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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Rear End?????

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Old Jun 10, 2001 | 02:28 PM
  #1  
1965f250's Avatar
1965f250
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Rear End?????

My friend has a 1993 F-150 and we are trying to figure out what rear end he has. My 1965 has a tag on it that says 4.10...pretty easy. The tag on his has the following;

S844B
55883E07

Thanks ahead of time for helping to decipher this.

Cheers, Brian

 
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Old Jun 10, 2001 | 09:49 PM
  #2  
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Rear End?????

Do you know if it's the original rear end? If so, what's the door jam axle code. I might have more of a chance of figurin that out than those crazy series' of numbers they put on em.
 
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Old Jun 11, 2001 | 12:12 AM
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Rear End?????

If you go look at the tag again there is probably a 3 in the bottom left corner maybe under the bolt that holds the tag on which would make it a 3.55 ratio 8.8 inch differential.
 
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Old Jun 12, 2001 | 11:37 AM
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Rear End?????

Door jamb code is listed in the owners manual in the towing section with the associated ratio. Also it never fails to count driveshaft turns while pushing truck one rear tire revolution on flat concrete. I believe the axel tag will have an "L" between the whole number and the fraction for locking rear end and some other letter for an open rear end. Based on that looks like could be 3.07, but I my F150 has a 3.08.
 
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Old Nov 8, 2001 | 01:24 PM
  #5  
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Rear End?????

my 1993 F-150 has a 3.55 with a locking rearend. Any questions e-mail me at RedneckCadet@Netscape.net
-Jason-
 
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Old Nov 8, 2001 | 03:07 PM
  #6  
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Rear End?????

Check the "how can tell if m tuck has a limited slip? " thread... good stuff there, lots of ways to tell, even if you cant read the tag, or if the tag is missing.

Chuck
 
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Old Nov 8, 2001 | 05:46 PM
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Rear End?????

 
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