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Locked Rear?

Discussion in 'The Garage' started by longbedder, Apr 17, 2007.

  1. longbedder

    longbedder 1/2 ton status Premium Member

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    I just picked up a '94 Burb K2500 - sweet deal BTW. It's got a TBI 454 with a Whipple supercharger and 4L80E.

    Anyway, it has a 14BFF and I was wondering if those axles came from the factory that year with any sort of traction devices. Part of my RPO list is obscured, but if you are aware of any to look for, post 'em up.
     
  2. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    if it says G80 then its got a gov-loc.
     
  3. BulldogK5

    BulldogK5 1/2 ton status GMOTM Winner

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    I didn't think you could get a ff in a 'burb after about '88-'89. Otherwise, yeah, G-80 is the only code I know.
     
  4. Beast388

    Beast388 1/2 ton status

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    Yep, the 1992-99 K2500 Burbs with the 454 got the 14BFF.:D
     
  5. longbedder

    longbedder 1/2 ton status Premium Member

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    So the Gov-Loc was the only factory traction device they put in 'em in 1994?
     
  6. goldwing2000

    goldwing2000 Guest

    If your RPO codes are fubar, best bet is to pull the cover and have a look. Once you get it off, it'll be obvious what's in there and then you can inspect the gears and change fluid while you're poking around.

    Alternately, you can run the numbers stamped into the top of the right side tube.
     
  7. Beast388

    Beast388 1/2 ton status

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    The Gov-Loc was the ONLY factory traction device available for the 14BFF ever......(excluding military vehicles):wink1:
     
  8. goldwing2000

    goldwing2000 Guest

    I could have sworn some of them came with posi. :thinking:
     
  9. 76zimmer

    76zimmer Flyin Rat Premium Member GMOTM Winner

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    I have service manuals from 74 and 85, neither mention a posi, only the Gov-lock, in the GM full float axles. The Dana axle has the PowerLok unit.
     
  10. goldwing2000

    goldwing2000 Guest

    Hmm... interesting. *shrug*
     

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