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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 08-01-2008, 01:41 PM
V8EXPLR V8EXPLR is offline
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Stock Gear Ratios - 93 F150

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:

19 — 3.55 non-limited slip
17 — 3.31 non-limited slip
H9 — 3.55 limited slip
B6 — 3.73 limited slip

Thanks!
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2006 Ford F-150 SuperCrew XLT Chrome Edition
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Old 08-01-2008, 02:10 PM
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Conanski Conanski is offline
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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.
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
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Old 08-01-2008, 02:14 PM
V8EXPLR V8EXPLR is offline
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Many thanks! We'll check into this to see what we can find.

Any idea on how these 4 characters may display? Is it something like this:

273O = 2:73 Open
273L = 2:73 LS
308O = 3:08 Open
308L = 3:08 LS

Just trying to get an understanding of what to look for.
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Justin
2006 Ford F-150 SuperCrew XLT Chrome Edition
5.4L Flex-Fuel, 3.73LS, 18" Stock Rims, 18" BFG Rugged Trail T/A's, Trailer Tow Pkg
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Old 08-01-2008, 02:39 PM
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21 rear axles are 18 too many

Axle code is on the drivers door post

12-2.73
17-3.31
18-3.08
19-3.55 (seems like most f150's)
25-4.10
68-4.88


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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Old 08-01-2008, 02:40 PM
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Typically you'll see 3L55 or 3 55 with a blank space where the L would be. The L of course signifies a limited slip, no letter there means open.

The codes from the door pillar should work as well... Ford Axle Code Chart .: Articles
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
1996 Kawasaki ZX11D, 2004 Honda 599, 2008 Kawasaki KLR650
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Old 08-01-2008, 02:43 PM
V8EXPLR V8EXPLR is offline
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Conanski & cowades:

Thanks! This is why I love this site so much. So many people with the knowledge or at least know where to locate the info at.

We appreciate it. Hopefully we'll post back on Monday with our findings and whether he wants to swap or not.
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2006 Ford F-150 SuperCrew XLT Chrome Edition
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Sun/Moonroof, Fog Lamps, Ford Bedliner
Lund Headlight & Taillight Covers, Lund VentVisors
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Old 08-01-2008, 02:43 PM
 
 
 
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