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K5 to K20 Swap compatability and Plow Frame. Help !

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ji240, Aug 18, 2003.

  1. ji240

    ji240 Registered Member

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    Location:
    East Haddam CT
    Hello

    I have an 89 GMC Jimmy. The guy down the road from me just put his 3/4 ton Suburban up for sale for 1500 dollars. It has a blown head gasket. Both front and rear axles have been redone ( bearings, seals, ball joints. tie rod ends etc. ). It has an 8 ft Fisher Plow. Even the body is in pretty good shape. I beleive the truck is an 88 - 89. He wasnt home to talk to yet. I only took the info he had on the window.

    Heres my thoughts and I would like yours and some advice.
    If I took the axles ( The Suburban has a 14bolt SF in it. ) and put them in my K5 and swapped the plow to my K5 I should have a pretty nice plow rig. The Suburban also has nice mag wheels and new 16 inch tires.

    Are the 3/4 ton Suburban frames the same as the 1/2 ton K5s?
    Will the plow swap over? Should I swap the leaves and all? or just the axles themselves? Do you see any incompatabilties between these? Or anything I may be over looking. I have wanted to do the 8 lug swap for a a while now and this seems cheap and easy.

    My thoughts are if I did this swap I could then put my 1/2 ton stuff in the Suburban and sell that after fixing the head gasket which is cheap and easy to do. I also have a 6 inch lift and 35s I could put on it. I imagine I could get 1000 - 1500 back for the Suburban running and ready to go.

    OK thoughts? Ideas? Let them rip. Is this a bad idea?

    Thanks for reading

    John
     
  2. TorkDSR

    TorkDSR 1/2 ton status

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    Location:
    bucks co pa
    as for plowing:

    plowing with a lift and tires blows. throw a locker in the back and every plow outing turns into off-road recovery. i plowed one season with my k15 jacked up 7" running 38.5s and an auto. i couldnt stand it. after each plowing, i would have to remind myself to let go of the death grip i had on my steering wheel.

    the plow will also get in the way of crossover, and a winch. but it gives a good recovery point.

    as far as i know both frames are the same. the weight of the plow will reak hell on stock k5 springs, making them even flatter /forums/images/graemlins/eek.gif /forums/images/graemlins/eek.gif

    any more info you need? drop an IM TorkDSR

    Ryan
     
  3. ji240

    ji240 Registered Member

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    Thanks for the reply TorkDSR. My plan was to run my Jimmy with the 3/4 ton axles and no lift and the plow. The Suburban would have the 6 inch lift, 1/2 ton gear and no plow. Would be nice I think if this all can be done.

    Thanks

    John
     
  4. ji240

    ji240 Registered Member

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    Anyone else with some comments? ideas? thoughts on this?
    Much Appreciated
    Thanks
    John
     
  5. kennyw

    kennyw N9PHW Premium Member

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    Stevens Pass Highway, WA
    Everything you have planned out is a simple swap. You should have no problems as long as you get conversion u-joints for the rear axles on both trucks. But I would add an extra leaf to the stock pack up front to carry the weight better and re-enforce your frame before pushing any snow.
     

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