Bill of Materials Numbers:
68-69 B body 3.54 Powr-Lok 602957-1, -2, -3, -4
4.10 Powr-Lok 602957-5, -6
69.5-72 B body 3.54 Powr-Lok 603109-1, -2
4.10 Powr-Lok 603109-3, -5
4.56 Powr-Lok 603109-6, -7, -8
70-72 B body 3.54 Trac-Lok 603222-1, -2
4.10 Trac-Lok 603222-3
4.56 Trac-Lok 603222-4
75-77 B body 5.13 Powr-Lok 603347-2
5.38 Powr-Lok 603347-1
69-71 E body 3.54 Powr-Lok 603080-1, -2, -4
4.10 Powr-Lok 603080-3, -5
4.56 Powr-Lok 603080-6, -7
70-72 E body 3.54 Trac-Lok 603226-1, -2
4.10 Trac-Lok 603226-4
74 E body 5.38 Powr-Lok 603425-1
77-78 Retail 4.10 Trac-Lok 603831-1
Axle Width Chart
Dana 60 rearend specs:
'66 B-body 54 1/4" housing, 59 3/8" axle flange to flange, 44" perch 23 spline power-lock sure-grip, 1330 U-bolt yoke
'67 B-body 54 1/4" housing, 59 3/8" axle flange to flange, 44" perch 23 spline power-lock sure-grip, 1330 strap yoke
'68-'69 B-body 54 15/16" housing, 60 1/16" axle flange to flange, 44" perch, 23 spline power-lock sure-grip, 7290 yoke
'70 B-body 54 15/16" housing, 60 1/16" axle flange to flange, 44" perch, 35 spline power-lock sure-grip, 7290 yoke
'71-'72 B-body 57 7/8" housing, 63" axle flange to flange, 47.3" perch, 35 spline track-lock sure-grip, 7290 yoke
'70 E-body 56 31/64" housing, 61 5/8" axle flange to flange, 46" perch, 35 spline power-lock sure-grip, 7290 yoke
'71 E-body 56 31/64" housing, 61 5/8" axle flange to flange, 46" perch, 35 spline track-lock
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Check page 20 to 21 ...... I went their school in the late 70's.... Now if I could just remember.....Check out this web good info...
http://www2.dana.com/pdf/X510-8DSD.pdf