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Old 08-29-2012, 08:12 AM
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7.3l 4x4 or fx4

Im looking for a 7.3l but all i find is 4x4, now i know the fx4 is the off road pkg and when you buy a 4x4 you get a "one tire fire" how much would it be to put lockers in it to make all 4 wheel spin? or is that what manual locking hubs are for?
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Old 08-29-2012, 09:00 AM
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Just because it isn't an FX4 doesn't mean it won't have a limited slip. My 4X4 without the FX4 package has the limited slip, as do many others that I've seen.
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Old 08-29-2012, 09:32 AM
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You can put air lockers in that way you have the bed of both worlds open diff and a spool. No manual hubs does not change the differential action.
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Old 08-29-2012, 09:59 AM
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Sorry, I realize now that you were talking about the front axle... disregard my previous comment.
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Old 08-29-2012, 10:26 AM
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Quote:
Originally Posted by Devil Car View Post
Just because it isn't an FX4 doesn't mean it won't have a limited slip. My 4X4 without the FX4 package has the limited slip, as do many others that I've seen.
My 4x4 Off-Road package F-250 has a LSD in the back. My LSD was an option on the sticker along with the 4x4 Off-Road package. pretty sure the FX4 package didn't come out until '03. Up until '03, the trucks were either 4x4 or 4x4 Off-Road and I think the Off-Road package was Skid Plates and a Sticker.

You'll have a hard time finding a '03 7.3 FX4 as the 7.3 was offered in limited quantities in '03

Manual Locking Hubs have nothing to do with the locking action of the differential. It just means you have to get out and turn the knob to go 4wd instead of turning the knob and a vacuum line causes them to lock.
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Old 08-29-2012, 10:27 AM
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Quote:
Originally Posted by Devil Car View Post
Sorry, I realize now that you were talking about the front axle... disregard my previous comment.
and the front was never offered in LSD or locker from the factory in a Superduty AFAIK... all open diff.
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Old 08-29-2012, 10:28 AM
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FX4 = 4x4 offroad and the change was made in 02
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Old 08-29-2012, 10:38 AM
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Quote:
Originally Posted by ken6881 View Post
FX4 = 4x4 offroad and the change was made in 02
the FX4 came with fake Rancho shocks.
FX4 came out in '02 on '03 MY trucks
sources: Ford F-250 Super Duty
2003 Ford F-250 Super Duty Detailed Pricing and Specifications - MSN Autos
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Old 08-29-2012, 10:46 AM
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Thats interesting because my 02 window sticker says fx4
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Old 08-29-2012, 11:09 AM
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Quote:
Originally Posted by ken6881 View Post
Thats interesting because my 02 window sticker says fx4
They can put a sticker on anything. I have a late 99 and on the back of my truck it has an FX4 sticker on it.
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