97-03 F150 Rear Axle

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01-F150

Junior Member
Mar 4, 2018
3
0
1
#1
How's it going? I am having trouble trying to find out which rear end i have in my truck.
It's a 2001 F150 with the 5.4 engine, disk brakes.
I have seen a few sites that tell me i have the 8.8, an others that tell me i have the 10.25(which seems abnormally huge for a 1/2 ton) The one other information i was able to gain is that i have the 12 bolt, and not the 10 bolt.
Any help would be appreciated! I am trying to have some axles made from currie (converting to 5x5.5) without having to buy a new rear end.
 

01-F150

Junior Member
Mar 4, 2018
3
0
1
#3
Thanks! I did see that too... that gives me 3 choices as well haha 10.25, 10.5, and 9.75 FML
I just didnt want to do a whole tear down just to get measurements but i guess I will have to.
 

84projectford

Senior Member
Sep 8, 2010
649
120
43
Phoenix Az
#4
Thanks! I did see that too... that gives me 3 choices as well haha 10.25, 10.5, and 9.75 FML
I just didnt want to do a whole tear down just to get measurements but i guess I will have to.
10.25 and 10.5 never came in the f150. your choice for that year is either the 8.8 or the 9.75. take a pic of the diff cover and post here. its very easy to distinguish between the two.
 

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