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What rear end do I have in 98 expedition xlt
I am going to be doing some work on my rear end, I went under it to see if I could get any info to help my identify the rear end with no luck. I then looked at a parts mag. that shows most of the rear ends from Ford and others and my bolt pattern does not match up to what I though i had (8.8). I could not find the bolt pattern that I have, so is there anyone out there that can help.
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maybe try looking up your axle code located on the driver door :confused:
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...or on the tag under one of the axle cover bolts...
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What rear end ratio is in my Ford , do I have positraction? - Drivetrain.com
Here is the decoder ring once you find the code |
Originally Posted by alwaysfords41
(Post 11147939)
What rear end ratio is in my Ford , do I have positraction? - Drivetrain.com
Here is the decoder ring once you find the code My bolt pattern matches up the the 9 but that actual rear end was not used unless i read some wrong info. |
9" rear axle = 1957/79 misc. FoMoCo Passenger Cars / 1957/82 F100, some 1983 F100 / 1966/82 Bronco, some 1983/86 Bronco / 1969/87 E100/150 / 1975/82 F150, some 1983/86 F150.
8.8" rear axle introduced in 1983. Some F100/150's & Bronco's could also have the 8.8 as it depended on the application. 1997/2001 Expedition could have either the 8.8" or 9.7" rear axle with or without Limited Slip. Post the AXLE code printed on the Certification Label. Posi, Positraction are GM terms. |
The posi term came attached to the link I posted, which is the result of someone else's search. Here is a decoder for the axle codes;
1998 Ford Expedition Used Rear Axle Assembly (Genuine OEM Quality) It looks like the 3.55 is a 8.8 |
Originally Posted by NumberDummy
(Post 11149576)
9" rear axle = 1957/79 misc. FoMoCo Passenger Cars / 1957/82 F100, some 1983 F100 / 1966/82 Bronco, some 1983/86 Bronco / 1969/87 E100/150 / 1975/82 F150, some 1983/86 F150.
8.8" rear axle introduced in 1983. Some F100/150's & Bronco's could also have the 8.8 as it depended on the application. 1997/2001 Expedition could have either the 8.8" or 9.7" rear axle with or without Limited Slip. Post the AXLE code printed on the Certification Label. Posi, Positraction are GM terms. |
Originally Posted by alwaysfords41
(Post 11149773)
The posi term came attached to the link I posted, which is the result of someone else's search. Here is a decoder for the axle codes;
1998 Ford Expedition Used Rear Axle Assembly (Genuine OEM Quality) It looks like the 3.55 is a 8.8 Only ratio listed for the 9.7 = 3.31-1. I go by Ford truck parts catalogs to decode this jazz. The aftermarket sector decoders could have errors and omissions. |
Originally Posted by alwaysfords41
(Post 11149773)
The posi term came attached to the link I posted, which is the result of someone else's search. Here is a decoder for the axle codes;
1998 Ford Expedition Used Rear Axle Assembly (Genuine OEM Quality) It looks like the 3.55 is a 8.8 |
ok, thanks for the replies and help. Its nice to know what rear end i have, how is the 3.55 anyways, I mean where does it stand among other common ratios. I hear alot about a 4.10, 3.73 and a few others.
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now knowing that my rear end is an 8.8 with a 3.55 ratio, what is the front axle assembly. I know being a 4x4, the ratio is the same, just curious on the name of this axle assembly as well.
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Ummmm, 3.55 front axle. There are no size variants in the front.
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Originally Posted by alwaysfords41
(Post 11151118)
Ummmm, 3.55 front axle. There are no size variants in the front.
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Not really sure what you mean. There is no name for it other than 3.55 front axle. Name it whatever you like.
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