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axle swap info please

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by just me, Feb 24, 2002.

  1. just me

    just me Registered Member

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    Hello out there, Need some info please. Heres what I have, 84 GMC 1/2 ton swb 4x4 with 462 ci BB, 350 tranny, 208 t-case, frt. and rear 10 bolts with 2.73 gears ( I know, I know). I have a donor truck that is a 73 Chevy 3/4 ton swb 4x4 with, 350 tranny, 205 t-case, D44 frt with 4.09 gears, 14bolt FF with 4.10 gears. I plan on doing a axle swap and need to get all the info I can on what is and is not a direct bolt in. Drive shaft lengths especially. And, if I was to swap the 208 t-case with the 205, would that prevent any modifications to the driveshafts ? I do know that with the 208 t-case I would have to shorten the drive shaft out of the 3/4 ton if I used it. What variasions between the 2 trucks would be my best bet for a direct bolt in for the axle swap ? Thanks for any time and help. (I sure hate being a new guy)

    462ci GMC<P ID="edit"><FONT class="small">Edited by just me on 02/24/02 09:14 PM.</FONT></P>
     
  2. 55Willy

    55Willy 3/4 ton status

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    MMM I think this should of been in the test forum..whatcha wanting to know?



    <hr></blockquote>
    What do you mean, Where did I get it??...I <font color=blue>BUILT</font color=blue> the damn thing!!
     
  3. wayne

    wayne 3/4 ton status

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    1. Dana 44 and 10 bolt use a different brake line fitting but you can use your 10 bolt calipers on the 44.
    2. Since it is a 3/4 ton the axles will just bolt in.
    3. The e brake cables might need to be changed since your 84 pass. side cable should crossover the axle and the 73 should not.
    4. The output shaft on the trans I believe is different from a 205 and 208 t case so you will either have to swap the output shaft or use the whole trans and t case from the doner.
    5. If you swap the trans and case for the 205 you can use the same driveshafts if they are both SWB trucks.
    Hope this helps.

    See <a target="_blank" href=http://coloradok5.com/gallery/Waynes-Toy>Project Mighty Mouse</a> here.
    <font color=blue>Wayne<font color=blue>
    <font color=blue>Happy Trails<font color=blue>
     
  4. Silver84k5

    Silver84k5 1/2 ton status

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    you need to get the 1/2 ton-3/4ton conversion U joint for the rear drive shaft, (cant remember the part number) you prolly know this already

    If you dont make it the first time, Drink another beer, and press a little harder on the gas
     
  5. tori89k5

    tori89k5 1/2 ton status

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    NAPA part # for that conversion joint is 447

    1990 K5 4" lift, 33" MTR's, 14FF w/ Detroit locker, D44 w/ posi, 4.10's Raptor Tranny and Velvet Rides !
     

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