If you don't mind me asking.
What was the total on your Yukon 4.56's and installation?

 

Hello all thank god got this forum !!
Can some help me please ?
I have a 2005 F150 5.4L 18" tires 4x4 supercrew. What I need to know is what the rear is a 3.5 or a 3.7 and this is what the tag says on the rear,
73 9 75 4M20 below that it has V956R.

Thank you for any helo you can give,
SSDD

 

If I go by the info I found on another forum my F150 has a F250 axle code of 26,

Can any one shead some light of this ?


Axle Codes (LS=Limited Slip / Traction Lok):

F-150:

19 – 3.55 Non-LS
18 – 3.08 Non-LS
H9 – 3.55 LS
B6 – 3.73 LS
F-250:

27 – 3.31 Non-LS
26 – 3.73 Non-LS

 

Are you sure it's not a B6? I just can't imagine why your F150 would have an F250 code on it.

 

called ford dealer today and gave them my vin# and they comfirmed that I have an F250 ,,26 – 3.73 Non-LS in my F150

 

Im going to be adding 305's onto mine. Would you guys suggest a swap? If so, to 4.10? , 4.56?

 

got a similar problem myself, not sure what ratio to go with. 08 stx 4.6l, cai, cortex programmer true dual exhaust. not gettin any gitup off the line or in my 40-50 mph range. turnin 3.55 gears, want more punch, just dont want to sacrifice too much top end. any ideas?