guys i just put 35'' tall tires on my f150 and now the speedo is way off iknow u can change the speedo gears more teeth less teeth now the truck
Its a 92 f150 4x4 5speed 302 bw 1356 t case and 4:10 gears

 

Do you have the digital odometer or the analog one? If you have the analog one you can change the gears to correct your speedometer. If you have the digital like the '92 I am getting parts off of then you will have to program your PSOM.

 

cool thanks how do i change psom setings

 

might i suggest a haynes manual? kind of difficult to explain and im tired lol. ill post again in the morning if no one has answered it yet

 

I have looked in haynes. Nothing there. https://www.ford-trucks.com/article/...ND_BRONCO.html
This is an article that I see here a lot to reprogram the PSOM.