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Late 1971 cj5 v-6 factory 4 speed restore.

Discussion in 'Early Jeep Restoration and Research' started by sawilly, Feb 9, 2014.

  1. Jan 13, 2015
    sawilly

    sawilly Member

    Salmon Arm BC
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    Jul 10, 2012
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    Took some pics of the trnny cover . The top is comparing it to a 3 speed cover .



    [​IMG].com/user/sawilly/media/imagejpg3.jpg.html][​IMG][/URL]
     
    Last edited: Jan 13, 2015
  2. Jan 14, 2015
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

    Medford Mass USA
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    Looks 100% factory to me ... except for the OD shifter.

    It has the correct-for-71 one-piece bell and the correct T18 plate adapter. Floor panels look original.

    The casting numbers on the transmission won't tell you the ratio. 13-01 is T-18.

    If there is no tag under one of the bolts on the transmission top, AFAIK your only way to determine the ratio is by counting the teeth of the transmission input gear. Wide ratio (6.32:1 1st) has 17 teeth, and close ratio (4.02:1 1st) has 23 (info per Nick in an earlier post).
     
  3. Jan 16, 2015
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

    Virginia Beach, VA
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    sawilly would you measure rear drive shift length , :D:D curious minds would like to know
     
  4. Jan 17, 2015
    sawilly

    sawilly Member

    Salmon Arm BC
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    Jul 10, 2012
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    [​IMG]

    [​IMG]

    Compressed 13.25 center to center of u joint cups
    Extended 14 3/4"
     
    Last edited: Jan 17, 2015
  5. Jan 17, 2015
    sawilly

    sawilly Member

    Salmon Arm BC
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    Jul 10, 2012
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    [​IMG]

    Here is the tranny input shaft .
     
  6. Jan 17, 2015
    sawilly

    sawilly Member

    Salmon Arm BC
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    Jul 10, 2012
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    Thanks Timgr this helps confirm the Jeep more . i haven't pulled the tranny cover yet but i am pretty sure it is the 4:1 1st . It is geared pretty hi compared to my other 6.3:1 geared t18 in my other jeep.
     
  7. Jan 20, 2015
    bcurtman

    bcurtman Member

    Rosebud, MO
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    Jan 8, 2014
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    That all appears to be correct. I say it is an original. I have owned over 50 jeeps, and every one of them 1975 and older have had the shift pattern decal on the dash.
     
  8. Mar 20, 2017
    BJHitson60

    BJHitson60 Member

    San Rafael, CA
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    Nov 20, 2009
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    I know that this is an old post but I may be working on a factory 4 speed project soon. First, thanks for starting this thread - some very good information.

    Question: Is the tub on a 1971 four speed the same as the tub on the four speed? It looks like the tub sheet metal may be cut back further for the 4 speed?
     
  9. Mar 20, 2017
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

    Medford Mass USA
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    Yes, the tub is cut back to clear the 4-speed. There are different floor plates for the T-98 or T-18. AFAIK there are no other mods to the tub.

    Look here - `70ish CJ5s? - this is an intermediate Jeep, so the transfer case shifter is different, but the main cover is the same. The floor is crudely cut back, then the new covers are held down with big hex-head sheet metal screws. Surprisingly ad hoc, considering how long the CJ has been offered with a T-98 or T-18.

    It's ok, even preferred, to start a new thread and refer back to the old one. Just FYI.
     
  10. Mar 20, 2017
    BJHitson60

    BJHitson60 Member

    San Rafael, CA
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    Tim - Thanks for the additional information and for including the link to the other thread. Very interesting! I did not see that other thread. Also thought the information on the original cost of the T-18 relative to the cost of the Jeep was informative.

    The floor plates for the T-14 three speed (1970ish) had a little factory cut out for adding an overdrive. I wonder if that cut out (in the top cover for the factory T-18) in the top photo on this page was for an overdrive shifter. Wonder if anyone has a factory 4 speed set up with an overdrive. Pictures would be appreciated. :rolleyes:
     
  11. Mar 20, 2017
    Daryl

    Daryl Sponsor Sponsor

    Bonney Lake, WA
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    An overdrive was a dealer installed item. Nothing on the floor pan was ever altered from the factory. If there is a cutout for an OD shifter then somewhere in the Jeep's life it had an overdrive installed.
     
  12. Jan 14, 2018
    BJHitson60

    BJHitson60 Member

    San Rafael, CA
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    One more question - RockAuto does not list a separate clutch for T-18 vs the T-14 for 1971. Does anyone know if the clutch is identical? Perhaps just the throw out bearing is different? Thx.
     
  13. Mar 10, 2019
    BJHitson60

    BJHitson60 Member

    San Rafael, CA
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    Nov 20, 2009
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    Do you happen to have a picture of how the overdrive shifter comes up through the floor pan? It looks like your top cover has a notch cut in it on the right side is that for the od shiter? Do you know if that OD shifter is Warn or other? Thanks...
     

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