Which gears?
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Depending on the year, you could have several more ratios...
Basically, F150's can have a 3.08, 3.31, 3.55, 3.73, 4.10 gears in them.
If you are 'stop light racing', you want 4.10 or lower (4.56, etc...)
If you are 'dry lake bed racing', you want 3.08 or higher (2.xx, but don't think they make 'em, but there you go)
To find out what you have, check the code on the door jamb under AXLE and look up that code here and that's what you are running...
Mitch
Basically, F150's can have a 3.08, 3.31, 3.55, 3.73, 4.10 gears in them.
If you are 'stop light racing', you want 4.10 or lower (4.56, etc...)
If you are 'dry lake bed racing', you want 3.08 or higher (2.xx, but don't think they make 'em, but there you go)
To find out what you have, check the code on the door jamb under AXLE and look up that code here and that's what you are running...
Mitch