4.56 gear upgrade??
Member
Joined: Oct 2004
Posts: 45
Likes: 0
Originally Posted by garscott
To those that have researched or done the carbon fiber drive shaft, did/should it get rid of the clunk? A lot of F150 owners (including myself) keep getting their slip-yoke greased for the clunk, then it comes back the next day/week.
Thanks
Thanks
Oh I'd LOVE to get rid of "the clunk". I took mine into the dealership (while it was still under warranty of course) and they told me they replaced a worn gear race in the rear end, but they said the clunk is "normal". They swore. Normal.
Senior Member
Joined: Mar 2005
Posts: 133
Likes: 0
From: alhambra,ca
Im currently running 37's with a 6in lift and a 3in body lift..My next mod is my gears as they are much needed..as far as overall mpg goes, how much of a difference will these make on my mpg? will it be very noticeable or slightly noticeable? any help would be great. 
Originally Posted by acris24
Im currently running 37's with a 6in lift and a 3in body lift..My next mod is my gears as they are much needed..as far as overall mpg goes, how much of a difference will these make on my mpg? will it be very noticeable or slightly noticeable? any help would be great.
4.88 gears would improve your gas milage alot with those 37"s
Senior Member
Joined: Mar 2005
Posts: 133
Likes: 0
From: alhambra,ca
it hasn't been too bad, it is sluggish off the start..I do a lot of highway driving..Ive been running this setup for about 6 months now but i think its times for gears and a programmer as im hurting with mpg, currently im getting about 9-10mpg on dialy driving on the highway..Im hoping by doing these adjustments i can get my stock mpg back.any addidtioanl input would be great as far as what mods would help me in the mpg department 