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  1. #1
    Sr. Apprentice
    Join Date
    Nov 2008
    Location
    Forest Grove, Oregon.... for now
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    31

    Default 1/2 ton to 3/4 ton axle swap.

    I really suck at using search features... I'm sure this has been asked before.
    What all is involved if I want to put 3/4 ton axles under my 1/2 ton '89 suburban?
    I want to change the gear ratio and all, so a swap is best.
    I will be putting a Dana 44 in front and a 14 bolt in back. Both will be 3.73 gear ratio.

    Do I need to change out the leaf springs too?
    If I do need to change them.... will truck springs work?

    Will The drivelines need any modification?
    If so please explain............

    If you have a better option let me know, but it needs to be cost effective.

    Thanks!

  2. #2

    Default

    what axle is in the front at the moment? is it IFS?
    PETE
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust


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  3. #3
    Sr. Apprentice
    Join Date
    Nov 2008
    Location
    Forest Grove, Oregon.... for now
    Posts
    31

    Default

    It's got a 10 bolt solid axle with 3.42 gears.

  4. #4

    Default

    I would guess they would bolt right up, but the driveshafts may need to be changed. it is leafs up front right?
    PETE
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust


    Contact this GMTC Moderator for any problems or questions you may have :great:

    Join the GMTC Facebook Group!!! Join Here

  5. #5
    Sr. Apprentice
    Join Date
    Nov 2008
    Location
    Forest Grove, Oregon.... for now
    Posts
    31

    Default

    yup! leafs up front....
    I hope the drivelines aren't an issue..... but if they are I need to buy more parts, so that's OK.

  6. #6

    Default

    yea the expensive thing may be driveshafts. you could also maybe find a shop around you that will modify your stock one for you to fit also. will you be getting 3/4 ton leaf packs too?
    PETE
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust


    Contact this GMTC Moderator for any problems or questions you may have :great:

    Join the GMTC Facebook Group!!! Join Here

  7. #7
    Sr. Apprentice
    Join Date
    Nov 2008
    Location
    Forest Grove, Oregon.... for now
    Posts
    31

    Default

    what do you mean leaf packs?

  8. #8

    Default

    the leaf springs
    PETE
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust


    Contact this GMTC Moderator for any problems or questions you may have :great:

    Join the GMTC Facebook Group!!! Join Here

  9. #9
    Sr. Apprentice
    Join Date
    Nov 2008
    Location
    Forest Grove, Oregon.... for now
    Posts
    31

    Default

    I'm not sure yet.... That's why I posted this thread. If I don't need the leaf springs I will just start buying the axles.... If I do need them I will look for a parts truck. That's why I asked if I needed them and if truck ones would work. Thanks.

  10. #10

    Default

    the ones you have now should work. and how much are you looking to spend on axles?
    PETE
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust


    Contact this GMTC Moderator for any problems or questions you may have :great:

    Join the GMTC Facebook Group!!! Join Here

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