what gears

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Jan 14, 2007 | 03:38 PM

boss1984

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From: fairview heights,IL

what gears

hey does anyone know what gears are in my 2003 Boss f150 its a 12 bolt and what gears should i put in 3:73/4:10 its an auto 4 speed....thanx

Jan 14, 2007 | 05:03 PM

adrianspeeder

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From: Dover AFB DE / Harrisburg PA

12bolt is Chevy. You have a Sterling 9.75

Post your axle code on the door jam sticker or google "ford axle codes"

Adrianspeeder

Feb 3, 2007 | 03:17 AM

crash_lucky13

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From: off the path in Louisiana

ok, you have the 3.55 rear end. i know. same truck different year. i've about made up my mind to go with 4.10s, just to help me get down the track a little faster.

really depends on your mods

Feb 3, 2007 | 08:21 AM

adrianspeeder

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From: Dover AFB DE / Harrisburg PA

There were some options on gear choices. Only way to know for sure is from the axle code or by inspection.

Adrianspeeder

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