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The Dana 27 uses a 7 1/5" ring and pinion that is only available in
3.54:1, 3.73:1, 4.27:1, 4.88:1, and 5.38:1 ratios in the CJs. It was
also available in a 4.10:1 ratio in ohter Jeeps. Many parts of the
Dana 27 interchange with the Dana 25. The Dana 27 normally came with
the superior Cardan-Cross u-joint type axle shafts, but carrier
bearing and ring and pinion are smaller than the Dana 25.
The CJ models that used the Dana 27 include the CJ-5, CJ-5A, CJ-6, and
CJ-6A. I have heard rumors that M38A1s were always built with the Dana
25, but I have not been able to confirm this.
| Model/Version |
Spring Pads |
Wheel to Wheel |
Years |
| Dana 27/CJ |
28" |
51" |
'66-'71 |
| Dana 27/M38A1 |
28" |
51" |
'66-'71 |
| Dana 27/Wagoneer |
NA |
NA |
'66-'73 |
| Dana 27/Jeepster/Commando |
NA |
NA |
'66-'71 |
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