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Old Jun 5, 2006 | 05:49 PM
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Question gear question

i have a 93 f250 with a code of 29 - non-Positraction 3.55 ratio
i also have a 96 f250 with a code of 39 - non-Positraction 3.55 ratio

both trucks are 2wd. is there a difference in these two rear ends or did ford just want to throw a couple of numbers at the same thing? if there is a difference, is one better than the other? thanks for the help.
chris
 
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Old Jun 5, 2006 | 06:03 PM
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also, on the 96, it has a 351 and an automatic transmission, not the E4OD and i also don't think it has overdrive at all. the code in the door is G. any ideas as to which tranny this is?
chris
 
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Old Jun 5, 2006 | 06:42 PM
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G is a C4, but I know that's not right. Ford sometimes re-used codes. A code for something one year could mean something different the next. If it doesn't have OD, it's got to be a C6. You could special order it right up until 1997 in the F-250.

As for the axle, I believe the two different codes mean that one is a full floating rear axle and the other is a semi-floating rear axle. Does one truck have a big hub sticking out past the wheel, while the other truck sits flush with the wheel?

If not, then we can blame that on Ford's inconsistency, too.
 
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Old Jun 5, 2006 | 06:44 PM
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hahaha ill have to check...which is which? like if one has a hub sticking out, is that one semi-floating or constant floating?
chris
 
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Old Jun 5, 2006 | 06:45 PM
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for gas mileage and towing, i assume the E4OD is better? sorry for the many posts...i keep posting and immediately think of another question.
chris
 
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Old Jun 5, 2006 | 07:42 PM
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alrighty.
the 96 has a big hub sticking past the wheel.
the 93 has the hub sitting flush with the wheel.
does one of these have a semi-floating rear axel?
what is a semi-floating rear axel? what is the difference from a full floating rear axel?
chris
 
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