1987 - 1996 F150 & Larger F-Series Trucks1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
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Did a search, but couldn't find the exact info need.
I have a friend that owns a 1993 F-150 5.0L 302 4x4 and is wanting to swap gears. Of course he's unsure what came in the truck stock. I've seen 2.73, 3.08 and I think 3.55 and 4.10, but not sure if these were all stock or if some were aftermarket.
Can anyone tell me where to locate the rear diff code at and the description of the code. I know for the 04-08 F150s they break out like this:
There were many possible stock gear ratios. The first 4 charcters on the bottom line of numbers on the metal tag hanging off one of the rear diff cover bolts is the gear ratio and diff type(open or LS), you'll probably have to remove the bolt to get all the numbers you need.
19-3.55 (seems like most f150's)
There are 21 possible axles but only the second digit is the ratio code. If it has a letter then it's limited slip, but the last digit will still match up with the ratios given here (B9 is limited slip 3.55). The exceptions are codes 72 and 73which are 4.63 and 5.13 respectively.
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