ok this is a really dumb question but what edit gears do i have???
i dont have the blue book to my truck and i cant read the sticker under the hood, im confused. its a 93 w250 single cab longbed. if anyone might know or have a good guess please let me know! it will be much appreicated.

 

its 3.54 or 4.10s. Do you have a tach? What size are your tires?

 

it is an automatic and i do not have a tach, not yet. my tires are standard size just all-terrains, sorry for the lack of info!

 

You could jack the rear of the truck up and count how many the tires spin per driveshaft rotation or maybe its the other way around, someone else will chime in soon.

 

with an 727 nonoverdrive auto you should have 3.07. If you have a 518 overdrive you will have 3.54.

 

It's a 93- he'll have the 3.54 or 4.10 with the OD, unless he happens to have another fluke like that guy in Indiana.

Look on the rear diff cover- there should be a tag between two bolts on the cover. It will have the ratio, along with the Bill Of Materials number (important if you have to order parts.)

You can jack up one side and turn the tire one complete revolution and see how many times the yoke turns. If it is 4, you have 4.10s; if ~3-1/2, you have 3.54s. If the tire wont turn with tranny in neutral, you have a limited slip- and need to jack up the other side as well.

Daniel

 

thanks for all the help guys!!! ill give it a try!