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14 bff or 14bsf 15" wheels?

Discussion in 'The Garage' started by franco802, Dec 30, 2006.

  1. franco802

    franco802 1/2 ton status

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    One thing I did search for before asking this is, if 15" wheels will fit a 14bff or 14bsf rear. I found mixed reviews on this because of drum size. So anyone here have a clear answer? Some people say yes, some no. I have brand new 35x12.5 15 bfg muds on my rig. I don't want to go out and buy new 16's.
     
  2. iwaxmyjimmy

    iwaxmyjimmy College web wheeler Premium Member

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    15 wheels will clear both i believe. its just the front 60s u have to grind the caliper. are u goin w/ a 8 lug conversion on the front 10 bolt?
     
  3. franco802

    franco802 1/2 ton status

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    I will in the near future.
     
  4. iwaxmyjimmy

    iwaxmyjimmy College web wheeler Premium Member

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    i thought about doing that, but im just gonna save for 1 tons and do it all at one time. ive still gotta do something w/ my factory 10 bolt rear. do u know how i can find out if ive got a gov bomb or limited slip?? i looked in the glove box and evidently the previous owner replaced it and so no stickers. and i dont wanna pull the cover off yet. ive got a ring and pinion to put in there but i need to know if i just blew the spider gears or if i blew the gov loc. and u cant put a lock right in the gov lock can u??
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    15's clear the FF 14, but the SF might need a bit of grinding on the drums to make the 15's clear. The SF drums tuck farther into the rim and on my buddy's truck that had a 14 SF we had to grind down the fins on the drums a little to ge the rims to seat.

    8 lug 10 bolt front or D44 will need some grinding, and a D60 front will need a fari amount of grinding to get 15's to fit.

    Rene
     
  6. iwaxmyjimmy

    iwaxmyjimmy College web wheeler Premium Member

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    or run wheels w/ 2.5 backspacing or less right??
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Less backspacing means less grinding...but it also means tires sticking further out and a bit more stress on wheel bearings.

    Rene
     
  8. franco802

    franco802 1/2 ton status

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    Some excellent info, thank you.
     
  9. b454rat

    b454rat 1/2 ton status Premium Member

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    I have 2 sets of 15" 8 lugs. 1st set is an 8" wide with IIRC 4.25" b/s. My 89 has a 14ff from a 3/4 ton with slip on drums. They hit the fins on the drum, but some washers to see if it would clear, and with about 1/2" or so it was fine. (Didn't drive it like this!!!!) Other set is 12" wide with 3.25 or 3.5, can't remember. They clear no problems.
     
  10. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    Ah crap.....


    I thought the 14bsf I was going to buy would be more bolt on than that. :mad: :angry1: :angry1:
     
  11. iwaxmyjimmy

    iwaxmyjimmy College web wheeler Premium Member

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    ive seen a disc brake swap for it, and it uses dana 44 rotors. so will it clear a regular 15 wheel? also caddy calipers are used to retain the parking brake
     
  12. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    I know I have been searching on this site for 2 days on how I can connect my e-brake cable to Caddy calipers. I think i need some sort of arm, but GM discontinued the part so maybe I am SOL. :rolleyes: :mad:

    EDIT: Sorry found the answer ;)
     
    Last edited: Dec 30, 2006
  13. MaxPF

    MaxPF 1/2 ton status

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    They are talking about 8 lug 14bsf's with the big drums. 15 inch wheels fit just fine on 6 lug 14bsf drums :wink1:
     
  14. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    I think I might just disk brake my 14bsf when I get it :wink1:
     
  15. franco802

    franco802 1/2 ton status

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    Only thing that scares me is, I have seen alot of threads in here with people not having any pedal after a rear disc swap:confused:

    I am still kinda having thoughts on either just leaving it with drums or doing the swap with the ebay kit.
     
  16. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    the 14bsf have 2 different drum sizes, as does the 14bff. the smaller 11" brakes will clear no problem. the 13" brakes should clear, depending on the back spacing. i have no problem clearing either with the 2.75" backspacing on my wheels.
     
  17. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    Ya I heard that too. I thought it was because the calipers where positioned incorectly :dunno:
     
  18. MaxPF

    MaxPF 1/2 ton status

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    It's up to you. Personally, I chose to use the drums because they are already on the axles, they simplify e-brakes (because they are built in), and they work well (especially since they are a bit larger than 1/2 ton drums). This is probably why GM has gone back to using drums on the rear of trucks :wink1:
     
  19. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    I was thinking that drums would eliminate A TON of guess work. And would be cheaper too. Plus my 1/2 ton brakes with rear drums do a decent job too.

    But one question is: Does anyone know for sure if the 8 lug drums and the 6 lug drums were the same size? And will interchange along with the 6 lug axel shafts I'd put in? Or rather: are the 6 lug drums the 11" or 13" or available in both sizes?
     
  20. MaxPF

    MaxPF 1/2 ton status

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    When we were picking up my buddies' 6-lug 14bsf the other day I looked at an 8 lug axle. The drums are definitely different, but the backing plates and hardware may be the same (this is the 11" version, of course). I couldn't tell for sure, though...
     

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