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3/4 or 1ton swap

Discussion in '1992-Present Chevy & GMC models' started by rjfguitar, Nov 27, 2003.

  1. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    Did a search but it never works like always. I wan't to buy a 96' or later 2door tahoe(Blazer) and I am wondering how hard it would be to swap out the 1/2 ton junk for some 3/4 or 1 ton stuff. I did this ,like many of us did, to my 85K5 and would like to have 2 3/4ton blazers. The rear is basically bolt in with a late model 14BFF right? As far as the front if I took off the whole front suspension and had a complete 8 lug front susp, diff, cv shafts... would it bolt directly in? Could I still use a lift made for the 8 lug truck? Would there be an electronic problems like ABS or the front 4wd diff engagement? thanks for any help. /forums/images/graemlins/thinking.gif
     
  2. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    ah hem /forums/images/graemlins/smile.gif
     
  3. COCHEV

    COCHEV 1/2 ton status

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    try a search over at offroad.com. i'm pretty sure its been covered to some extent over there. they have an ifs forum. do you have a doner truck for the swap or are you going to buy it all from the junkyard? wonder if the cost and work will be more then going to a solid front axle?

    have you concidered doing the SF 14 bolt 6 lug rear end?
     
  4. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    I can get all the parts at a truck only yard for realativly cheap because I have bought a lot of stuff for my K5 from him. I don't know what all the front stuff would cost but I can have ANY 14BFF he has for $100. I have thought about the SF14B but the prob is they literally go for 800 to $1000 bucks for one around here. Besides I want to have all 8 lug anyway because then I can switch tires and wheels with the K5 if necessary. I don't really want to do a SFA swap because it's harder with the newer trucks and I don't mind IFS at all on a non wheeling DD.
     
  5. bowtiepower00

    bowtiepower00 1/2 ton status

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    I've never seen it done, and if I recall most of the mounting bolts, etc, are different between the two. It may be possible, but I doubt it. You should be able to grab an 8-lug 9.5" and buy 6-lug axles and convert it to disks for a reasonable price if you need more strength.
     
  6. j20m715

    j20m715 1/2 ton status

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    The 3/4 ton & 1/2 ton ifs stuff is different sizes (wont fit).

    I am doing the same thing with a 99 2 door tahoe.
    I am using a ff14 bolt from a 94 3/4 ton burb (was a bolt in deal, except for the park brake cables & u-joint). I havent had a chance to see if I can swap the cables from the 10 bolt yet.

    frt is a solid frt axle.

    I think the solid frt swap is about the same amount of work as the ifs frt kit.

    Mine will be an extra/daily driver, but I choose the solid frt axle for stength & durability.
    Build it right the first time.
    The money "you think you saved" on doing the ifs kit will quickly be spent on repairs to keep the frt end together (idler arm, pitman arm, tie rod ends, numerous alignments, & worn tires).

    This is just my opinion, take it how you will.
    Keep us posted on your choices & your progress.
     
  7. rodzzilla

    rodzzilla 1/2 ton status

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    If the front swap will not work, I wonder if you could get a set of 6 to 8 lug spacers made?

    I was looking in the LMC catalog yesterday. They list the LCA as the same for 1/2 and 3/4 tons. Might be able to put a 3/4 ton ball joint in a 1/2 ton Upper Control arm? Wish I had access to a Hollander manual.
     
  8. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    That is an idea, I also liked the idea of having the 9.25 front diff with 4.10's. I wonder if the bigger diff would bolt in with the 6 lug shafts. I don't want a strait axle under a DD tahoe because I like the way IFS rides and looks plus you have to deal with the ABS.
     
  9. COCHEV

    COCHEV 1/2 ton status

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    [ QUOTE ]
    I don't want a strait axle under a DD tahoe because I like the way IFS rides

    [/ QUOTE ]

    me too. i will most likely take the 6 lug SF 14 bolt rout. that is uless i happen apon a furd high pinion 60 some how /forums/images/graemlins/grin.gif /forums/images/graemlins/thumb.gif
     
  10. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

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    [ QUOTE ]
    plus you have to deal with the ABS.

    [/ QUOTE ]

    Deal with it? I just cut all the wires.
     
  11. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    [ QUOTE ]
    [ QUOTE ]
    plus you have to deal with the ABS.

    [/ QUOTE ]

    Deal with it? I just cut all the wires.

    [/ QUOTE ]
    Thats a great idea. /forums/images/graemlins/rolleyes.gif /forums/images/graemlins/wink.gif. Did it cause any probs with the computer or lights coming on?
     
  12. u2slow

    u2slow 1/2 ton status

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    [ QUOTE ]
    Wish I had access to a Hollander manual.

    [/ QUOTE ]

    Ahhh... but you DO! /forums/images/graemlins/cool.gif

    www.car-part.com will give you a list of hits as long as your arm for a specific part with the model/year info attached.

    www.mypartshop.com will give you the actual Hollander number when you do a "view source" on the web page.

    IIRC, the lower control arms are the same for K1500, K2500, & K3500 although there is a cast version and a stamped/welded one. Its the upper arm that's different somehow.
     
  13. rodzzilla

    rodzzilla 1/2 ton status

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    Sweet. Thanks. /forums/images/graemlins/thumb.gif
     
  14. daleearnhardt01

    daleearnhardt01 1/2 ton status

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    Is it possible to swap in a 8 lug hub/bearing in the front?
     
  15. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    I was curious about this same thing, but we just ended up doin a SAS. I dont see why, if you got all the 8 lug 3/4 front parts, why the wouldnt bult up, unless the 1/2 ton mounts are differrent.

    [ QUOTE ]
    [ QUOTE ]
    [ QUOTE ]
    plus you have to deal with the ABS.

    [/ QUOTE ]

    Deal with it? I just cut all the wires.

    [/ QUOTE ]
    Thats a great idea. /forums/images/graemlins/rolleyes.gif /forums/images/graemlins/wink.gif. Did it cause any probs with the computer or lights coming on?

    [/ QUOTE ]

    Just pull the fuse, and the bulb in the dash, the computer will never know it was there.
     
  16. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    Isn't the ABS tone ring on the x-fer case?
     
  17. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    [ QUOTE ]
    Isn't the ABS tone ring on the x-fer case?

    [/ QUOTE ]

    Yes, its the VSS, that senses the rear though.
     
  18. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    Thanks, still trying to learn these.
     

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