Dana ring gear date code

[Cuda Cody]

This was from @Chryco Psycho ...

Mopar Dana 60 Tube Stamp Bill of Materials decoded:

Specifications and Applications
All Dana 60 housings are marked with a "Bill of Materials" number and a date code. BoM numbers are found on the back of the right axle tube, 2-3 inches outboard of the center section. All Dana 60 differentials are also marked with a date code. The 'font' for these stampings is a sans serif style and the characters are about 1/8" high. Particularly for the axle tubes, the stampings are faint, so it is important to clean the area well and to visualize them in good light. The BoM number is a 6-digit number with a one or two digit suffix separated by a dash: XXXXXX- X. Date codes are found on both housing and differential and are formatted MM DD Y. Date codes are found inboard of the BoM number on the housing, and on the side of the cylindrical part of the differential. The year code on housings is always one digit and on differentials can be two digits. Housing date codes are followed by a letter (A, B, or C) which may indicate the work shift or factory line. Some differential stampings also show this letter suffix. Zeros are not used in month and day codes. Wide variation in spacing of the components of the date code is seen, and it is not unheard of to see two date codes stamped into a housing, one above the other. These two date codes are usually within a few weeks of one another.


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
              Maint.

67-70       D200/W200     Std                                 602423     
68.5-70    D200/W200     Std, Powr-Lok                   602010
69.5-72    D200/W200     Std, Powr-Lok, Trac-Lok     603016
71.5-75    D200/W200     Std, Trac-Lok                   603236
76           D200/W200     Std, Trac-Lok                   603769
77           D200/W200     Std, Trac-Lok                   603775
78           D200/W200     Std, Trac-Lok                   603892
71-75      D200/W200HD  Std, Trac-Lok                   603237
76-78      D200/W200HD  Std, Trac-Lok                   603647
70-71      B300/M300      Std, Powr-Lok, Trac-Lok     603160
71.5-74    B300/M300      Std, Trac-Lok                   603313
74.5-75    B300/M300      Std, Trac-Lok                   603516
76           B300/M300      Std, Trac-Lok                   603645
76.5        B300/M300      Std, Trac-Lok                   603768
77-78      B300/M300      Std, Trac-Lok                   603774
78           B300 Maxi       Std                                 603832

Axle shaft dimensions vary in Dana 60 axles. Dimensions of semi- floating (passenger car type) axles shafts are shown below. Shaft lengths are measured from the outer flange face to the inboard end of the shaft. Note that the right axle shaft is always shorter than the left, so unlike the Chrysler 8 3/4" axle, Dana 60 axle shafts will not interchange side-to-side.

BoM        Dia.-splines           L shaft     R shaft
602957     1-1/2"-23              29-21/32"   28-9/32"   
603109     1-1/2"-35              29-21/32"   28-9/32"
603222     1-1/2"-35              31-5/64"    29-11/16"
603347     1-1/2"-35              28-7/16"    27-1/16"
603080     1-1/2"-35              30-7/16"    29-1/16"
603226     1-1/2"-35              30-7/16"    29-1/16"
603425     1-1/2"-35              24-7/16"    23-1/16"
603831     1-5/16"-30             32-5/8"     32-5/8"

Dana 60 Gear sets
Standard Series
P4529919   4.10:1
P4529920   4.56:1
P4529921   4.88:1
P4529922   5.13:1
P4529923   4.38:1
P4529924   5.57:1
P4529925   5.86:1
P4529926   6.17:1

Pro Series 9310 High Strength Material
P4529927   4.10:1
P4529928   5.13:1
P4529929   5.38:1
P4529930   5.57:1
P4529931   5.86:1
P4529932   6.17:1
P4529933   6.50:1


Part Numbers

382S          Differential bearing cup
387A          Differential bearing cone
HM88510    Drive pinion outer bearing cup
HM88542    Drive pinion outer bearing cone
HM803110   Drive pinion inner bearing cup
HM803146   Drive pinion inner bearing cone
18888        Drive pinion seal
18891        Drive pinion seal (Differs in configuration of lip)
P4529485   Powr-Lok Diff. Clutch kit (Flat Plates with composite)
2852523     Powr-Lok Diff. Clutch kit (plain steel Flat Plates)
P3571032   Differential Bearing Adjustment Shim Package
P3571030   Drive Pinion Front Bearing Shim Package
P3571031   Drive Pinion Rear Bearing Shim Package
P5249453   Shim Kit (Includes 030, 031, and 032 Packages)
P4529488   Ring Gear Bolt Package
RDS6095    Cover gasket (Felpro)
A7            Axle bearing
A7LK         Axle seal and retainer kit, left side
A7RK         Axle seal and retainer kit, right side (discontinued as of March, 2001)


Here's what the Dana 60 E-Body stamps look like:

[6bblgt]

5 25 8 = 5/25/68 there should be a second date stamped on the tube

602957 2 = '68-'69 b-body w/3.54s

ring gear: stamped # 34508 R 41-11 (3.73:1) & 29 spline pinion stamped # 34507
Dodge 3821554 ('71-'75 B300 series only)
Ford C7TZ4209E
GMC 3965148
IHC 350520C91
JEEP 8124782

Ring gear # 34508 Pinion # 35095
GMC 653194