Ford f350 front differential and drive shaft gear ratio - Ford Powerstroke Diesel Forum
 
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post #1 of 2 Old 06-17-2014, 11:37 AM Thread Starter
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Ford f350 front differential and drive shaft gear ratio

Have a ford f350 7.3L diesel 2001 with front end problem. Any advise on how to find out if I can take front axle and differential out of a 2001 f350 7.3l diesel and put it in my 2002 same vehicle. Having trouble confirming gear ratio for front in vehicles to make sure it would be compatible. Not an expert with this so any advise most appreciated!
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post #2 of 2 Old 06-17-2014, 11:53 AM
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The sure fire way is to turn the drive shaft/input yoke on the axle and see how much the axles turn in relation.
3 3/4 and you have a 3.73:1, a bit more than 4 and you have a 4.1, etc... you'll find 3.55 (maybe?), 3.73, 4.10, 4.30, 4.56 and 4.88s out there.. maybe others.

there should be a tag on the axle with a code for the gear ratio, as long as it's never been regeared.
same for this door jam sticker axle code list, as long as it hasn't been regeared/ AFAIK, all fronts are open diff regardless of the code saying Limited-Slip or not (only the rears are LS)

Door jamb sticker axle code
31 3.73 non-limited slip, F-250/Excursion
C1 3.73 limited slip, F-250/Excursion
32 4.10 non-limited slip, F-250
C2 4.10 limited slip, F-250/Excursion
33 4.30 non-limited slip, F-250
C3 4.30 limited slip, F-250/Excursion
36 4.56 non-limited slip, F-250
C6 4.56 limited slip, F-250
41 3.73 non-limited slip, F-350 (single rear wheels)
D1 3.73 limited slip, F-350 (single rear wheels)
42 4.10 non-limited slip, F-350 (single rear wheels)
D2 4.10 limited slip, F-350 (single rear wheels)
43 4.30 non-limited slip, F-350 (single rear wheels)
D3 4.30 limited slip, F-350 (single rear wheels)
46 4.56 non-limited slip, F-350 (single rear wheels)
D6 4.56 limited slip, F-350 (single rear wheels)
61 3.73 non-limited slip, F-350 (dual rear wheels)
F1 3.73 limited slip, F-350 (dual rear wheels)
62 4.10 non-limited slip, F-350 (dual rear wheels)
F2 4.10 limited slip, F-350 (dual rear wheels)
63 4.30 non-limited slip, F-350 (dual rear wheels)
F3 4.30 limited slip, F-350 (dual rear wheels)
66 4.56 non-limited slip, F-350 (dual rear wheels)
F6 4.56 limited slip, F-350 (dual rear wheels)
81 3.73 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E1 3.73 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
82 4.10 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E2 4.10 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
83 4.30 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E3 4.30 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
86 4.56 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E6 4.56 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
88 4.88 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
EW 4.88 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
G3 4.30 limited slip, F-450 Chassis Cab
73 4.30 non-limited slip, F-450 Chassis Cab
78 4.88 non-limited slip, F-450 Chassis Cab
G8 4.88 limited slip, F-450 Chassis Cab
75 5.38 non-limited slip, F-450 Chassis Cab
G5 5.38 limited slip, F-450 Chassis Cab
GW 4.10 limited slip, F-450 Chassis Cab
98 4.88 non-limited slip, F-550 Chassis Cab
K8 4.88 limited slip, F-550 Chassis Cab
95 5.38 non-limited slip, F-550 Chassis Cab
K5 5.38 limited slip, F-550 Chassis Cab
KW 4.10 limited slip, F-550 Chassis Cab


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2001 Ford F-250 SD CCSB 7.3 PSD - AIS Intake, Zoodad,
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