Fx4 vs 4x4
Senior User
Joined: Oct 2010
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From: Henderson, KY
Usually it's leather, full center console, different gauge graphics, chrome-less exterior trim and Rancho shocks, skid plates and L.S. Diff. Usually 18" wheels are standard. Drivetrain is the same as any F150 with the 3.73 L.S., and I doubt the shocks are really anything special. The skid plates would be nice, though. Think of it as an off-road oriented Lariat package.
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New User
Joined: Feb 2011
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Please don't confuse me on the limited slip or locking diff's on the F150's. I know u can lock the rear diff on the 09+ FX4's but do the 04+ have a e locker like the Chevy's w/ the Eaton G80 locking diff. So are the diffs the same on a F150 4x4 and Fx4's????
Senior User
Joined: Apr 2003
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From: Jerseyville,IL
Mine is the same as yours except it's a supercab. Also My '02 FX4 had 3.55's, but my '04 FX4 has 3.73's
Senior User
Joined: Oct 2010
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From: Henderson, KY
Is your 04 missing the full center console, leather interior, and FX4 instrument cluster?
My truck seems to have the differential locked in. If I floor it from a dead stop it will light the tires leaving two identical spin marks from both rear tires. My ranger had a limited slip rear-axle. One would spin, for a second or two before the other one kicked in.
My truck seems to have the differential locked in. If I floor it from a dead stop it will light the tires leaving two identical spin marks from both rear tires. My ranger had a limited slip rear-axle. One would spin, for a second or two before the other one kicked in.
Hotshot
Joined: Sep 2010
Posts: 10,459
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From: RVA
The pressure on limited slip clutch packs differs greatly. Your 04 doesn't have a locker from the factory. It would have been added aftermarket.
The LS in my '06 FX4 is also pretty aggressive as I assume that the pressure on the clutch pack plates is high. My truck will also break both tires loose if I want, but again, I don't have a locker.
If your rear diff was locked, then your truck would be a bear to turn (truely locked axles always want to go straight -- think professional drag cars, fully locked there), additionally the inside wheel on the turn would chirp every time you made a turn, fast or slow, light or heavy throttle input.
The LS in my '06 FX4 is also pretty aggressive as I assume that the pressure on the clutch pack plates is high. My truck will also break both tires loose if I want, but again, I don't have a locker.
If your rear diff was locked, then your truck would be a bear to turn (truely locked axles always want to go straight -- think professional drag cars, fully locked there), additionally the inside wheel on the turn would chirp every time you made a turn, fast or slow, light or heavy throttle input.
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Joined: Nov 2010
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Is there any difference in the Fx4 package other than skid plates and shocks? I think 09 Fx4 adds a electronic rear locker but I dont think the 04's to 08's have the locker. I'm looking to buy a F150 4x4 for under $18 and not sure if their is a big difference in the Fx4. Thanks for any input.
F-150 Cat, I have a red supercab 2004 FX4 with leather, tow package, 35,000 miles, bedliner, bull bar, hood shield, 3.73 axle, 18 inch aluminum wheels and with only 35,000 miles in case you are looking. I'm in Nashville,TN
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Senior User
Joined: Nov 2004
Posts: 377
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From: Vacaville,CA
I have an 04 Fx4 with 3.55LS. It now has 127k on the clock and the packs are useless. Looking to do a rebuild kit and add an electronic locker. I may put an air locker so I can have the excuse to put ON BOARD AIR. My suggestion is to buy what is in your financial means. You should try to get a dealer to print out what it came with from the factory. Some of them have heavy duty parts not advertised.
I have the window sticker..mine is a TRUE FX4. All FX4s are build to the market that orders them.
I have....sport cloth,column shifter,s/d plates,3.55gears,18''wheels,ESOF4x4,60/40 rear bench, single seat/center seat.
I have the window sticker..mine is a TRUE FX4. All FX4s are build to the market that orders them.
I have....sport cloth,column shifter,s/d plates,3.55gears,18''wheels,ESOF4x4,60/40 rear bench, single seat/center seat.
Posting Guru
Joined: Mar 2010
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From: northern va
im wondering if the 3.55ls fx4 option was maybe 04 only??? everyone who said they have the fx4 and 3.55's are in 04 years.
BatteriesNotINCL you say the packs are useless, how lond did they last and do do lots of burnouts to kill them?? im looking at buying a posi (even one removed from an fx4) but i dont want to pay the $300 to install it if its almost worn out or will wear fast because i have 35's and love to do burnouts way to much.lol
what is in the back of a raptor?? (if anyone knows)
BatteriesNotINCL you say the packs are useless, how lond did they last and do do lots of burnouts to kill them?? im looking at buying a posi (even one removed from an fx4) but i dont want to pay the $300 to install it if its almost worn out or will wear fast because i have 35's and love to do burnouts way to much.lol
what is in the back of a raptor?? (if anyone knows)
Hotshot
Joined: Sep 2010
Posts: 10,459
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From: RVA
You want the electronic locker and 4.10s that bad? Why not get new gears and a selectable locker from an aftermarket company?