

    suntadz 1/2 ton status

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    I just got a 14ff and was going over everything before I start to disassemble and realized it had 16" drums on it. I thought they looked massive. I was under the assumption that they had the same 13" drums my 10 bolt had. Were there different drums for these axles? I have new 15" rims and tires and am a little discouraged about this. Would hate to have to get a whole new tire and wheel combo and try to sell the ones I just bought. My other option would be to convert to disc but thats more time and money that Im running out of. Anyone got any ideas for me? Can I bolt on my 10 bolt drums:confused: didnt think so....just checking. I was hoping there was a another solution that Im not aware of. thanks
    The axle looks good. It was a 1 ton converted to fit my 1/2 ton. Has 4.56's with a detroit and the push in style e-brake cables.
     
  2. 4xcrazy

    4xcrazy 3/4 ton status

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    you are either reading your tape measure wrong, or possibly have a rear diff from a bigger truck,,,,13" brakes are the "bigger" ones for a 14bff.

    you're 10 bolts should have something like 9" or 10" brakes, or something like that, don't remember right off...
     
  3. suntadz

    suntadz 1/2 ton status

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    well maybe i am measuring in the wrong spot. I was measuring the backing plate behind the drum. it was 13" on my 10 and 16" on the 14ff. is that the wrong place to measure?
     
  4. 4xcrazy

    4xcrazy 3/4 ton status

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    inside actual drum surface, where the brake shoes make contact.

    you CAN fit a 15" wheel over a 14bff 13" brake drum too :D
     
  5. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Close. The smaller 14FF drums are 11".
     
  6. 4xcrazy

    4xcrazy 3/4 ton status

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    not even "close" i didn't mention anything about the "smaller 14bff drums"

    i was talking about his original 10 bolts,,,i haven't had them in quite some time, so i haven't worked on them in quite some time, didn't remember the measurement right off,,,,

    but thank's for trying:wink1:
     
  7. 87BrnRsd

    87BrnRsd 1/2 ton status

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    There are two drum sizes for the 14. The "smaller" 11" drum and the larger 13" drum. I dont know what the size is for a 10b drum since I ditched mine a long time ago, but I do know that it is a lot smaller than a 14 drum. Regardless of if you have the small 11" drums or the big 13" drums, your 15" wheels will fit over them.
    -Harrison
     
  8. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Actually, there are three drum sizes for the 14's.

    11"
    13" x 2.5" OR 2.75" (can't remember right off the bat)
    13" x 3.5"

    The 3.5" wide ones are a true 1 ton. The other two are 3/4 tons.
     
  9. suntadz

    suntadz 1/2 ton status

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    cool thanks for the replies. I guess i have the 13" ones. On my 10 bolt the back of the drum is still inside the wheel so i thought it would be the same for the 14ff. I forgot that the drums were 4" wider on the 14ff so the back half will be outside the wheel. Glad to here my rims will work. Once i get it in a better spot ill fit the rim on the axle to make sure before i mount it. Guess it was a last minute panic attack i had when i started looking at it without fully investigating. just trying to get all my ducks in a row before i tear it down again to eliminate all the surprises.
     
  10. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Hopefully your new rims are 8 lug otherwise they aren't going to fit.
     
  11. suntadz

    suntadz 1/2 ton status

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    ha-yea there 8 lug... I got that part atleast. I got eaton 15" 8lugs.
     
  12. thatK30guy

    thatK30guy 1 ton status Premium Member

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    No worries. They will fit just fine. Worry about making them fit the front instead.
     
  13. cdoggwsu

    cdoggwsu 1/2 ton status

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    I'm looking at a '75 or '76 3/4 ton 14-bff at the moment and I was told it has the smaller drums...11" by the sounds of it. Are there any benefits to running one size over the other? I just picked up a set of stock chevy 16x8 8-lug wheels, so clearance either way wouldn't be an issue.
     
  14. suntadz

    suntadz 1/2 ton status

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    no benifit with having the bigger brakes on a 1/2 ton. The 11" would actually be better so they dont hang out so much. I ended up converting to disc anyway.
     
  15. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Actually, the larger brakes will stop better. Also it doesn't matter if you have the 11" or the 13" brakes the axle width is the same.
     

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