Advice / help before ordering eaton diff

Discussion in 'Axles + Brakes' started by 95bucket, Apr 19, 2017.

  1. 95bucket

    95bucket Supporting Member

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    so ive decided that an eaton trutrac is best for my truck since it's mostly on road and any off road stuff I do will not likely result in one wheel off the ground in which case I could just e brake the axle if need be. That would be really rare. Not looking to make this an off road monster. I'd get a non IFS truck for that.

    Anyway, just checking with the forum to see what axle I have so I can order correctly. I have a 95 Cheyenne k2500 4wd 5.7 with a 14 bolt diff cover and 6 lug hubs. I'm 99% sure I have semi floating axles and a 10.5" diff. Can someone confirm? The code in the glove box is GT4 but I think that just means it's got a 3.73 ratio.

    Thx for the help.
    Search feature didn't yield anything useful although this had to been covered somewhere here. Posting a link for me would be great too
     
  2. Tavi

    Tavi Vehicle enthusiasts

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    It should be a 14 bolt 9.5 semi floater.
     
  3. Jorge6.5

    Jorge6.5 I'm Awesome

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    Yep, 9.5" ring gear
     
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  4. 95bucket

    95bucket Supporting Member

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    Thx guys
     
  5. Brother Al

    Brother Al I'm Awesome

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    They are absolutely right. You have a K2500 "Light Duty".

    Here's a breakdown of the axle usage. (This is just axles, not all the parts used).
    K1500 = 6 lugs & 10 Bolt 8.5" common
    K1500 "Heavy Half" RPO F44 = 6 lugs and 14 Bolt 9.5" Semi-Floater ("SF" in forum speak)... essentially a 1500 with Light Duty 2500 suspension... in-between 1500 & 2500 LD GVW...
    Optional on Z71 pkg, Standard on Ext. Cab w/ Longbed 4x4, fairly rare option.
    K2500 "Light Duty" = 6 lugs & 14 bolt SF somewhat uncommon, pretty much a heavy half, but with a slightly higher GVW IIRC.
    K2500 = 8 lugs & 14 bolt SF (most common 2500 variant)
    K2500 "Heavy Duty" = 8 lugs & 14 Bolt Full Floater ("FF" in forum speak)...essentially a 2500 with 3500 suspension. Somewhat uncommon.
     
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  6. Brother Al

    Brother Al I'm Awesome

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    Seems kinda dumb for GM to do things this way, but it was done to offer consumers a large selection of GVWs to help sell more trucks.
     
  7. Tavi

    Tavi Vehicle enthusiasts

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    I believe the sales had a lot to do with tax and registration fees. Don't want to pay more for something you don't use as it should be.

    Now days with the price tag on new trucks. Who cares what registration fee are.

    Plus a lot of the new ones are fashion statements, with little regard for price.
     
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  8. Tavi

    Tavi Vehicle enthusiasts

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    You wouldn't happen to know the corresponding GVWR of each would you?
     
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  9. Brother Al

    Brother Al I'm Awesome

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    Offhand, no. Im sure its on this forum somewhere.
     
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  10. Tavi

    Tavi Vehicle enthusiasts

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    Thanks. I'll have to dig around. It is rather funny how many 2500 variants there were.
     
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