Calculating Gear Ratio?

problem with that is mack uses a revers type gear number [meaning if you see a 6.36- it my be a 3.25 ]
just a set of numbers they are not acrit... they just fig difforently iv ben thier
thats if its a mack rear end -- all other are figurd the same pin into ring not ring into pin

 

nope thats fake news if its stamped 6.34s its 6.34 gears ive had several dms with those gears the other side to that story is the mack transmission in front of them will have a .60 top gear so its still a 60mph sherman tank