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Military Axels - M1008

Discussion in 'The Garage' started by cuervo, May 21, 2004.

  1. cuervo

    cuervo Wears Boob Goggles! Premium Member

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    Hello all,

    Is there anyone with info on these axels? The M1008 is a full size GMC/Chevy with 6.2 motor, I believe. Other then that, I really don't know much about these trucks.

    They appear to be Dana 60 axels, are they? If so, are they good upgrades for a stock CK5/Jimmy?

    Thanks
     
  2. prerunner1982

    prerunner1982 1/2 ton status

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    the military trucks are 1 1/4 ton rated and the blazers are 3/4 ton rated. any drivetrain component would be a good upgrade for a 1/2ton truck/blazer.
     
  3. wayne

    wayne 3/4 ton status

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    M1008= 6.2/th400/208 with a D60 front and 14ff rear. Now most had a Detroit in the rear. All had 4:56 gears. Some had Trac Lok's in the front. Very few had 205 t cases in them.

    The K5's had 6.2/th400/208 with 10 bolt axles, 3:08 gears and a Gov Lock in the rear.
     
  4. cuervo

    cuervo Wears Boob Goggles! Premium Member

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    Are widths of the M1008 the same as a Jimmy/Blazer? Will the sping pads need to be moved?
     
  5. cuervo

    cuervo Wears Boob Goggles! Premium Member

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    Come on guys, help a "newbie" out with his first major upgrade quest.
     
  6. fourwheelerjeff

    fourwheelerjeff 1/2 ton status Staff Member Moderator

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    [ QUOTE ]
    Are widths of the M1008 the same as a Jimmy/Blazer? Will the sping pads need to be moved?

    [/ QUOTE ]

    rear pads will need to be moved /forums/images/graemlins/thumb.gif
     
  7. wayne

    wayne 3/4 ton status

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    [ QUOTE ]
    Are widths of the M1008 the same as a Jimmy/Blazer? Will the sping pads need to be moved?

    [/ QUOTE ]

    Front is a bolt in, rear pads will need moved and you will need a conversion u joint. Depending on the year of your K5 depends on if the e brakes are a bolt in.
     
  8. cuervo

    cuervo Wears Boob Goggles! Premium Member

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    Thanks guys!

    I have an 87 Jimmy that will get these axels so I guess it should be pretty straight-forward with install. I guess if I need to put on new rear pads I'll be able to set the degree with them instead of shims.
     
  9. wayne

    wayne 3/4 ton status

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    [ QUOTE ]
    Thanks guys!

    I have an 87 Jimmy that will get these axels so I guess it should be pretty straight-forward with install. I guess if I need to put on new rear pads I'll be able to set the degree with them instead of shims.

    [/ QUOTE ]

    The rear e brake cables will work on your 87. Conversion ujoint is Napa part #447, and yes you can set pinion angle with the spring pads. Here is what I would do. Put the axle in with the pads not welded to the axle. Once it is under and bolted up you can use a jack to set the pinion angle. Once it is set tack them on good but do not weld them solid. Take it for a spin but be light on the gas when starting out. If it does not vibrate then you can weld it up the rest of the way. I made the mistake of welding them solid on the first swap I did. I had the angle set and took it out and it vibrated like mad from about 45 to 60 mph. Wound up pointing the pinion straight at the t case. It looked like I should have had a rear CV shaft but I didn't.
     

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