Gear Ratio on 1990 Bronco

[Pudnut]

I'm thinking of putting some 35" tires on my 1990 Ford Bronco Eddie Bauer Edition. So my question is this what is the gear ratio for this vehicle with a tow package. If someone could tell me or even point me to a site where I could find this information, I would be greatful.

Uncase anyone wants to know why I need this information...it's because I would need to recalibrate the stock speedometer and it would help if I had this information for calibrating it.

[mjgjr72]

probably 4.10, check metal tag on bolt of rear diff cover

[97chevyman]

you can change the speedo gear also to calibrate it. but to find your current ratio, it will be the first number on the bottom line. it will be like 3 73 for 3.73 gears or 3 l73 for limited slip 3.73 setup.

[ridge_runner]

i thought they had 3.55s

[J-Roc]

I'm leaning towards 3.55s. You'll want to regear your axle ratio to 4.56 or 4.88 depending on what trans you have. C6-4.56 AOD or E40D-4.88s, otherwise you'll be unhappy with the performance...