Question about 1979 Ford F 350

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Decoding rear axle tag

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

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  • Ford Master
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Go on web sit to dana transmissions/ differentials and see the technical division tab and go there for the identification of the diff.. The 603384-5 will be the code for the differential

Posted on Mar 29, 2014

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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

Posted on Sep 18, 2008

mick-40
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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

Posted on Nov 13, 2008

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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

Posted on Apr 25, 2009

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SOURCE: 88 ford bronco rear end

3.08 is the ratio, if you want to know for sure, its stamped on the ring gear.

Posted on Jun 15, 2009

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SOURCE: trying to push in axle

Did you remove center pin from the carrier?

Posted on Apr 21, 2011

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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
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This will tell you what you have my friend,good luck

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