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Do I have a full or semi-floating axle?

Discussion in 'Chevy Trucks' started by GLS, Mar 31, 2003.

  1. GLS

    GLS Senior Member
    Messages: 248

    I have been searching for a while now, and I didn't have any luck. So here goes:

    Does my truck have a full-floating rear axle, or a semi-floating rear axle? How can I tell the difference?

    The truck is a 1995 K2500 (8600 GVW--8 lug, not LD).

    I've been wondering for a while now:confused:
  2. JohnnyU

    JohnnyU 2000 Club Member
    Messages: 2,037

    Go pull the rear centercap off, if there is something stickingout through the rim its a full floater, if not, its just a semifloater.

    I think you have just a semi floater.

  3. VictoryRedK1500

    VictoryRedK1500 Member
    Messages: 47

    I believe Snowybowtie is right...i also think you have the semi-floater. I saw a picture of your truck here not too long ago from the rear, and I was able to see the rear axle on your truck. It is the 9.5" GM 14 bolt, which has the "semi-round" shaped pumpkin. The 10.5" Gm full floater is pointy shaped at the bottom of the pumpkin. Hope this makes sense to you. I've seen 88-98 GM 2500 HD's with both the full floater and semi floater, and it makes me curious as to why they do that. It is supposed to be an HD....why not stick with the 10.5"? Must be they are just using what is readily available in the parts bin.

  4. Chuck Smith

    Chuck Smith 2000 Club Member
    from NJ
    Messages: 2,317

    Lighter = better fuel mileage. That is what the 80's brought to all vehicles. After the gas crunch, plastic started replacing many parts that were metal, and aluminium started replacing cast iron (hence the NP 208).

    If your rear axle end looks like this (minus all the rust) you have the 14 bolf FF 10.5" ring gear.

    More info on the 14 bolt FF here



  5. sschario

    sschario Member
    Messages: 44


    I have a '93 C2500 and a '94 K2500. Both are 8600GVW and have the full-floater like Chuck describes.

  6. VictoryRedK1500

    VictoryRedK1500 Member
    Messages: 47

  7. GLS

    GLS Senior Member
    Messages: 248

    Thank you all for the replies.

    It must be 9.5" semi floater, as there is no [whatever you call it] like in chucks picture.

    Steve: Do those trucks have either a 454 or diesel? I thought I read somewhere that those two engines get the full-floater, but the 350 comes with the semi.

    Thanks again for the help
  8. VictoryRedK1500

    VictoryRedK1500 Member
    Messages: 47

    I think you've found the answer to the question as to why your truck has the 9.5". The 350 has got to be the reason. Dang, I should have known that. LOL:D
  9. sschario

    sschario Member
    Messages: 44

    Sorry, I have to correct myself. :eek:

    My C2500 has a 454 and FF. My K2500 has a 350 and SF. I realized this morning that I have not had the K2500 apart yet, so I went out and checked. Looks like the engine may be the key?