Dana 60's Gear ratios?

[SteveRay]

How do you tell by looking at a Dana 60 what gears could be inside? I am doing 3000 RPM @ 55 MPH with 30" tires and it's getting on my nerves! My truck has had a later model leaf spring diff put in it. Can someone id this rear if I get some #'s off it?

 

[62gmc4x4]

i can't tell by looking. try jacking up the back end and turning the drive shaft and counting the tire rotation. that will give you a rough estimate.

 

[63Truck]

I'm willing to guess you have 4:11 rear or taller maybe 4:88s.... try this link http://www.4lo.com/ it will help confirm the gears......

1963 Chevy 4x4 1/2 ton
350/400/NP205/3.73
33X12.5X15 Fun Country