I'm sorry for posting this but I have searched a haven't found my answer. I have a 2006 Screw lariat 4x4 with the 5.4. I just installed a edge Evo and am wanting to know what gears I have so I can input it into the Evo. I know this has been asked a million times and I'm sorry but would really appreciate any info.

 

3.55 or 3.73 youd have to look at your axle code on the door

 

So I find the code on the door and then I can figure it out from there. I'm sure it dot say 4:55 or whatever it is right?

 

Mine was B6 which means 3:73 thanks for the help