Axle questions

[Atom 8]

I am trying to find out what gears are in my Explorer and if it's a traction-lock or not. Axle code on the door is 45. The owners manual for my Ranger has a chart for this, but i couldn't find one in the Explorer manual. The metal tag on the rear end cover says to use synthetic gear oil too, if that helps. Thanks

 

[techieman33]

45 is 3.55 open. Is this for the v8 explorer? If so it's a pretty rare model as almost all of the v8's got 3.73's with limited slip.

 

[Atom 8]

Yeah, it's for my 2001 5.0 AWD. I was hoping it was 3.73. I think it turns about 2400 RPM's at 70 mph. with stock wheels and tires.