What does the FX4 package really include?

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May 25, 2009 | 02:17 PM

#16

Tylus

MMNC (SS)(Ret)

Joined: Mar 2004

Posts: 11,594

Likes: 144

From: SE Georgia

Quote:

Originally Posted by Rikster-7700

iwas going with either 4.10 or 4.56 as suggested by trylus, but not sure about how high my truck is going to rev with that deep of a gearset.
sorry off topic i know!

@ 4.56 gears, your motor will rev about 200-300 RPM higher on the highway at all speeds.

so pretty insignificant in my eyes for the performance gain

May 25, 2009 | 04:13 PM

#17

NASSTY

Cargo Master

Joined: Feb 2007

Posts: 2,474

Likes: 24

From: ME

Quote:

Originally Posted by air1jpg

My Truck has the 20" rims and has the 3.73LS rear end. Was this a rare?

Not really, my XLT came with 20's and 3:73 LS.

May 25, 2009 | 06:32 PM

#18

Rikster-7700

Fleet Mechanic

Joined: Aug 2006

Posts: 1,465

Likes: 17

From: Jacksonville, FL

Quote:

Originally Posted by tylus

@ 4.56 gears, your motor will rev about 200-300 RPM higher on the highway at all speeds.

so pretty insignificant in my eyes for the performance gain

oh i am more than sure i can live with that!! for sure!

May 25, 2009 | 06:46 PM

#19

broncobilly66

Senior User

Joined: Mar 2006

Posts: 148

Likes: 0

My 06 fx4 came with 20's and 3.73LS.. I thought 3.55 on fx4 was an option and 3.73ls was standard.. I've been wrong many times before. just ask my wife

May 16, 2016 | 12:32 PM

#20

Mtman1068

New User

Joined: May 2016

Posts: 1

Likes: 0

Way off topic

Quote:

Originally Posted by Rikster-7700

iwas going with either 4.10 or 4.56 as suggested by trylus, but not sure about how high my truck is going to rev with that deep of a gearset.
sorry off topic i know!

Speaking of going off topic. I have a 2015 f150 lariat crew with fx4 package. It has 20" tires and 3.55 rear end. And is a 145" wheelbase. I have a 34' travel trailer and it's all over the road even though my truck is rated to easily pull the weight and i use sway control bars with weight dist. hitch. Does anyone know how i can change things up to pull this camper (rear end, tires, is wheel base too short). I would hate to think i need to trade up to a 250 if i don't need too.

May 16, 2016 | 12:54 PM

#21

EBC-150

Senior User

Joined: Nov 2013

Posts: 124

Likes: 0

Quote:

Originally Posted by Mtman1068

Wrong section, but look into this system:
Roadmaster Active Suspension Kits | Helper Springs | Overload Springs

May 17, 2016 | 02:41 PM

#22

wrvond

Cargo Master

Joined: Oct 2015

Posts: 2,745

Likes: 72

From: West Virginia

Quote:

Originally Posted by Mtman1068

Off topic and nine years late.

First question is - what is the tongue weight of the TT?
Second question is - what is the weight of the TT?
If your tongue weight is less than 10% of the trailer's weight, it is going to be prone to sway. You may need to move some of the load from behind the trailer axels toward the front.
Next is tire pressure - ensure all tires are the correct type and size and that they are all inflated in accordance with the weight and capacities sticker (usually found on the outside of the camper, inside the main entrance door, or inside a kitchen cabinet).