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which rear end

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by BlueMeanie, Jan 2, 2003.

  1. BlueMeanie

    BlueMeanie Newbie

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    i just bought a 72 3/4 ton chevy truck. it has a rear end in it that i have never seen or heard of. it has a drop in 3rd member (like a 9inch) with a diff cover also. its a full floater also. does anyone have any info on this so i can find a locker and gears. thanks in advance /forums/images/graemlins/truck.gif
     
  2. Burt4x4

    Burt4x4 3/4 ton status

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    That is a Eaton rearend that GM used up to 72 in the 3/4ton. Duno about parts, my father-in-law has one in his 72 3/4T4x4
    Good Luck /forums/images/graemlins/thumb.gif
     
  3. Bill4rest

    Bill4rest 1/2 ton status

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    Yep it's an Eaton /forums/images/graemlins/thumb.gif I know for a fact you can get 4.57's and a drop in Detroit for them (full detroit but drops in like a lockright, using the stock carrier) . One bad a$s axle.
     
  4. 69K5

    69K5 1/2 ton status

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    do you have a pic? the 72 k20 i am getting had the same thing i think. i looked at the axel chart and the closest i could find to it resembling was the 9 inch ford.

    anyone know about disc brakes for the eaton??

    thanks

    nathan
     
  5. ben427

    ben427 1/2 ton status

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    ive heard that 14bff dic brake kits will work. Im gonna try out derbinators brackets and see if they fit on my eaton. Ill keep you posted.
     
  6. R72K5

    R72K5 Banned

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    thats the 10 bolt eaton chevy axle 47-72 useage, are the h052 5200lb and h072 7200lb axles for 3/4 and 1 ton trucks those years and parts for the diffs are pretty much not available anywhere, good luck
     
  7. 69K5

    69K5 1/2 ton status

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    cool thanks


    nathan
    69K5
     
  8. POFF

    POFF 1/2 ton status

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    I had to dump mine for a 14-bolt. I don't think they make lockers for Eatons anymore. The difference in price for the brakes alone paid for the new axle. If you get a 14 bolt try to get it out of a 1 ton, it'll bolt right up, you just have to move the shock mounts. Lockers are only $300 for a 14 bolt. If you decide to swap I can give you more advice, just ask.
     
  9. 69K5

    69K5 1/2 ton status

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    thanks!

    what did you mean for the breaks alone?? the eaton is just whats on the parts truck. i have a line on a 14ff i just have to go pick it up. just have to find 125.00

    nathan
    69K5
     
  10. R72K5

    R72K5 Banned

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    67-72 4x4 and longhorn and blazer have 40" perches and 1/2 ton and 3/4 ton 2wd have same 42.5" centers as 1/2 and 3/4 ton 4x2 and 4x4 73-up do

    longhorn is not the 8 foot long bed, its the 8.5 foot longbed

    good luck
     
  11. 69K5

    69K5 1/2 ton status

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    thanks for the info

    nathan
     
  12. POFF

    POFF 1/2 ton status

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    3 Years ago, before I figured out the Eaton rear-end was bad, I was looking into buying new brakes. I would have had to order the drums from back east and they were something like $160 each. All the hardware, adjusters, shoes and wheel cylinders were special order and about twice as expensive as the 14 bolt stuff. R72K5 is correct, if you get a 3/4 ton 14 bolt you will have to move the spring pads, they are 42 1/2" on center instead of 40". The 1 tons are 40" already. $125 is a good price, I payed $150 3 years ago at Pick-Your-Part.
     
  13. 69K5

    69K5 1/2 ton status

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    i'm gonna use thw eaton for now unless the parts to rebuild and put on disc outwiegh the 14ff and the disc then i will just get it and have a spare axel.

    nathan
     
  14. dins1

    dins1 Registered Member

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    You will have to find a used locker for the eaton They are not built anymore. I bought one for my 3/4 4x4 paid $250 for it. You can get all of the rebuild parts like bearings and gears from places like randy's ring and pinion. the rear disk swap parts work on the 14 bolt also. /forums/images/graemlins/burb.gif
     

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