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muncie 21 dana 20 or turbo 350 dana 300

Discussion in 'Early CJ5 and CJ6 Tech' started by capechopper, Feb 8, 2006.

  1. Feb 8, 2006
    capechopper

    capechopper New Member

    plymouth MA
    Joined:
    Feb 6, 2006
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    10
    lets hear opinions..378 gears 350 smallblock / 300 is a twin stick muncie has slave but sucks..
     
    capechopper, Feb 8, 2006
    #1
  2. Feb 8, 2006
    181jeep

    181jeep Banned

    central valley, ca
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    Feb 3, 2004
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    376
    What exactly are you asking??

    JB
     
    181jeep, Feb 8, 2006
    #2
  3. Feb 8, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    9,221
    TH350 will be better suited to off-roading than a M21 transmission.

    Or you could sell the M21 to a musclecar enthusiast and buy an SM420/465.

    My vote is TH350/D300. Better crawl ratio by far and away.
     
    sparky, Feb 8, 2006
    #3
  4. Feb 8, 2006
    capechopper

    capechopper New Member

    plymouth MA
    Joined:
    Feb 6, 2006
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    I was asking witch combo to run..just bought a 63 cj5 ..has 4 speed and a sy slave..have a chance to snag a th350 and dan300 for 300 bills with the adapter..
     
    capechopper, Feb 8, 2006
    #4
  5. Feb 8, 2006
    52-willy

    52-willy New Member

    claremont nh
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    Jan 25, 2006
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    i agree with sparky sell the munce cause i think m21 is a close ratio and it has a high first gear but if you are talking munce sm420/465 then ide stick with that combo unless you want the auto
     
    52-willy, Feb 8, 2006
    #5
  6. Feb 8, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    I should clarify, between a M21/D20 and a TH350/D300 the second will have a far better crawl ratio than the first.

    The SM420/or SM465 would have a good crawl ratio.
     
    sparky, Feb 8, 2006
    #6
  7. Feb 9, 2006
    jeepdaddy2000

    jeepdaddy2000 Active Member

    Eagle Point oregon
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    Jun 24, 2004
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    1,180
    As always, the question is "what kind of wheeling are you doing with the Jeep?" This will drive your decision.
     
    jeepdaddy2000, Feb 9, 2006
    #7
  8. Feb 11, 2006
    chevyjeep

    chevyjeep Member

    Elkgrove, Ca
    Joined:
    Dec 17, 2005
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    80
    M 21 works great if you are into sand dragging.
    But I love my hydraulic clutch. Their is no linkage to bind up.
     
    chevyjeep, Feb 11, 2006
    #8
  9. Feb 12, 2006
    Southtowns27

    Southtowns27 Custom Title

    The Backhills of...
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    Feb 4, 2003
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    Won't a TH350/D300 be too long for an ECJ5??? I have an SM465/D18 and my rear driveshaft is 13" long. I have a Chevy V8 so that moved everything back, but it seems to me that the automagic would be really long...
     
    Southtowns27, Feb 12, 2006
    #9
  10. Feb 12, 2006
    capechopper

    capechopper New Member

    plymouth MA
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    Feb 6, 2006
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    I let ya know..took the muncie out today..might move the rear axles back..not shure yet anyone done it or have a link to it
     
    capechopper, Feb 12, 2006
    #10
  11. Feb 12, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    TH350s have been put in 5's for quite some time now by different folks, usually with a D18 though. Is it the D300 that makes it too short?
     
    sparky, Feb 12, 2006
    #11
  12. Feb 12, 2006
    capechopper

    capechopper New Member

    plymouth MA
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    Ill let ya know on this end asap....Doug
     
    capechopper, Feb 12, 2006
    #12
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