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Old 01-31-2004, 05:44 PM
FordHerrera1978 FordHerrera1978 is offline
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Unhappy Full Floating Axle

I have a 1978 F-250 Custom,and I need to replace the rear, Full Floating Axle. In order to find another one to fit, I need to find the gear ratio. I looked on the tag on the differential, but I don't know what the numbers mean! Can anyone help me?
This is what the tag says: 3 54(1?) EDD7I(1?)A AEB
603901 2
Some of the numbers I wasn't sure of,as you can see above, because there were some rust spots. I wasn't sure if the first number four was a one, or If the "I" in the third section of numbers was a one.
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Old 01-31-2004, 11:05 PM
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Hi and welcome to the forum

3.54 is the ratio. If the 1 after the 3.54 is a L, then it could be limited slip.
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Old 01-31-2004, 11:29 PM
77'F-150Mudder 77'F-150Mudder is offline
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Quote:
Originally posted by LxMan1
Hi and welcome to the forum

3.54 is the ratio. If the 1 after the 3.54 is a L, then it could be limited slip.
Agreed, it should have 3.54 gears. But shouldn't the L be between the 3 and the 5 if it has limited slip??
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Old 01-31-2004, 11:51 PM
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usually, wasn't for sure on the big rearends
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Old 02-01-2004, 01:52 AM
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On the Dana's its 354L for limited slip.
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Old 02-01-2004, 01:52 AM
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