FX4 package force 9.75 axle?
08-21-2018, 08:08 PM
#1
Senior Member
Thread Starter
FX4 package force 9.75 axle?
Just wondering - FX4 package has locking 3.31 as standard and can be ordered with 3.55 or 3.73 locking gears. I know the 3.73 gear forces the 9.75 axle BUT what I am wondering is does the FX4 package force the 9.75 axle vs. the 8.8 axle if equipped with 3.31 or 3.55 gear. -- This is for the 5.0 engine - I know the 3.5EB forces the 9.75 axle with any gear ratio.
Last edited by bsedwebt; 08-21-2018 at 08:11 PM.
08-21-2018, 08:29 PM
#2
Don't waste money on FXjoke4. The front springs and shocks are crap, and all you really get are cheap skids, a button and stickers. My last truck a 16 Lariat had the FX4 package and the ride was mushy, sloppy, nose dived at every stop, and now I have an 18 plat without FX4 and the ride is so much better, handles so much better, and doesn't try to dig a hole in the ground when stopping. If you want the 3.55 9.75 axles order it. Code is L9. Comes standard with Max Tow, but you have to buy it as a separate option on the V8.
08-21-2018, 09:01 PM
#4
Don't waste money on FXjoke4. The front springs and shocks are crap, and all you really get are cheap skids, a button and stickers. My last truck a 16 Lariat had the FX4 package and the ride was mushy, sloppy, nose dived at every stop, and now I have an 18 plat without FX4 and the ride is so much better, handles so much better, and doesn't try to dig a hole in the ground when stopping. If you want the 3.55 9.75 axles order it. Code is L9. Comes standard with Max Tow, but you have to buy it as a separate option on the V8.
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bsedwebt (08-21-2018)
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bsedwebt (08-21-2018)
08-21-2018, 09:54 PM
#7
Utility Guy
All 3.5L EcoBoost trucks without MaxTow and without 3.73 gears have an 8.8 axle.
If you want the 9.75 axle, the best way to get it is by finding (or ordering) a truck with the Max Tow Package with the 3.5L EcoBoost option. This gets you the L9 - 9.75 rear axle with 3.55 gears, the 36 gallon fuel tank, and a rest of the stuff that is in the standard tow package. All 3.5L EcoBoost trucks without MaxTow and without 3.73 gears have an 8.8 axle.
If you want a 5.0L Coyote V8, then you must order the 3.73 gears to get the L9 - 9.75 rear axle which includes e-locker.
FX4 only gets you a different set of front shocks, skid plates, e-locker, (cheap and thin) skid plates, hill descent control, and all terrain tires. All of which (except e-Locker) can be added to the truck in from the aftermarket and all of it factory equivelent or better quality. And if you get the 9.75" rear axle, you have the e-locker built in as a part of that rear differential automatically. I won't say not to get the FX4 package (as I have it on my truck and like it) but if you are into hard core off roading, it will not help you in the long run and these pieces will have to be replaced with heavier duty options.
All 3.5L EcoBoost trucks without MaxTow and without 3.73 gears have an 8.8 axle.
If you want the 9.75 axle, the best way to get it is by finding (or ordering) a truck with the Max Tow Package with the 3.5L EcoBoost option. This gets you the L9 - 9.75 rear axle with 3.55 gears, the 36 gallon fuel tank, and a rest of the stuff that is in the standard tow package. All 3.5L EcoBoost trucks without MaxTow and without 3.73 gears have an 8.8 axle.
If you want a 5.0L Coyote V8, then you must order the 3.73 gears to get the L9 - 9.75 rear axle which includes e-locker.
FX4 only gets you a different set of front shocks, skid plates, e-locker, (cheap and thin) skid plates, hill descent control, and all terrain tires. All of which (except e-Locker) can be added to the truck in from the aftermarket and all of it factory equivelent or better quality. And if you get the 9.75" rear axle, you have the e-locker built in as a part of that rear differential automatically. I won't say not to get the FX4 package (as I have it on my truck and like it) but if you are into hard core off roading, it will not help you in the long run and these pieces will have to be replaced with heavier duty options.
All 3.5L EcoBoost trucks without MaxTow and without 3.73 gears have an 8.8 axle.
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bsedwebt (08-21-2018)
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08-21-2018, 09:57 PM
#8
Senior Member
Thread Starter
The reason I ask this question is because I just ordered a 2019 SCAB, 5.0, 4x4, FX4, Lariat, 6.5' bed, 502A, 7050 GVWR, medium tow package, brake controller, technology package, adaptive cruise package, 36 gallon tank, 18" wheels, and 3.55 locker. I still have a bit of time to delete the FX4 package before it is too late but I really want the hill descent without using forscan. If FX4 forces a 9.75 I will remove it from my order as the increased payload with the lighter 8.8 axle is even more important. The ONLY reason for 3.55 gears vs. 3.73 was to get the 8.8 for better payload. I will also be removing the tow hooks, running boards and skid plates as soon as I get the truck to gain 80 more lbs payload.
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Munkeebutt (08-21-2018),
Ohsix (08-22-2018)
08-21-2018, 10:13 PM
#10
Senior Member
Thread Starter
F250 does not get the lane keep assist due to a different steering system - otherwise I would have it ordered instead. The F150 I have configured should come in at 1900lbs or better payload based on my research and end up at 2000lbs once I finish stripping off parts. I only need 1750lbs payload for what I am doing at this time but you never know when travelling what you may pick up along the way at the antique stores. My trailer is well within the tow specs of 9100lbs but when you add up the tongue weight, people, cargo, tow equipment, etc... I am at 1750lbs. Payload is always the weak spot when pulling a camper.