85 F150 gear ratio

i wonderin if anybody knew the gear ratio on a 85 F150, the sticker that has it on there is gone so i cant tell. its completly stock rear end and geared low so i need a ring and pinion set for it

does it have a stick in it and does it have the tag on the rear end if it does take it in to a auto parts store and they can help you the sticker in the door jam still there if it is get the axle code and i can tell you what the rotio is

You can count teeth on the ring gear, then count teeth on pinion, then divide number of pinion teeth into ring gear teeth. This will give the ratio. Example, ring gear 54 teeth pinion 16 teeth
48 divided by 16 equals 3.50