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Axles for running 46's?

Discussion in 'CJ' started by T-TRAIN, Jul 6, 2020.

  1. Jul 6, 2020 at 6:49 PM
    #1
    T-TRAIN

    #1
    T-TRAIN [OP] New Member

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    THOMAS
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    LIFT
    I am getting ready to start my build and am getting mixed reviews, I have a 1985 CJ7 and want to run 46 Mickey Thompson Baja Claws. I am building this jeep to just cruise around 45 mph around 25 miles from ocean springs to Bay st louis, MS. I have stock axles and I know they will have to be beefed up or changed but what is your recommendation for axles? I also have the straight 6 and currently running 35's just fine. I am just searching for information and opinions.
     
    T-TRAIN, Jul 6, 2020
    #1
  2. Jul 6, 2020 at 9:34 PM
    #2
    Jim Beam

    #2
    Jim Beam Well-Known Member

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    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    Technically the Jeep CJ is not designed for anything over the size of tire that it came with. I am sure you have noticed a reduced braking capability, reduced power, inaccurate speedometer, automatic transmission overheating or excessive wear on a manual transmission clutch, and tire clearance issues. All of these issues can be solved correctly with enough money spent that you will never get back.
     
    Jim Beam, Jul 6, 2020
    #2
    aggrex likes this.
  3. Jul 7, 2020 at 1:57 PM
    #3
    Prerunner1982

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    Prerunner1982 Well-Known Member

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    Beefed up 1 tons and a V8, or Rockwell 2.5 tons with 6.72 gear ratio for the I-6.
     
    Prerunner1982, Jul 7, 2020
    #3
    LYFZGOOD and aggrex like this.
  4. Jul 7, 2020 at 3:31 PM
    #4
    aggrex

    #4
    aggrex Well-Known Member

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    DE
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    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Those parts will place you in the ultimate rock crawler club :jeep2:
     
    aggrex, Jul 7, 2020
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    LYFZGOOD likes this.
  5. Jul 7, 2020 at 5:37 PM
    #5
    Jim Beam

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    Jim Beam Well-Known Member

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    My CJ has a 103 to 1 first gear ratio and I go real easy on the pedal when in that gear. I had an aircraft stress engineer calculate what diameter axles I would need to handle that kind of torque. It was calculated to require a 2" diameter.
     
    Jim Beam, Jul 7, 2020
    #5
  6. Jul 21, 2020 at 5:08 AM
    #6
    Eyy-sp12

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    Eyy-sp12 Active Member

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    1977 CJ5 with 304 and T-176
    T-176 Transmission with Dana 300
    I bought a rear differential how can I tell fotcsurexif it is a Dana 44 ? It has some tags on it . However I dont see anything saying D44? Appreciate any help.
     
    Eyy-sp12, Jul 21, 2020
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  7. Jul 21, 2020 at 7:57 AM
    #7
    Prerunner1982

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    Prerunner1982 Well-Known Member

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    post a picture of the differential cover.
     
    Prerunner1982, Jul 21, 2020
    #7
  8. Jul 21, 2020 at 7:31 PM
    #8
    Jim Beam

    #8
    Jim Beam Well-Known Member

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    A Dana 44 has a 12 bolt rear cover.
     
    Jim Beam, Jul 21, 2020
    #8
  9. Jul 22, 2020 at 6:18 AM
    #9
    Eyy-sp12

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    Eyy-sp12 Active Member

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    All no matter what have 12 bolts in cover . I thought it would have D44 wrote on it . Anyway thanks
     
    Eyy-sp12, Jul 22, 2020
    #9
  10. Jul 22, 2020 at 12:25 PM
    #10
    Jim Beam

    #10
    Jim Beam Well-Known Member

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    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    You can also check the rear cover shape online to confirm.
     
    Jim Beam, Jul 22, 2020
    #10
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