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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

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Old Jan 19, 2007 | 11:00 AM
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Red face Question

what rear ends came in f150 form 80-96 and how do i tell what gears i have
 
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Old Jan 19, 2007 | 11:46 AM
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Check the axle code on the door sticker or, check the tag attached to the differential. It is usually on one of the bolts for the cover or the pumkin.
 
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Old Jan 19, 2007 | 01:04 PM
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if you cant read the axle tag then read the door panel sticker
 
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Old Jan 19, 2007 | 04:10 PM
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i got that tag if i go to the junk yard to get a rear end do i just match all the numbers on my tag to junk yard rear end tag
 
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Old Jan 19, 2007 | 04:13 PM
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If you can give me the numbers off of that tag, I can de-code it for you.
 
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Old Jan 19, 2007 | 04:26 PM
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top numers are S838B
bottom numbers are 355 88 3802

i just need to get a rear end from a junk yard i just want to get the right one
with the same gears a such
 

Last edited by inline6 Red Neck; Jan 19, 2007 at 04:34 PM.
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Old Jan 19, 2007 | 04:36 PM
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You have an 8.8" axle with 3.55 gears on an open carrier. As long as you get an 8.8" axle from an F-150 or Bronco you'll be alright. Before 1983, all Broncos and F-150's came with a 9" axle, which looks different and isn't available in the same ratios. Close, but probably not what you want. After 86, they all had the 8.8".
 
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Old Jan 19, 2007 | 04:41 PM
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Top Number is S838B S=Sterling Plant, 838B=Plant Code
Bottom Number, 355= 3.55 Ratio, 88=8.8" ring gear diameter
3802 3=year, 8=month, 02= day of manufacture.

Hope this helps you.
Larry Mantta
 
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Old Jan 19, 2007 | 04:46 PM
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3.55 is the only gears the came in the 8.8
 
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Old Jan 19, 2007 | 04:50 PM
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No, not at all, there were the following ratios with the 8.8;
2.73, 3.08, 3.55, 4.10, 3.73.
 
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