I'm trying to find what rear end I have. the truck is actually a 74 .i'm not sure that the rear end is original to the truck . I think it is a dana 60 or 70 . the tag on the rear end has the following info. d3ta-al followed by 603384-5.the outer housing is aout13.5-14 in. in height and has 10 bolts the axle has 23 splines it also has 4.10 gear ratio.can any one tell what year ,make and size rear end this is. (note) the t in d3ta may not be a t. It looks like one but the upper part of it is curved
SOURCE: Leak in rear axle
you will need to unbolt the axle and slide it out there should be 6 or 8 bolts on the hub that sticks out of the center of wheel. take this out and there is a spanner nut inside you will need to bend back locking tab and unscreww nut and drum and hub will slide off you will see seal inside hub
SOURCE: Bird Rear-end Size
Hi meduck4,heres what you need brother as I cant see your diff, 3 ways to tell what you have:
#1 The first is the driver's door tag; there will be a
one-letter or one-numeral axle code listed there. You can then compare
it to the chart below:
CODE
Rear Axle Ratio
Conventional
Locking
8
M
2.73
Y
Z
3.08
F
R
3.45
5
E
3.27
6
W
3.73
#2 The second is the axle tag, attached to the lower lefthand bolt on the
rear axle itself. The bottom left line will give you the gear ratio,
and the type of rear end (S for limited slip non-locking, and L for
locking).
#3 The 7.5" rear axle height is shorter than the width and the shape appears "oval".
The 8.8" rear axle dimensions are equal and the shape appears "round".
This will tell you what you have my friend,good luck
SOURCE: 1996 F150 Gear ratio ID tag 5832 H or M 3188 6b05
Most auto parts stores can tell you from the tag which rear end you are using and the ratio
SOURCE: 88 ford bronco rear end
3.08 is the ratio, if you want to know for sure, its stamped on the ring gear.
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