how does one tell what rear end gears they have is there an ez way to tell i have many years of ford trucks are they all the same way of telling

 

on the door tag there is a "axle" part along the bottom. Get the code and search it or post it up on here to find out the gearing. If there is a letter in the code then it is most likely limited slip.

 

jack the rear up off the ground, put the truck in neutral, disengage the parking brake and make sure the wheels are chocked. sit under the truck and turn the driveshaft so the tires turn. count about how many times it takes the driveshaft to turn to make 1 revolution of the tires. this will give you a rough indication, but usually close enough. if it goes about 3.5 times then you've got 3.55's. if about 4 times, you've got 4.10's. if almost 6 times then you've got 5.88's (extremely unlikely, but its an example)

-cutts-

 

thanks for the info on this i looked at the tag and 2 of them say 35 do you know what this means

 

Code.......................Man........Size........ GVW…..Gear Ratio, non Limited Slip
Axle code 35.............Ford......................6250....4 .10

4.10s, peg leg