how do i identify a 5:29 diff ratio with it in the truck?

[hjalti_gto]

I got a hilux 92 with IFS and a 7.5" front diff. I need to identify if it has 5:29 diff ratio. How can i find that out without tearing it apart. if i turn the driveshaft it only turns the right front wheel. how many rotations do i have to count on a 5:29

 

[fourwd1]

Google is amazing, here's just one result that will help you.

 

[2ndGen4runner4x4]

With only one tire off the ground...
Mark the driveshaft and spin the tire two complete revolutions. Count the number of times the driveshaft rotates.